71M6543F-DB-CT

71M6543 Demo Board USER’S MANUAL Page: 1 of 91 v5 71M6543 Polyphase Energy Meter IC DEMO BOARD REV 4.0 and 5.0 USER’S MANUAL Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, Inc. 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000  2012 Maxim Integrated Products Page: 2 of 91 is a registered trademark of Maxim Integrated Products, Inc. v5 71M6543 Demo Board User’s Manual Table of Contents 1 GETTING STARTED................................................................................................................................................ 7 1.1 General .................................................................................................................................................................... 7 1.2 Safety and ESD Notes ............................................................................................................................................ 7 1.3 Demo Kit Contents ................................................................................................................................................. 8 1.4 Demo Board Versions ............................................................................................................................................ 8 1.5 Compatibility........................................................................................................................................................... 8 1.6 Suggested Equipment not Included ..................................................................................................................... 8 1.7 Demo Board Test Setup ......................................................................................................................................... 9 1.7.1 Power Supply Setup ........................................................................................................................................ 10 1.7.2 Cables for Serial Communication .................................................................................................................... 10 1.7.3 Checking Operation......................................................................................................................................... 11 1.7.4 Serial Connection Setup.................................................................................................................................. 11 1.8 Using the Demo Board ......................................................................................................................................... 12 1.8.1 Serial Command Language ............................................................................................................................. 13 1.8.2 Using the Demo Board for Energy Measurements .......................................................................................... 19 1.8.3 Adjusting the Kh Factor for the Demo Board ................................................................................................... 19 1.8.4 Adjusting the Demo Boards to Different SHUNT Resistors ............................................................................. 19 1.8.5 Using the Pre-Amplifier ................................................................................................................................... 19 1.8.6 Using Current Transformers (CTs) .................................................................................................................. 19 1.8.7 Adjusting the Demo Boards to Different Voltage Dividers ............................................................................... 19 1.9 Calibration Parameters ........................................................................................................................................ 20 1.9.1 General Calibration Procedure ........................................................................................................................ 20 1.9.2 Calibration Macro File ..................................................................................................................................... 21 1.9.3 Updating the Demo Code (hex file) ................................................................................................................. 21 1.9.4 Updating Calibration Data in Flash or EEPROM ............................................................................................. 21 1.9.5 Loading the Code for the 71M6543F into the Demo Board ............................................................................. 22 1.9.6 The Programming Interface of the 71M6543F ................................................................................................. 23 1.10 Demo Code ........................................................................................................................................................ 24 1.10.1 Demo Code Description ............................................................................................................................... 24 1.10.2 Demo Code Versions................................................................................................................................... 24 1.10.3 Important MPU Addresses ........................................................................................................................... 24 1.10.4 LSB Values in CE Registers ........................................................................................................................ 31 1.10.5 Calculating IMAX and Kh ............................................................................................................................. 31 1.10.6 Determining the Type of 71M6x0x ............................................................................................................... 32 1.10.7 Communicating with the 71M6X0x .............................................................................................................. 33 1.10.8 Bootloader Feature ...................................................................................................................................... 33 2 APPLICATION INFORMATION ............................................................................................................................. 35 2.1 Calibration Theory ................................................................................................................................................ 35 2.1.1 Calibration with Three Measurements ............................................................................................................. 35 2.1.2 Calibration with Five Measurements ............................................................................................................... 37 2.2 Calibration Procedures ........................................................................................................................................ 38 2.2.1 Calibration Equipment ..................................................................................................................................... 38 2.2.2 Detailed Calibration Procedures ...................................................................................................................... 38 2.2.3 Calibration Procedure with Three Measurements ........................................................................................... 39 2.2.4 Calibration Procedure with Five Measurements .............................................................................................. 40 2.2.5 Calibration Spreadsheets ................................................................................................................................ 40 2.2.6 Compensating for Non-Linearities ................................................................................................................... 42 2.3 Temperature Compensation ................................................................................................................................ 43 2.3.1 Error Sources .................................................................................................................................................. 43 2.3.2 Software Features for Temperature Compensation ........................................................................................ 44 2.3.3 Calculating Parameters for Compensation ...................................................................................................... 45 2.4 Testing the Demo Board ...................................................................................................................................... 48 Page: 3 of 91 v5 71M6543 Demo Board User’s Manual Functional Meter Test...................................................................................................................................... 48 2.4.1 2.4.2 EMC Test ........................................................................................................................................................ 50 2.5 Sensors and Sensor Placement .......................................................................................................................... 50 2.5.1 Self-Heating .................................................................................................................................................... 51 2.5.2 Placement of Sensors (ANSI) ......................................................................................................................... 51 2.5.3 Placement of Sensors (IEC) ............................................................................................................................ 51 2.5.4 Other Techniques for Avoiding Magnetic Crosstalk......................................................................................... 52 3 HARDWARE DESCRIPTION................................................................................................................................. 55 3.1 71M6543 REV 4.0 Demo Board Description: Jumpers, Switches and Test Points ......................................... 55 3.2 71M6543 REV 5.0 Demo Board Description ....................................................................................................... 59 3.3 Board Hardware Specifications .......................................................................................................................... 60 4 APPENDIX ............................................................................................................................................................. 61 4.1 71M6543 Demo Board Rev 4.0 Electrical Schematic ......................................................................................... 62 4.2 71M6543 Demo Board Rev 5.0 Electrical Schematic ......................................................................................... 66 4.3 Comments on Schematics................................................................................................................................... 70 4.3.1 General ........................................................................................................................................................... 70 4.3.2 Using Ferrites in the Shunt Sensor Inputs ....................................................................................................... 70 4.4 71M6543 Demo Board REV 4.0 Bill of Material .................................................................................................. 71 4.5 71M6543 Demo Board REV 5.0 Bill of Material .................................................................................................. 73 4.6 71M6543 REV 4.0 Demo Board PCB Layout....................................................................................................... 75 4.7 71M6543 REV 5.0 Demo Board PCB Layout....................................................................................................... 79 4.8 Debug Board Bill of Material ............................................................................................................................... 83 4.9 Debug Board Schematics .................................................................................................................................... 84 4.10 Optional Debug Board PCB Layout................................................................................................................. 85 4.11 71M6543 Pin-Out Information .......................................................................................................................... 88 4.12 Revision History ............................................................................................................................................... 91 List of Figures Figure 1-1: Teridian 71M6543 REV4.0 Demo Board with Debug Board: Basic Connections .............................................. 9 Figure 1-2: HyperTerminal Sample Window with Disconnect Button (Arrow) ................................................................... 12 Figure 1-3: Port Speed and Handshake Setup (left) and Port Bit setup (right) .................................................................. 12 Figure 1-4: Typical Calibration Macro File ......................................................................................................................... 21 Figure 1-5: Emulator Window Showing Reset and Erase Buttons (see Arrows) ............................................................... 22 Figure 1-6: Emulator Window Showing Erased Flash Memory and File Load Menu......................................................... 23 Figure 1-7: Worksheet from Calibration Spreadsheets REV 6.0 ....................................................................................... 32 Figure 2-1: Watt Meter with Gain and Phase Errors.......................................................................................................... 35 Figure 2-2: Phase Angle Definitions .................................................................................................................................. 39 Figure 2-3: Calibration Spreadsheet for Three Measurements ......................................................................................... 41 Figure 2-4: Calibration Spreadsheet for Five Measurements ............................................................................................ 42 Figure 2-5: Non-Linearity Caused by Quantification Noise ............................................................................................... 42 Figure 2-6: Wh Registration Error with VREF Compensation ........................................................................................... 47 Figure 2-7: Wh Registration Error with Combined Compensation ..................................................................................... 48 Figure 2-8: Meter with Calibration System ........................................................................................................................ 49 Figure 2-9: Calibration System Screen ............................................................................................................................. 49 Figure 2-10: Wh Load Lines at Room Temperature with 150 µΩ Shunts .......................................................................... 50 Figure 2-11: VARh Load Lines at Room Temperature with 150 µΩ Shunts ...................................................................... 50 Figure 2-12: Typical Sensor Arrangement (left), Alternative Arrangement (right) ............................................................. 52 Figure 2-13: Swiveled Sensor Arrangement ..................................................................................................................... 52 Figure 2-17: Loop Formed by Shunt and Sensor Wire ...................................................................................................... 53 Figure 2-18: Shunt with Compensation Loop .................................................................................................................... 53 Figure 2-19: Shunt with Center Drill Holes ........................................................................................................................ 53 Figure 3-1: 71M6543 REV 4.0 Demo Board - Board Description ...................................................................................... 58 Page: 4 of 91 v5 71M6543 Demo Board User’s Manual Figure 3-2: 71M6543 REV 5.0 Demo Board – Top View................................................................................................... 59 Figure 4-1: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 1/4 ............................................................... 62 Figure 4-2: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 2/4 ............................................................... 63 Figure 4-3: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 3/4 ............................................................... 64 Figure 4-4: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 4/4 ............................................................... 65 Figure 4-5: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 1/4 ............................................................... 66 Figure 4-6: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 2/4 ............................................................... 67 Figure 4-7: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 3/4 ............................................................... 68 Figure 4-8: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 4/4 ............................................................... 69 Figure 4-9: Input Circuit with Ferrites ................................................................................................................................ 70 Figure 4-10: Teridian 71M6543 REV 4.0 Demo Board: Top View ..................................................................................... 75 Figure 4-11: Teridian 71M6543 REV 4.0 Demo Board: Top Copper ................................................................................. 76 Figure 4-12: Teridian 71M6543 REV 4.0 Demo Board: Bottom View................................................................................ 77 Figure 4-13: Teridian 71M6543 REV 4.0 Demo Board: Bottom Copper............................................................................ 78 Figure 4-14: Teridian 71M6543 REV 5.0 Demo Board: Top View ..................................................................................... 79 Figure 4-15: Teridian 71M6543 REV 5.0 Demo Board: Top Copper ................................................................................. 80 Figure 4-16: Teridian 71M6543 REV 5.0 Demo Board: Bottom View................................................................................ 81 Figure 4-17: Teridian 71M6543 REV 5.0 Demo Board: Bottom Copper............................................................................ 82 Figure 4-18: Debug Board: Electrical Schematic............................................................................................................... 84 Figure 4-19: Debug Board: Top View ................................................................................................................................ 85 Figure 4-20: Debug Board: Bottom View........................................................................................................................... 85 Figure 4-21: Debug Board: Top Signal Layer .................................................................................................................... 86 Figure 4-22: Debug Board: Middle Layer 1 (Ground Plane) .............................................................................................. 86 Figure 4-23: Debug Board: Middle Layer 2 (Supply Plane) ............................................................................................... 87 Figure 4-24: Debug Board: Bottom Trace Layer ............................................................................................................... 87 Figure 4-25: 71M6543, LQFP100: Pin-out (top view) ........................................................................................................ 90 List of Tables Table 1-1: Jumper Settings on Debug Board .................................................................................................................... 10 Table 1-2: Straight Cable Connections ............................................................................................................................. 10 Table 1-3: Null-modem Cable Connections ...................................................................................................................... 10 Table 1-4: CE RAM Locations for Calibration Constants .................................................................................................. 21 Table 1-5: Flash Programming Interface Signals .............................................................................................................. 23 Table 1-6: Demo Code Versions ....................................................................................................................................... 24 Table 1-7: MPU XRAM Locations ..................................................................................................................................... 25 Table 1-8: Bits in the MPU Status Word............................................................................................................................ 30 Table 1-9: CE Registers and Associated LSB Values ....................................................................................................... 31 Table 1-10: IMAX for Various Shunt Resistance Values and Remote Sensor Types........................................................ 31 Table 1-11: Identification of 71M6x0x Remote Sensor Types ........................................................................................... 33 Table 2-1: Temperature-Related Error Sources ................................................................................................................ 44 Table 2-2: MPU Registers for Temperature-Compensation .............................................................................................. 45 Table 2-3: Temperature-Related Error Sources ................................................................................................................ 46 Table 3-1: 71M6543 REV 4.0 Demo Board Description .................................................................................................... 55 Table 4-1: 71M6543 REV 4.0 Demo Board: Bill of Material (1/2) ...................................................................................... 71 Table 4-2: 71M6543 REV 4.0 Demo Board: Bill of Material (2/2) ...................................................................................... 72 Table 4-3: 71M6543 REV 5.0 Demo Board: Bill of Material (1/3) ...................................................................................... 73 Table 4-4: 71M6543 REV 5.0 Demo Board: Bill of Material (2/3) ...................................................................................... 74 Table 4-5: Debug Board: Bill of Material ........................................................................................................................... 83 Table 4-6: 71M6543 Pin Description Table 1/3 ................................................................................................................. 88 Table 4-7: 71M6543 Pin Description Table 2/3 ................................................................................................................. 88 Table 4-8: 71M6543 Pin Description Table 3/3 ................................................................................................................. 89 Page: 5 of 91 v5 71M6543 Demo Board User’s Manual Page: 6 of 91 v5 71M6543 Demo Board User’s Manual 1 1 GETTING STARTED 1.1 GENERAL The Teridian™ 71M6543 REV 4.0 and REV 5.0 Demo Boards are demonstration boards for evaluating the 71M6543F device for polyphase electronic power metering applications in conjunction with the Remote Sensor Interface or CT sensors. The Demo Boards allow the evaluation of the 71M6543F energy meter chip for measurement accuracy and overall system use. The 71M6543 REV 4.0 Demo Board incorporates a 71M6543F integrated circuit, three 71M6103 or 71M6203 Remote Interface ICs, peripheral circuitry such as a serial EEPROM, emulator port, and on-board power supply, as well as a USB interface for serial communication with a PC. The 71M6543 REV 5.0 Demo Board is optimized and prepared for the connection of external CTs and is otherwise identical to the REV 4.0 Demo Board. All Demo Boards are pre-programmed with a Demo Program (Demo Code) in the FLASH memory of the 71M6543F IC. This embedded application is developed to exercise all low-level function calls to directly manage the peripherals, flash programming, and CPU (clock, timing, power savings, etc.). The 71M6543F IC on the REV 4.0 Demo Board is pre-programmed and pre-calibrated for the 50 µΩ or 120 µΩ shunts shipped with the board. The Demo Board may also be used for operation with a CT after hardware modifications that can be performed by the user. This configuration will require a different version of the Demo Code and different settings. It should be noted that the 71M6543 performs better with CTs when used with the 71M6543 REV 5.0 Demo Board. 1.2 SAFETY AND ESD NOTES Connecting live voltages to the demo board system will result in potentially hazardous voltages on the demo board. THE DEMO SYSTEM IS ESD SENSITIVE! ESD PRECAUTIONS SHOULD BE TAKEN WHEN HANDLING THE DEMO BOARD! EXTREME CAUTION SHOULD BE TAKEN WHEN HANDLING THE DEMO BOARD ONCE IT IS CONNECTED TO LIVE VOLTAGES! BOARD GROUND IS CLOSE TO LIVE VOLTAGE! Teridian is a trademark of Maxim Integrated Products, Inc. Page: 7 of 91 v5 71M6543 Demo Board User’s Manual 1.3 DEMO KIT CONTENTS • • • • • • 1.4 71M6543 Demo Board REV 4.0 with three 71M6203 or 71M6103 ICs and one 71M6543F IC with preloaded demo program, or 71M6543 Demo Board REV 5.0 with inputs configured for CTs. 5VDC/1,000mA universal wall transformer with 2.5mm plug (Switchcraft 712A compatible) USB Interface Module (USB/Serial Adapter) USB cable ANSI base with three 50 μΩ shunt resistors, Oswell P/N EBSB20050H-92-19-73-6.4-V1 (optional, for ANSI kits only) Three 120 μΩ shunt resistors, Oswell P/N EBSA15120-32-14.8-21-6.2-V1 (optional, for IEC kits) DEMO BOARD VERSIONS The following versions of the Demo Board are or have been available: • • • • • 71M6543 Demo Board Rev 1.0 (CTs only) - discontinued 71M6543 Demo Board Rev 2.0 (CTs or 71M6103 Remote Sensor Interface ICs on daughter boards) discontinued 71M6543 Demo Board Rev 3.0 (71M6103 Remote Sensor Interface ICs) - discontinued 71M6543 Demo Board Rev 4.0 (71M6103 Remote Sensor Interface ICs) 71M6543 Demo Board Rev 5.0 (CTs or 71M6103 Remote Sensor Interface ICs This manual applies to 71M6543 Rev 4.0 and Rev 5.0 only. For the earlier Demo Board revisions please see their respective manuals. 1.5 COMPATIBILITY This manual applies to the following hardware and software revisions: • • • 1.6 71M6543F IC revision B02. Demo Code revision 5.4F or later 71M6543 Demo Board Rev 4.0 or Rev. 5.0 SUGGESTED EQUIPMENT NOT INCLUDED For functional demonstration: PC with Microsoft Windows versions Windows XP, ME, or 2000, equipped with RS-232 port (COM port) via DB9 connector For software development (MPU code): Signum ICE (In Circuit Emulator): ADM-51 www.signum.com Signum WEMU51 version 3.11.09 or later should be used. Using a USB isolator between PC and the Signum ADM-51 is strongly recommended Keil 8051 “C” Compiler kit: CA51 www.keil.com/c51/ca51kit.htm, www.keil.com/product/sales.htm Windows and Windows XP are registered trademarks of Microsoft Corp. Page: 8 of 91 v5 71M6543 Demo Board User’s Manual 1.7 DEMO BOARD TEST SETUP Figure 1-1 shows the basic connections of the Demo Board REV 4.0 plus optional Debug Board with the external equipment. The PC should be connected via the USB Interface (CN1). Communication can also be established via the optional Debug Board, but this board is not part of the Demo Kit. For stand-alone testing (without AC voltage) the Demo Board maybe powered via the 5.0 VDC input (J20). The optional Debug Board must be powered with its own 5 VDC power supply. DEMONSTRATION METER External Shunt Resistors 6543 Single Chip Meter 71M6103 or 71M6203 Remote Sensor Interfaces and isolation transformers PULSE OUTPUTS SEGDIO0/WPULSE IBP IA SEGDIO1/VPULSE IBN SEGDIO6/XPULSE ICP SEGDIO7/YPULSE IB ICN IDP IC IDN IAP INEUTRAL IAN V3P3A V3P3SYS VC VB VA SDCK SDATA Wh V3P3SYS VARh V3P3SYS PULSE A PULSE B J1 3.3V or 5V LCD EEPROM SPI Connector J19 ICE Connector J14 VA VB VC 3.3V DC Input JP6 SMPS J20 NEUTRAL J21 MPU HEARTBEAT (5Hz) 1 SEGDIO52 GND Battery 2 (optional) SW4 3 OPTO PB J12 Battery 1 (optional) JP56 RESET PB RESET OPTO TMUX2OUT V3P3D 6 DB9 to PC COM Port OPTO RTM INTERFACE GND 5, 7, 9, 11 8 GND_DBG V5_DBG RS-232 INTERFACE 12 RX TMUXOUT VBAT JP53 10 TX SEGDIO53 VBAT_RTC CE HEARTBEAT (1Hz) V5_DBG OPTO V3P3 J13 V5_DBG OPTO 2 SEGDIO10 GND DEBUG BOARD (OPTIONAL) J5 OPTO 6 FPGA 68 Pin Connector OPTO 4 V5_DBG On-board components powered by V3P3D 15, 16 13, 14 GND_DBG JP5 CN1 Isolated RS232 transceiver V5_NI 5V DC JP21 2/4/2011 USB Interface To PC Figure 1-1: Teridian 71M6543 REV4.0 Demo Board with Debug Board: Basic Connections The Demo Board contains all circuits necessary for operation as a meter, including display, calibration LEDs, and internal power supply. The optional Debug Board uses a separate power supply, and is optically isolated from the Demo Board. It interfaces to a PC through a 9 pin serial port connector. It is recommended to set up the demo board with no live AC voltage connected, and to connect live AC voltages only after the user is familiar with the demo system. All input signals are referenced to the V3P3A (3.3V power supply to the chip). Page: 9 of 91 v5 71M6543 Demo Board User’s Manual 1.7.1 POWER SUPPLY SETUP There are several choices for the meter power supply: o o Internal (using the AC line voltage). The internal power supply is only suitable when the voltage exceeds 100V RMS. To enable the internal supply, a jumper needs to be installed across JP6 on the top of the board. External 5.0 VDC connector (JP20) on the Demo Board. 1.7.2 CABLES FOR SERIAL COMMUNICATION It is recommended to use the USB connection to communicate with the Demo Code. The optional Debug Board is not normally shipped with the Demo Kit and requires a serial port (DB9) on the PC along with a separate power supply. 1.7.2.1 USB Connection A standard USB cable can be used to connect the Demo Board to a PC running HyperTerminal or a similar serial interface program. A suitable driver, e.g. the FTDI CDM Driver Package, must be installed on the PC to enable the USB port to be mapped as a virtual COM port. The driver can be found on the FTDI web site (http://www.ftdichip.com/Drivers/D2XX.htm). See Table 3-1 for correct placement of jumper JP5 depending on whether the USB connection or the serial connection via the optional Debug Board is used. 1.7.2.2 Serial Connection (Optional) For connection of the DB9 serial port of the Debug Board to a PC serial port (COM port), either a straight or a so-called “null-modem” cable may be used. JP1 and JP2 are plugged in for the straight cable, and JP3/JP4 are empty. The jumper configuration is reversed for the null-modem cable, as shown in Table 1-1. Jumpers on Debug Board Cable Configuration Mode JP1 JP2 JP3 JP4 Straight Cable Default Installed Installed -- -- Null-Modem Cable Alternative -- -- Installed Installed Table 1-1: Jumper Settings on Debug Board JP1 through JP4 can also be used to alter the connection when the PC is not configured as a DCE device. Table 1-2 shows the connections necessary for the straight DB9 cable and the pin definitions. PC Pin Function Demo Board Pin 2 TX 2 3 RX 3 5 Signal Ground 5 Table 1-2: Straight Cable Connections Table 1-3 shows the connections necessary for the null-modem DB9 cable and the pin definitions. PC Pin Function Demo Board Pin 2 TX 3 3 RX 2 5 Signal Ground 5 Table 1-3: Null-modem Cable Connections See Table 3-1 for correct placement of jumper JP5 on the Demo Board depending on whether the USB connection or the serial connection via the Debug Board is used. Page: 10 of 91 v5 71M6543 Demo Board User’s Manual 1.7.3 CHECKING OPERATION A few seconds after power up, the LCD display on the Demo Board should display a brief greeting in the top row and the demo code revision in the bottom row: H 5. E 4 L F L O The “HELLO” message should be followed by the display of accumulated energy: 0 3 0. 0 0 Wh SYS The “SYS” symbol will be blinking, indicating activity of the MPU inside the 71M6543. In general, the fields of the LCD are used as shown below: Measured value Command number (Phase) Unit 1.7.4 SERIAL CONNECTION SETUP After connecting the USB cable from the Demo Board to the PC, or after connecting the serial cable from the optional Debug Board to the PC, start the HyperTerminal application and create a session using the following parameters: Port Speed: 9600 bd Data Bits: 8 Parity: None Stop Bits: 1 Flow Control: XON/XOFF When using the USB connection, you may have to define a new port in HyperTerminal after selecting File  Properties and then clicking on the “Connect Using“ dialog box. If the USB-to-serial driver is installed (see section 1.7.2.1) a port with a number not corresponding to an actual serial port, e.g. COM27, will appear in the dialog box. This port should be selected for the USB connection. HyperTerminal can be found by selecting Programs Accessories  Communications from the Windows start menu. The connection parameters are configured by selecting File  Properties and then by pressing the Configure button. Port speed and flow control are configured under the General tab (Figure 1-3, left), bit settings are configured by pressing the Configure button (Figure 1-3, right), as shown below. A setup file (file name “Demo Board Connection.ht”) for HyperTerminal that can be loaded with File  Open is also provided with the tools and utilities. In Windows 7 , HyperTerminal is not available, but can be installed from various resources on the Internet. Port parameters can only be adjusted when the connection is not active. The disconnect button, as shown in Figure 1-2 must be clicked in order to disconnect the port. Page: 11 of 91 v5 71M6543 Demo Board User’s Manual Figure 1-2: HyperTerminal Sample Window with Disconnect Button (Arrow) Figure 1-3: Port Setup (left) and Port Speed and Handshake Setup (right) Once, the connection to the demo board is established, press and the command prompt, >, should appear. Type >? to see the Demo Code help menu. Type >i to verify the demo code revision. 1.8 USING THE DEMO BOARD The 71M6543 Demo Board is a ready-to-use meter prepared for use with external shunt resistors. Demo Code versions for polyphase operation (EQU 5) are available on the Maxim web site (www.maximic.com) and the 71M6543F is pre-programmed with Demo Code that supports polyphase metering. Using the Demo Board involves communicating with the Demo Code via the command line interface (CLI). The CLI allows all sorts of manipulations to the metering parameters, access to the EEPROM, selection of the displayed parameters, changing calibration factors and many more operations. Before evaluating the 71M6543F on the Demo Board, users should get familiar with the commands and responses of the CLI. A complete description of the CLI is provided in section 1.8.1. Page: 12 of 91 v5 71M6543 Demo Board User’s Manual 1.8.1 SERIAL COMMAND LANGUAGE The Demo Code residing in the flash memory of the 71M6543F provides a convenient way of examining and modifying key meter parameters via its command line interface (CLI). The tables in this chapter describe the commands in detail. Commands for CE Data Access: ] CE DATA ACCESS Description: Allows user to read from and write to CE data space. Usage: ] [Starting CE Data Address] [option]…[option] Command combinations: ]A??? Read consecutive 16-bit words in Decimal, starting at address A ]A$$$ Read consecutive 16-bit words in Hex, starting at address A ]A=n=n Write consecutive memory values, starting at address A ]U Update default version of CE Data in flash memory ]40$$$ Reads CE data words 0x40, 0x41 and 0x42. ]7E=12345678=9876ABCD Writes two words starting @ 0x7E Example: Comment All CE data words are in 4-byte (32-bit) format. Typing ]A? will access the 32-bit word located at the byte address 0x0000 + 4 * A = 0x1028. Commands for MPU/XDATA Access: ) MPU DATA ACCESS Description: Allows user to read from and write to MPU data space. Usage: ) [Starting MPU Data Address] [option]…[option] Command combinations: )A??? Read three consecutive 32-bit words in Decimal, starting at address A )A$$$ Read three consecutive 32-bit words in Hex, starting at address A )A=n=m Write the values n and m to two consecutive addresses starting at address A ?) Display useful RAM addresses. )08$$$$ Reads data words 0x08, 0x0C, 0x10, 0x14 )04=12345678=9876ABCD Writes two words starting @ 0x04 Example: Comment MPU or XDATA space is the address range for the MPU XRAM (0x0000 to 0xFFF). All MPU data words are in 4-byte (32-bit) format. Typing ]A? will access the 32-bit word located at the byte address 4 * A = 0x28. The energy accumulation registers of the Demo Code can be accessed by typing two Dollar signs (“$$”), typing question marks will display negative decimal values if the most significant bit is set. Page: 13 of 91 v5 71M6543 Demo Board User’s Manual Commands for DIO RAM (Configuration RAM) and SFR Control: R DIO AND SFR CONTROL Description: Allows the user to read from and write to DIO RAM and special function registers (SFRs). Usage: R [option] [register] … [option] Command combinations: RIx… Select I/O RAM location x (0x2000 offset is automatically added) Rx… Select internal SFR at address x Ra???... Read consecutive SFR registers in Decimal, starting at address a Ra$$$... Read consecutive registers in Hex, starting at address a Ra=n=m… Set values of consecutive registers to n and m starting at address a RI2$$$ Read DIO RAM registers 2, 3, and 4 in Hex. Example: Comment The SFRs (special function registers) are located in internal RAM of the 80515 core, starting at address 0x80. Commands for EEPROM Control: EE EEPROM CONTROL Description: Allows user to enable read from and write to EEPROM. Usage: EE [option] [arguments] Command combinations: EECn EEPROM Access (1  Enable, 0  Disable) EERa.b Read EEPROM at address 'a' for 'b' bytes. EESabc..xyz Write characters to buffer (sets Write length) EETa Transmit buffer to EEPROM at address 'a'. EEWa.b...z Write values to buffer CLS Saves calibration to EEPROM EEShello EET$0210 Writes 'hello' to buffer, then transmits buffer to EEPROM starting at address 0x210. Example: Comment Due to buffer size restrictions, the maximum number of bytes handled by the EEPROM command is 0x40. Commands for Flash Memory Control: F FLASH CONTROL Description: Allows user to enable read from and write to Flash memory. Usage: F [option] [arguments] Command combinations: FRa.b Read Flash at address 'a' for 'b' bytes. FSabc..xyz Write characters to buffer (sets Write length) FTa Transmit buffer to Flash memory at address 'a'. FWa.b...z Write string of bytes to buffer FShello FT$FE10 Writes 'hello' to buffer, then transmits buffer to EEPROM starting at address 0xFE10. Example: Page: 14 of 91 Comment v5 71M6543 Demo Board User’s Manual Auxiliary Commands: Typing a comma (“,”) repeats the command issued from the previous command line. This is very helpful when examining the value at a certain address over time, such as the CE DRAM address for the temperature (0x40). The slash (“/”) is useful to separate comments from commands when sending macro text files via the serial interface. All characters in a line after the slash are ignored. Commands controlling the CE, TMUX and the RTM: C COMPUTE ENGINE, MEMORY, AND CALIBRATION CONTROL Description: Allows the user to enable and configure the compute engine, store and recall configurations, and initiate calibration. Usage: C [option] [argument] Command combinations: CEn Compute Engine Enable (1  Enable, 0  Disable) CTn.m Selects the signal for the TMUX output pins (n = 1 for TMUXOUT, n = 2 for TMUX2OUT). M is interpreted as a hex number. CREn RTM output control (1  Enable, 0  Disable) CRSa.b.c.d Selects CE addresses for RTM output CLS Stores calibration and other settings to EEPROM. CLR Restores calibration and other settings from EEPROM. CLD Restores calibration and other settings to defaults. CLB Start auto-calibration based on voltage (MPU address 0x0C, current (MPU 0x0D), and duration (MPU 0x0E) in seconds. CLC Apply machine-readable calibration control (Intel HexRecords). CPA Start the accumulating periodic pulse counters. CPC Clear the pulse counters CPDn Activate pulse counters for n seconds CE0 Disables CE, (“SYS will stop blinking on the LCD). CT1.12 Selects the VBIAS signal for the TMUXOUT pin Example: Comment Commands for Identification and Information: I INFORMATION MESSAGES Comment Description: Allows the user to read information messages. Usage: I Sends complete demo code version information on serial interface. M0 Displays meter ID on LCD. The I command is mainly used to identify the revisions of Demo Code and the contained CE code. Page: 15 of 91 v5 71M6543 Demo Board User’s Manual Commands for Battery Mode Control and Battery Test: B INFORMATION MESSAGES Comment Description: Allows the user to control battery modes and to test the battery. Usage: BL Enters LCD mode when in brownout mode (B> prompt). BS Enters sleep mode when in brownout mode (B> prompt). BT Starts a battery test – when in mission mode (> prompt). BWSn Set wake timer to n seconds for automatic return to brownout mode. BWMn Set wake timer to n minutes for automatic return to brownout mode. Commands for Controlling the RTC: RT REAL TIME CLOCK CONTROL Description: Allows the user to read and set the real time clock. Usage: RT [option] [value] … [value] Command combinations: RTDy.m.d.w: Day of week (Year, month, day, weekday [1 = Sunday]). If the weekday is omitted it is set automatically. RTR Read Real Time Clock. RTTh.m.s Time of day: (hr, min, sec). RTAs.t Real Time Adjust: (start, trim). Allows trimming of the RTC. If s > 0, the speed of the clock will be adjusted by ‘t’ parts per billion (PPB). If the CE is on, the value entered with 't' will be changing with temperature, based on Y_CAL, Y_CALC and Y_CALC2. > Access look-up table for RTC compensation. RTD05.03.17.5 Programs the RTC to Thursday, 3/17/2005 RTA1.+1234 Speeds up the RTC by 1234 PPB. >0???? Read the first four bytes in the look-up table. Example: Comment The “Military Time Format” is used for the RTC, i.e. 15:00 is 3:00 PM. Commands for Accessing the Trim Control Registers: T TRIM CONTROL Description: Allows user to read trim and fuse values. Usage: T [option] Command combinations: T4 Read fuse 4 (TRIMM). T5 Read fuse 5 (TRIMBGA) T6 Read fuse 6 (TRIMBGB). T4 Reads the TRIMM fuse. Example: Comment These commands are only accessible for the 71M6543H (0.1%) parts. When used on a 71M6543F (0.5%) part, the results will be displayed as zero. Page: 16 of 91 v5 71M6543 Demo Board User’s Manual Reset Commands: W RESET Description: Watchdog control Usage: W Comment Halts the Demo Code program, thus suppressing the triggering of the hardware watchdog timer. This will cause a reset, if the watchdog timer is enabled. Commands for the 71M6x0x Remote Sensor Interface: 6 71M6x0x Interface Description: Commands for control of the Remote Sensor Interface IC. Usage: 6En Remote sensor Enable (1  Enable, 0  Disable) 6Ra.b Read Remote Sensor IC number a with command b. Page: 17 of 91 Comment 6Ca.b Write command b to Remote Sensor IC number a. 6Ta.b Send command b to Remote Sensor IC number a in a loop forever. 6T Send temp command to 6000 number 2 in a loop forever. 6R1.20 Reads the temperature from Remote Sensor IC number 1. See section 1.10.7 for information on how to interpret the temperature data. v5 71M6543 Demo Board User’s Manual Commands for Controlling the Metering Values Shown on the LCD Display: Step Text or Numerical Display CLI command 0 10000 00 M0 Meter ID 1 24.5 °C 01 M1 Temperature difference from calibration temperature. Displayed in 0.1°C 2 59.9 02 M2 Frequency at the VA_IN input [Hz] 3 3.27 Wh 03 M3 Accumulated imported real energy [Wh]. The default display setting after power-up or reset. M4 Accumulated exported real energy [Wh]. M5 Accumulated reactive energy [VARh]. M6 Accumulated exported reactive energy [VARh]. M7 Accumulated apparent energy [VAh]. M8 Elapsed time since last reset or power up. M9 Time of day (hh.mm.ss) M10 Date (yy.mm.dd) 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 1.04 Wh 04 2.21 VARh 05 0.95 VARh 06 4.11 VAh 07 0.7 h 08 01:43:59 09 01.01.01 10 0.62 11 1 0 120 13 48 14 29.98 A 29.91 A 30.02 A 240.27 V 239.43 V 240.04 V 3.34 V 17 241.34 W 240.92 W 241.01 W 50400 W 19 88.88.88 88.88.88 88.88.88 Displayed Parameter(s) M11.P Power factor (P = phase) M12 Not used in the 71M6543 M13 Zero crossings of the mains voltage M14 Duration of sag or neutral current [s] M15 RMS current (P = phase). “M15.4” displays the neutral current. M16 RMS voltage M17 Battery voltage M18 Momentary power in W (P = phase) M19 Demand M20 LCD Test Displays for total consumption wrap around at 999.999Wh (or VARh, VAh) due to the limited number of available display digits. Internal registers (counters) of the Demo Code are 64 bits wide and do not wrap around. Page: 18 of 91 v5 71M6543 Demo Board User’s Manual 1.8.2 USING THE DEMO BOARD FOR ENERGY MEASUREMENTS The 71M6543 Demo Board was designed for use with shunt resistors connected via the Remote Sensor Interfaces and it is shipped in this configuration. The Demo Board may immediately be used with 50 µΩ shunt resistors (ANSI version) or 120 µΩ shunt resistors (IEC version). It is programmed for a kh factor of 3.2 (see Section 1.8.4 for adjusting the Demo Board for shunts with different resistance). Once, voltage is applied and load current is flowing, the red LED D5 will flash each time an energy sum of 3.2 Wh is collected. The LCD display will show the accumulated energy in Wh when set to display mode 3 (command >M3 via the serial interface). Similarly, the red LED D6 will flash each time an energy sum of 3.2 VARh is collected. The LCD display will show the accumulated energy in VARh when set to display mode 5 (command >M5 via the serial interface). 1.8.3 ADJUSTING THE KH FACTOR FOR THE DEMO BOARD The 71M6543 Demo Board is shipped with a pre-programmed scaling factor Kh of 3.2, i.e. 3.2 Wh per pulse. In order to be used with a calibrated load or a meter calibration system, the board should be connected to the AC power source using the spade terminals on the bottom of the board. On the revision REV 4.0 of the Demo Board, the shunt resistor wires are terminated directly to the dual-pin headers J22, J23, and J24 on the board. The Kh value can be derived by reading the values for IMAX and VMAX (i.e. the RMS current and voltage values that correspond to the 250mV maximum input signal to the IC), and inserting them in the following equation for Kh: Kh = 54.5793*VMAX*IMAX / (SUM_SAMPS*WRATE*X), See the explanation in section 1.10.5 for an exact definition of the constants and variables involved in the equation above. 1.8.4 ADJUSTING THE DEMO BOARDS TO DIFFERENT SHUNT RESISTORS The Demo Board REV 4.0 is prepared for use with 120 µΩ or 50 µOhm (ANSI option) shunt resistors in all current channels. A certain current flowing through the 120 µΩ shunt resistors will result in the maximum voltage drop at the ADC of the 71M6103 Remote Sensor ICs. This current is defined as IMAX and can be adjusted at MPU location 0x03 (see section 1.10.3). IMAX will need to be changed when different values are used for the shunt resistor(s) which will require that WRATE has to be updated as shown in section 1.10.5. The scaling of the neutral current measurement is controlled by the i_max2 variable at MPU location 0x01C. 1.8.5 USING THE PRE-AMPLIFIER In its default setting, the 71M6543F applies a gain of 1 to the current input for the neutral current inputs (IAP/IAN pins). This gain is controlled with the PRE_E bit in I/O RAM (see the Data Sheet). The command line interface (RI command) can be used to set or reset this bit. It is recommended to maintain the gain of setting of 1 (RI2704=0x90). 1.8.6 USING CURRENT TRANSFORMERS (CTS) All phases of the 71M6543 REV 5.0 Demo Board are equipped with connectors for external CTs. CTs should be connected to the headers J5, J7, and J10. A burden resistor of 1.7 Ω is installed at the R26, R27, and R31 (and corresponding resistors for phases B and C) locations. With a 2000:1 ratio CT, the maximum current will be 208 A. For the CT configuration, a shunt resistor of 50 µΩ should be installed to measure the neutral current. Different values can be accommodated by changing the value of i_max2 at MPU location 0x1C (see section 1.10.3). Note: The CT configuration requires a different version of the Demo Code than is used for the shunt configuration. 1.8.7 ADJUSTING THE DEMO BOARDS TO DIFFERENT VOLTAGE DIVIDERS The 71M6543 Demo Board comes equipped with its own network of resistor dividers for voltage measurement mounted on the PCB. The resistor values (for the 71M6543 REV 2.0 Demo Board) are 2.5477MΩ (R66, R64, R47, R39 combined) and 750Ω (R32, R52, R72), resulting in a ratio of 1:3,393.933. This means that VMAX equals 176.78mV*3,393.933 = 600V. A large value for VMAX has been selected in order to have headroom for Page: 19 of 91 v5 71M6543 Demo Board User’s Manual over-voltages. This choice need not be of concern, since the ADC in the 71M6543F has enough resolution, even when operating at 120 Vrms or 240 Vrms. If a different set of voltage dividers or an external voltage transformer (potential transformer) is to be used, scaling techniques should be used. In the following example we assume that the line voltage is not applied to the resistor divider for VA formed by R66, R64, R47, R39, and R32, but to a voltage transformer with a ratio N of 20:1, followed by a simple resistor divider. We also assume that we want to maintain the value for VMAX at 600V to provide headroom for large voltage excursions. When applying VMAX at the primary side of the transformer, the secondary voltage Vs is: Vs = VMAX / N Vs is scaled by the resistor divider ratio RR. When the input voltage to the voltage channel of the 71M6543 is the desired 177mV, Vs is then given by: Vs = RR * 176.8 mV Resolving for RR, we get: RR = (VMAX / N) / 176.8 mV = (600V / 30) / 176.8 mV = 170.45 This divider ratio can be implemented, for example, with a combination of one 16.95 kΩ and one 100 Ω resistor. If potential transformers (PTs) are used instead of resistor dividers, phase shifts will be introduced that will require negative phase angle compensation. Teridian Demo Code accepts negative calibration factors for phase. 1.9 CALIBRATION PARAMETERS 1.9.1 GENERAL CALIBRATION PROCEDURE Any calibration method can be used with the 71M6543F ICs. This Demo Board User’s Manual presents calibration methods with three or five measurements as recommended methods, because they work with most manual calibration systems based on counting "pulses" (emitted by LEDs on the meter). Naturally, a meter in mass production will be equipped with special calibration code offering capabilities beyond those of the 71M6543 Demo Code. It is basically possible to calibrate using voltage and current readings, with or without pulses involved. For this purpose, the MPU Demo Code should be modified to display averaged voltage and current values (as opposed to momentary values). Also, automated calibration equipment can communicate with the Demo Boards via the serial interface and extract voltage and current readings. This is possible even with the unmodified Demo Code. Complete calibration procedures are given in section 2.2 of this manual. Regardless of the calibration procedure used, parameters (calibration factors) will result that will have to be applied to the 71M6543F IC in order to make the chip apply the modified gains and phase shifts necessary for accurate operation. Table 1-4 shows the names of the calibration factors, their function, and their location in the CE RAM. Again, the command line interface can be used to store the calibration factors in their respective CE RAM addresses. For example, the command >]10=+16302 stores the decimal value 16302 in the CE RAM location controlling the gain of the current channel (CAL_IA). The command >]11=4005 stores the hexadecimal value 0x4005 (decimal 16389) in the CE RAM location controlling the gain of the voltage channel (CAL_VA). Page: 20 of 91 v5 71M6543 Demo Board User’s Manual Table 1-4: CE RAM Locations for Calibration Constants Coefficient CE Address (hex) CAL_VA CAL_VB CAL_VC 0x11 0x14 0x17 Adjusts the gain of the voltage channels. +16384 is the typical value. The gain is directly proportional to the CAL parameter. Allowed range is 0 to 32767. If the gain is 1% slow, CAL should be increased by 1%. CAL_IA CAL_IB CAL_IC 0x10 0x13 0x16 Adjusts the gain of the current channels. +16384 is the typical value. The gain is directly proportional to the CAL parameter. Allowed range is 0 to 32767. If the gain is 1% slow, CAL should be increased by 1%. LCOMP2_A LCOMP2_B LCOMP2_C 0x12 0x15 0x18 This constant controls the phase compensation. No compensation occurs when LCOMP2_n=16384. As LCOMP2_n is increased, more compensation is introduced. CE codes for CT configuration do not use delay adjustment. These codes use phase adjustment (PHADJ_n). Description 1.9.2 CALIBRATION MACRO FILE The macro file in Figure 1-4 contains a sequence of the serial interface commands. It is a simple text file and can be created with Notepad or an equivalent ASCII editor program. The file is executed with HyperTerminal’s Transfer->Send Text File command. CE0 ]10=+16022 ]11=+16381 ]12=+17229 CE1 /disable CE /CAL_IA (gain=CAL_IA/16384) /CAL_VA (gain=CAL_VA/16384) /LCOMP2_A (default 16384) /enable CE Figure 1-4: Typical Calibration Macro File It is possible to send the calibration macro file to the 71M6543F for “temporary” calibration. This will temporarily change the CE data values. Upon power up, these values are refreshed back to the default values stored in flash memory. Thus, until the flash memory is updated, the macro file must be loaded each time the part is powered up. The macro file is run by sending it with the transfer  send text file procedure of HyperTerminal. Use the Transfer  Send Text File command! 1.9.3 UPDATING THE DEMO CODE (HEX FILE) The d_merge program updates the hex file (for example 6543eq5_6103_5p3c_01nov10.hex, or similar) with the values contained in the macro file. This program is executed from a DOS command line window. Executing the d_merge program with no arguments will display the syntax description. To merge macro.txt and old_6543_demo.hex into new_6543_demo.hex, use the command: d_merge old_6543_demo.hex macro.txt new_6543_demo.hex The new hex file can be written to the 71M6543F/71M6543H through the ICE port using the ADM51 in-circuit emulator or the TFP-2 flash programmer. 1.9.4 UPDATING CALIBRATION DATA IN FLASH OR EEPROM It is possible to make data permanent that had been entered temporarily into the CE RAM. The transfer to EEPROM memory is done using the following serial interface command: >]CLS Thus, after transferring calibration data with manual serial interface commands or with a macro file, all that has to be done is invoking the U command. Page: 21 of 91 v5 71M6543 Demo Board User’s Manual Similarly, calibration data can be restored to default values using the CLD command. After reset, calibration data is copied from the EEPROM, if present. Otherwise, calibration data is copied from the flash memory. Writing 0xFF into the first few bytes of the EEPROM deactivates any calibration data previously stored to the EEPROM. 1.9.5 LOADING THE CODE FOR THE 71M6543F INTO THE DEMO BOARD Hardware Interface for Programming: The 71M6543F IC provides an interface for loading code into the internal flash memory. This interface consists of the following signals: E_RXTX (data), E_TCLK (clock), E_RST (reset), ICE_E (ICE enable) These signals, along with V3P3D and GND are available on the emulator headers J14. Programming of the flash memory requires a specific in-circuit emulator, the ADM51 by Signum Systems or the Flash Programmer (TFP-2) provided by Maxim. Chips may also be programmed before they are soldered to the board. Gang programmers suitable for highvolume production are available from BPM Microsystems. In-Circuit Emulator: If firmware exists in the 71M6543F flash memory; it has to be erased before loading a new file into memory. Figure 1-5 and Figure 1-6 show the emulator software active. In order to erase the flash memory, the RESET button of the emulator software has to be clicked followed by the ERASE button. To successfully erase the flash memory, the following steps have to be taken: 1) Disable the CE by writing 0x00 to address 0x2000 2) Write 0x20 to address 0x2702 (FLSH_UNLOCK[ ] register in I/O RAM) 3) 4) 5) Reset the demo board (RESET button or power cycle) Activate the ERASE button in the WEMU51 user interface Now, new code can be loaded into the flash memory Once the flash memory is erased, the new file can be loaded using the commands File followed by Load. The dialog box shown in Figure 1-6 will then appear making it possible to select the file to be loaded by clicking the Browse button. Once the file is selected, pressing the OK button will load the file into the flash memory of the 71M6543F IC. At this point, the emulator probe (cable) can be removed. Once the 71M6543F IC is reset using the reset button on the Demo Board, the new code starts executing. Figure 1-5: Emulator Window Showing Reset and Erase Buttons (see Arrows) Page: 22 of 91 v5 71M6543 Demo Board User’s Manual Figure 1-6: Emulator Window Showing Erased Flash Memory and File Load Menu Flash Programmer Module (TFP-2): The operational firmware of the TFP2 will have to be upgraded to revision 1.53. Follow the instructions given in the User Manual for the TFP-2. 1.9.6 THE PROGRAMMING INTERFACE OF THE 71M6543F Flash Downloader/ICE Interface Signals The signals listed in Table 1-5 are necessary for communication between the TFP2 Flash Downloader or ICE and the 71M6543F. Signal Direction Function ICE_E Input to the 71M6543F ICE interface is enabled when ICE_E is pulled high E_TCLK Output from 71M6543F Data clock E_RXTX Bi-directional Data input/output E_RST Bi-directional Flash Downloader Reset (active low) Table 1-5: Flash Programming Interface Signals The E_RST signal should only be driven by the Flash Downloader when enabling these interface signals. The Flash Downloader must release E_RST at all other times. Page: 23 of 91 v5 71M6543 Demo Board User’s Manual 1.10 DEMO CODE 1.10.1 DEMO CODE DESCRIPTION The Demo Board is shipped preloaded with Demo Code in the 71M6543F chip. The code revision can easily be verified by entering the command >i via the serial interface (see section 1.8.1). Check with your local Maxim representative/FAE or for the latest revision, or obtain the latest revision from the Maxim web site. The Demo Code offers the following features: • It provides basic metering functions such as pulse generation, display of accumulated energy, frequency, date/time, and enables the user to evaluate the parameters of the metering IC such as accuracy, harmonic performance, etc. • It maintains and provides access to basic household functions such as the real-time clock (RTC). • It provides access to control and display functions via the serial interface, enabling the user to view and modify a variety of meter parameters such as Kh, calibration coefficients, temperature compensation etc. • It provides libraries for access of low-level IC functions to serve as building blocks for code development. A detailed description of the Demo Code can be found in the Software User’s Guide (SUG). In addition, the comments contained in the library provided with the Demo Kit can serve as useful documentation. The Software User’s Guide contains the following information: • Design guide • Design reference for routines • Tool Installation Guide • List of library functions • 80515 MPU Reference (hardware, instruction set, memory, registers) 1.10.2 DEMO CODE VERSIONS Each sensor configuration has its own Demo Codes version. Using the wrong type of Demo Code will result in malfunction. Table 1-6 shows the available Demo Code versions and their application. Table 1-6: Demo Code Versions File Name Supported Configuration Supported Demo Board 6543equ5_6103_5p3d_14feb11.hex 3 x 71M6103 with shunts 71M6543 DB REV4-0 3 x 71M6113 with shunts 71M6543 DB REV4-0 3 x 71M6203 with shunts 71M6543 DB REV4-0 3 x 71M6603 with shunts 71M6543 DB REV4-0 CT 71M6543 DB REV5-0 6543equ5_6113_5p3d_14feb11.hex 6543equ5_6203_5p3d_14feb11.hex 6543equ5_6603_5p3d_14feb11.hex 6543equ5_ct_5p3d_14feb11.hex 1.10.3 IMPORTANT MPU ADDRESSES In the Demo Code, certain MPU XRAM parameters have been given addresses in order to permit easy external access. These variables can be read via the command line interface (if available), with the )n$ command and written with the )n=xx command where n is the word address. Note that accumulation variables are 64 bits long and are accessed with )n$$ (read) and )n=hh=ll (write) in the case of accumulation variables. The first part of the table, the addresses )00..)1F, contains adjustments, i.e. numbers that may need adjustment in a demonstration meter, and so are part of the calibration for demo code. In a reference meter, these may be in an unchanging table in code space. The second part, )20..)2F, pertains to calibration, i.e. variables that are likely to need individual adjustments for quality production meters. The third part, )30…, pertains to measurements, i.e. variables and registers that may need to be read in a demonstration meter. Page: 24 of 91 v5 71M6543 Demo Board User’s Manual Table 1-7: MPU XRAM Locations Name Purpose LSB Default )? Signed? Bits i_min Metering element enters creep mode if current is below this value. If 0, creep logic is disabled. In creep mode, on each metering element, Wh, VARh, i0sqsum, and other items are zeroed. Same units as CE’s i0sqsum. 0.08A )0 signed 32 )1 N/A 8 cfg Configure meter operation on the fly. bit0: 1=Display KWh. bit1: 1=clear accumulators, errors, etc. (e.g. “)1=2”) bit2: 1=Reset demand. (e.g. “)1=4”) bit3: 1=CE Raw mode. MPU does not change CE values with creep or small current calculations. bit5: 1= Send a message once per second for IEC 62056-217 Mode D on UART 1, at 2400 BAUD, even parity. The meter’s serial number and current Wh display are sent as data. UART 1 is routed to an IR LED if possible. Mode D data fields are prefaced with OBIS codes in legacy format. 7,1 bit6: 1=Auto calibration mode 1 bit7: 1=Enable Tamper Detect 0 Do nothing special. 2,1 v_min error if below. Also creep.* Below this, low voltage seconds are counted. Voltage, Wh, VARh, Frequency, and other voltage-dependent items are zeroed. Same units as CE’s v0sqsum. 40V )2 signed 32 )3 signed 16 i_max Scaling Maximum Amps for standard sensor. 0.1A 110.5 for 200 μOhm shunt with 8x preamp. 884.0 A for 200 μOhm shunt, 442.0A for 400 μOhm shunt. v_max Scaling Maximum Volts for PCB 0.1V 600 V, for the Demo Board. )4 signed 16 i_limit Error if exceeded. Same units as CE’s i0sqsum. 50.9A = 30A*sqrt(2) *120% )5 signed 32 v_limit Error if exceeded.* Same units as CE’s v0sqsum. 407.3V = 240V*sqrt(2) *120% )6 signed 32 Page: 25 of 91 v5 71M6543 Demo Board User’s Manual wrate_mpu Convert from CE counts to pulses. CE’s w0sum units per pulse, rounded up to next largest CE count so Wh accumulation and display is always rounded down. 3.2 Wh )7 signed 32 interval The number of minutes of a demand interval. Count of minutes. (60/interval)*interval = 60. 2 minutes )8 unsigned 8 mains_hz Expected number of cycles per second of mains. 0 disables the software RTC run from mains. Hz 0 )9 unsigned 8 See data sheet. Temperature is calculated as temp = (measured_temp – temp_datum) /temp_cal1 + temp_cal0 See data sheet. )A signed 32 temp_cal1 Machine-readable units per 0.1C mtr_cal1 [0..3]9 Linear temperature calibration for meter elements A..D. ppm*(T - mtr_datum), in 0.1˚C 150 )B..E signed 16 mtr_cal2 [0..3]9 Squared temperature calibration for meter elements A..D. 2 ppm2*(T - mtr_datum) , in 0.1˚C -392 )F..1 2 signed 16 y_datum Center temperature of the crystal. 0.1 C 25C )13 signed 16 y_cal1 5 RTC adjust, linear by temp. 10 ppb*(T - y_datum), in 0.1˚C 0 )14 signed 16 y_cal2 5 RTC adjust, squared by temp. 1 ppb*(T - y_datum)2, in 0.1˚C 38 )15 signed 16 s_cal 1 Accumulation intervals of Autocalibration Count of accumulation intervals of calibration. accumulation intervals cover both chop polarities. )C signed 16 v_cal 1 Volts of Autocalibration 0.1 V rms of AC signal applied to all elements during calibration. 2400 240 V is the default full-scale for meter test. )D signed 16 i_cal 1 Amps of Autocalibration 0.1 A rms of AC signal applied to all elements during calibration. Power factor of calibration signal must be 1. 300 30 A is the default full-scale for meter test. )E signed 16 Page: 26 of 91 v5 71M6543 Demo Board User’s Manual lcd_idx lcd_bit mfr_id 6 Page: 27 of 91 Selects LCD’s current display. 0: Meter identification. (“#”) 1: Display variation from calibration temperature, 0.1C 2: Display mains Hz, 0.1 Hz 3: mWh, total 4: mWh total exported. 5: mVARh, total. 6: mVARh, total exported. 7:mVAh, total 8: Operating hours. 9: Time of day 10: Calendar date 11: Power factor, total 12: Angle between phase 0 & 1 13: Main edge count, last accumulation. 14: KW, instantaneous total 15: V, instantaneous max of all phases. 16: A, total 17: V, Battery (“VB”) 18: Seconds, bad power (“BPS”) 19: Seconds, tamper (- = tamper in progress) (“TS”) 20: LCD Test Scrolling not standard for these: 111: PF, phase 0 112: Angle, phase 0 & 1 114: KW, phase 0 115: V, phase 0 116: A, phase 0 211: PF, phase 1 212: Angle, phase 0 & 2 214: KW, phase 1 215: V, phase 1 216: A, phase 1 311: PF, phase 2 312: Angle, phase 2.0 314: KW, phase 2 315: V, phase 2 316: A, phase 2 416: A, neutral (measured) 3 )19 signed 16 Defines sequence of LCD displays. The value is a bit mask that describes a scrolling display sequence. Each set bit permits a display with an lcd_idx value from 0..31. Each is displayed for 7 seconds. Ordered by increasing bit number. If value is zero, display does not change. 0 )1A unsigned 32 Manufacturer’s ID text string of the meter 3 ASCII bytes, in MSB of 32-bit number. Least significant byte should be zero. For AMR demonstrations, sent as the manufacturer’s ID of the meter. “TSC”, 0x54534300 )1B unsigned 32 v5 71M6543 Demo Board User’s Manual i_max2 4 in_limit in_wait 3 3 Like i_max, except for the 2nd current sensor. Currents, Wh etc. using currents from the second sensor are rescaled into the same units as the first current sensor. 0.1 Amps 208 A (2080) )1C signed 16 Maximum valid neutral current. Same units as CE’s i3sqsum. 0.1A )1D signed 32 The time that neutral current can exceed n_max before the neutral error is asserted. Count of accumulation intervals. 10 secs. )1E signed 16 Reserved )1F 32 bit unsigned number. For AMR demonstrations, this is sent in decimal as the identification number of the meter. 100000000 )20 signed 32 See data sheet. Temperature is calculated as temp = (measured_temp – temp_datum)/temp_cal1 + temp_cal0 n/a )21 signed 32 Center temperature of a meter element’s temperature curve. 0.1C 22C )22.. 25 signed 16 Default value for RTCA_ADJ, the crystal’s capacitor adjustment. See data sheet. Set from hardware value when hardware is changed. Hardware default (see data sheet). )26 unsigned 8 y_cal0 5,8 RTC offset rate adjust 100ppb 0 )27 signed 16 v_bat_min Minimum valid battery voltage. Units of hardware’s battery measurement register. 2V on a real PCB; should be adjusted for battery and chip. )28 signed 32 cal_cnt Count of calibrations. In demo code, it also checks adjustments. Counts number of times calibration is saved, to a maximum of 255. 0 )29 unsigned 8 ver_hash Checked to prevent old calibration data from being used by new code. Value that changes with the banner text, and therefore with the version, date and time. Uses data_ok() to calculate a value from the string. n/a )2A unsigned 8 data_ok_cal Checks calibrations. In demo code, it also checks adjustments. Checked by data_ok() of calibration value. n/a )2B unsigned 16 meter_id Identification number of meter. 8 temp_datum 8 mtr_datum[0. .3]8 rtca_adj 8 8 Reserved Page: 28 of 91 Count of temperature sensor at calibration. )2C. )2F v5 71M6543 Demo Board User’s Manual Status of meter. Nonvolatile. Bits: See table below. 0 = no errors )30 wh_im Wh energy register. Nonvolatile. First 32-bit number is a count of pulses, =3.2 Wh in 3-phase meters, or 1 in 1-phase. A fractional pulse is present in the CE data, but not preserved. n/a )31 64 wh_ex Wh exported energy register. Nonvolatile. Like wh_im n/a )32 64 varh_im VARh register. Nonvolatile. Like wh_im n/a )33 64 varh_ex VARh exported register. Nonvolatile. Like wh_im n/a )34 64 dmd_max Maximum demand, W Units of w0sum n/a )35 signed 32 dmd_max_rtc Time of maximum demand. Standard time and date structure. year, month, date, hour, min )36.. 3A unsigned 7x8 v_bat Battery voltage at last measurement. Volatile; not saved on power failure. 0.1V n/a )3B signed 8 acc_cnt Count of accumulation intervals since reset, or last clear. Cleared with )1=2 or meter read. Volatile; not saved on power failure. count n/a )3C signed 32 tamper_sec Counts seconds that tamper errors were asserted. Cleared with )1=2 or meter read. Nonvolatile. This is a tamper measurement. n/a )3D signed 32 sag_sec Counts seconds that voltage low error occurred. or meter read. Nonvolatile. This is a power quality measurement. n/a )3E signed 32 Counts seconds that neutral current error was asserted. Cleared with )1=2 or meter read. Nonvolatile. This is a power quality measurement. n/a )3F signed 32 rtc_copy Clock time and date when data was last read from the RTC. Standard time and date structure. year, month, date, hour, min, sec n/a )40.. 45 unsigned 8*7 save_cnt Number of power register saves. n/a n/a )46 unsigned 16 data_ok_reg Checks data. n/a n/a )47 unsigned 16 state_bit_ar y in_sec 3 unsigned 32 1 Valid only when autocalibration is integrated. Meters with metering equations with differential currents or voltages do not normally support autocalibration. 2 Requires features not in some demo PCBs. Page: 29 of 91 v5 71M6543 Demo Board User’s Manual 3 Three-phase ICs only. Some CE codes calculate neutral current rather than measuring it. Consult the CE documentation. 4 Only in systems with two current sensors. 5 High accuracy use of this feature may require a calibrated clock. 6 IEC 62056 Manufacturers’ IDs are allocated by the FLAG association. Maxim does not own or profit from the FLAG association. Maxim’s default id may not conform, and is for demonstration purposes only. 7 Nothing in the document should be interpreted as a guarantee of conformance to a 3rd party software specification. Conformance testing is the responsibility of a meter manufacturer. 8 May require calibration for best accuracy. 9 Calibration item in high-precision “H” series meters (71M6543H only). Table 1-8: Bits in the MPU Status Word MINIA MINIB MINIC MINVA MINVB MINVC CREEPV CREEP SOFTWARE Bit No. 0 1 2 3 4 5 6 7 8 NEUTRAL SPURIOUS SAG DEMAND CALIBRATION 9 10 11 12 13 RTC_UNSET 14 HARDWARE 15 BATTERY_BAD 16 REGISTER_BAD 17 RTC_TAMPER TAMPER 18 19 Name Explanation IA is below IThrshld. Current for this phase is in creep. IB is below IThrshld. Current for this phase is in creep. IC is below IThrshld. Current for this phase is in creep. VA is below VThrshld. Voltage for this phase is in creep. VB is below VThrshld. Voltage for this phase is in creep. VC is below VThrshld. Voltage for this phase is in creep. All voltages are below VThrshld. There is no combination of current and voltage on any phase. A software defect was detected. error_software() was called. E.g.: An impossible value occurred in a selection, or the timers ran out. Neutral current was above in_limit for more than in_wait seconds. An unexpected interrupt was detected. Voltage was below VThrshld for more than in_wait seconds Demand was too big (too many watts) to be credible. Set after reset if the read of the calibration data has a bad checksum, or is from an earlier version of software. The default values should be present. Set when the clock’s current reading is A) Obtained after a cold start, indicating that there was no battery power, and therefore the clock has to be invalid. B) More than a year after the previously saved reading, or C) Earlier than the previously saved reading. In this case, the clock’s time is preserved, but the clock can’t be trusted. An impossible hardware condition was detected. For example, the woftware times out waiting for RTC_RD to become zero. Just after midnight, the demo code sets this bit if VBat < VBatMin. The read is infrequent to reduce battery loading to very low values. When the battery voltage is being displayed, the read occurs every second, for up to 20 seconds. Set after reset when the read of the power register data has a bad longitudinal redundancy check or bad software version in all 5 copies. Unlikely to be an accident. Clock set to a new value more than two hours from the previous value. Tamper was detected. Normally this is a power tamper detected in the creep logic. For example, current detected with no voltage. Table 1-9 contains LSB values for the CE registers. All values are based on the following settings: • Gain in amplifier for IAP/IAN pins selected to 1. • 71M6103, 71M6113, or 71M6203 Remote Sensor Interface is used. Note that some of the register contents can be zeroed out by the MPU when it applies functions contained in its creep logic. Page: 30 of 91 v5 71M6543 Demo Board User’s Manual 1.10.4 LSB VALUES IN CE REGISTERS Table 1-9: CE Registers and Associated LSB Values Register Name LSB Value Comment W0SUM_X W1SUM_X W2SUM_X 1.55124*10-12*IMAX*VMAX The real energy for elements A, B, and C, measured in Wh per accumulation interval VAR0SUM_X VAR1SUM_X VAR2SUM_X 1.55124*10-12*IMAX*VMAX The reactive energy for elements A, B, and C, measured in VARh per accumulation interval I0SQSUM_X I1SQSUM_X I2SQSUM_X INSQSUM_X 2.55872*10-12*IMAX*VMAX The sum of squared current samples in elements A, B, C, and neutral. This value is the basis for the IRMS calculation performed in the MPU. V0SQSUM_X V1SQSUM_X V1SQSUM_X 9.40448*10-13*IMAX*VMAX The sum of squared voltage samples in elements A, B, and C. 1.10.5 CALCULATING IMAX AND KH The relationship between the resistance of the shunt resistors and the system variable IMAX is determined by the type of Remote Sensor Interface used, and is as follows: IMAX = 0.044194 / RS for the 71M6603 IMAX = 0.019642 / RS for the 71M61X1 IMAX = 0.012627 / RS for the 71M6203 Where: RS = Shunt resistance in Ω Table 1-10 shows IMAX values resulting from possible combinations of the shunt resistance value and the type of 71M6x0x Remote Sensor Interface used for the application. Table 1-10: IMAX for Various Shunt Resistance Values and Remote Sensor Types Remote Sensor Interface 71M6603 Rated Current [A] 60 78.57 98.21 122.76 163.68 196.42 786 982 1228 1637 1964 3403 4254 5318 7090 8508 168.36 252.54 505.08 1684 2525 5050 7293 10939 21878 Shunt Resistor Value [µΩ] IMAX [A] 44.2 500 400 300 250 200 160 120 71M6103, 71M6113 100 19.64 250 200 160 120 100 71M6203, 71M6203 200 12.63 75 50 25 Page: 31 of 91 WRATE for kH = 88.39 110.49 147.31 176.78 220.97 276.21 368.28 IMAX Entry at MPU 0x03 +884 +1105 +1473 +1768 +2209 +2762 +3683 Max. RMS Voltage at IAP/IAN [mV] 3.2, VMAX = 600 V, X = 0.09375 3829 4786 6381 7657 9572 11965 15953 v5 71M6543 Demo Board User’s Manual The meter constant kh (Wh per pulse) is calculated as follows: Kh = 54.5793*VMAX*IMAX / (SUM_SAMPS*WRATE*X), where VMAX = RMS voltage at the meter input corresponding to 176.8 mV RMS at the VA pin of the 71M6543. This value is determines by the divider ratio of the voltage divider resistors. For the 71M6543 Demo Board, this value is 600. IMAX/ = RMS current through one current sensor corresponding to the maximum RMS voltage at the input pins of the 71M6103, as determined by the formula above. SUM_SAMPS = The value in the SUM_SAMPS register in I/O RAM (2520 for this version of the Demo Code). WRATE = The value in the pulse rate adjustment register of the CE. X = The pulse rate adjustment modifier, determined by the PULSE_FAST and PULSE_SLOW bits in the CECONFIG register. For the 71M6103, a kh of 3.2 (3.2 Wh per pulse) is achieved by the following combination of system settings: VMAX = 600 V IMAX/ = 163.7 A, based on RS = 120 μΩ SUM_SAMPS = 2520 WRATE = 7090 X = 0.09375, based on PULSE_FAST =0 and PULSE_SLOW = 1 The calculations shown above are simplified if the calibration spreadsheet provided with each Demo Kit is used. Figure 1-7 shows an example: The user enters data in the yellow fields, and the results will show in the green fields. Figure 1-7: Worksheet from Calibration Spreadsheets REV 6.0 1.10.6 DETERMINING THE TYPE OF 71M6X0X Sometimes it is useful to be able to determine the type of 71M6x0x Remote Sensor Interface that is mounted on the Demo Board. The CLI can be used to find out which Remote Sensor Interface is present, using the following steps: 1) Type 6R1.14, 6R2.14, or 6R3.14, depending on which phase is tested. 2) The CLI will respond with a two-byte hex value, e.g. E9DB. 3) Write the hex value out as binary sequence, e.g. 1110 1001 1101 1011. Bits 4 and 5 determine the type of the 71M6x0x Remote Sensor Interface, as shown in Table 1-11. Page: 32 of 91 v5 71M6543 Demo Board User’s Manual Table 1-11: Identification of 71M6x0x Remote Sensor Types Bit 5/Bit 4 00 01 71M6x0x Remote Interface 71M6601 or 71M6603 71M6103 (Polyphase) or 71M6113 (Polyphase) 10 71M6201 or 71M6203 11 Invalid Current [A] For Accuracy Class (%) 60 1 100 1 0.5 200 0.2 -- -- 1.10.7 COMMUNICATING WITH THE 71M6X0X Some commands are useful to communicate with the 71M6x0x Remote Sensor Interface for the purpose of test and diagnosis. Some useful commands are: 1) 6C1.42 – this command causes the 71M6x0x Remote Sensor Interface to output its reference voltage on the TMUX pin (pin 5). 2) 6R1.20 – this command returns the reading from the temperature sensor (STEMP) of the 71M6x0x Remote Sensor Interface in a two-byte hexadecimal format (e.g. FFDF). Negative readings are signaled by the MSB being 1. T = 22°C + (STEMP*0.33 - (STEMP2)*0.00003)°C Example: For STEMP = 0xFFDF the decimal equivalent is -32. The temperature calculates to 22°C – 10.59°C = 11.4°C. Note that the IC temperature is averaged and displayed more accurately with the M1 command. 1.10.8 BOOTLOADER FEATURE Demo Codes 5.4F and later are equipped with a bootloader feature. This feature allows the loading of code via the serial interface (USB connector CN1) when a Signum ADM51 emulator or Maxim TFP2 Flash Loader is not available. The bootloader functions as follows: 1) Meter code must be modified in order to be loaded by the bootloader. The meter code must start at address 0x0400, and its interrupt vector table must also start at 0x400. The bootloader itself is located at address 0x0000 and must be loaded into the IC by some method if the flash memory of the 71M6543 is empty or if code of a previous revision is loaded. The bootloader is part of Demo Code 5.4F. 2) The bootloader loads Intel hex-86 files at 38,400 baud 8 bits, no parity. It will only accept record types 0, 4 and 1, which are the types produced by Maxim’s Teridian bank_merge program or checksum program, and the Keil compiler (PK51). No records may overlap. (Keil, bank_merge and checksum produce this style of hex file by default.) The records from 0x00000 to 0x00400 are ignored, so that the bootloader can't overwrite itself. 3) If the bootloader load process is not invoked, the bootloader jumps to address 0x0400 and executes the code found there. 4) A detailed description of the bootloader can be found in the _readme.txt file contained in the source code ZIP package (folder 6543_5p4f_14dec11\Config\Series6540\BtLd). For a 71M6543 Demo Board containing code with the bootloader, instructions for loading new code are as follows: 1) Connect a PC running HyperTerminal or a similar terminal program to the 71M6543 Demo Board. Set the program to 38,400 baud 8 bits, no parity, XON/XOFF flow control. 2) Turn off the power to the 71M6543 Demo Board. 3) Install a jumper from board ground to the VARh pulse output (JP7, right pin), which is also SEGDIO2. A low voltage on this pin signals to the bootloader that new code should be loaded via the UART. 4) Apply power to the meter. 5) After a brief delay, the Wh pulse LED (D5) will light up (SEGDIO1). The bootloader should send a ":" on the UART to the PC. If this occurs, the flash is erased, and the 71M6543 Demo Board is ready to load code. - If this does not occur, check the jumper, and reset or repower the unit - If the Wh LED still does not light up, then the boot code is not installed. Page: 33 of 91 v5 71M6543 Demo Board User’s Manual - If the Wh LED lights up, but the ":" does not appear, debug the RS-232 wiring. Possible issues are that the baud rate is not 38400 baud, or that the wiring is wrong, (debug using a known-good meter), or that the terminal program in the PC is not working. 6) Send the Intel hex file built for operation with the bootloader (e.g. 6543eq5_6103_5p4f_14dec11.hex) using the ‘Send Text File’ command of HyperTerminal. 7) During the load procedure, the Wh LED will blink. Once the load process is completed it stops blinking. The Wh LED should remain on solidly at the completion of the load procedure, which indicates an error-free load. If the LED turns off at the end, an error must have occurred. In this case the load should be repeated. The bootloader sends a "1" on the UART if the load succeeded, and "0" if it failed. 8) Check the display of terminal program (e.g. the PC running Hyperterminal). If no checksum error has occurred, the bootloader sends a 1 on the UART. In case of an error, reset the 71M6543 Demo Board, or turn it off and on, and reload the code. 9) Remove the jumper on JP7. This will cause the loaded Demo Code to start. Page: 34 of 91 v5 71M6543 Demo Board User’s Manual 2 2 APPLICATION INFORMATION 2.1 CALIBRATION THEORY A typical meter has phase and gain errors as shown by φS, AXI, and AXV in Figure 2-1. Following the typical meter convention of current phase being in the lag direction, the small amount of phase lead in a typical current sensor is represented as -φS. The errors shown in Figure 2-1 represent the sum of all gain and phase errors. They include errors in voltage attenuators, current sensors, and in ADC gains. In other words, no errors are made in the ‘input’ or ‘meter’ boxes. INPUT I φL φ L is phase lag ERRORS −φS METER IRMS A XI φS is phase lead Π V W V RMS AXV ERROR ≡ IDEAL = I , ACTUAL = I AXI IDEAL = IV cos(φ L ) ACTUAL = IV AXI AXV cos(φ L − φ S ) IDEAL = V , ACTUAL = V AXV ACTUAL − IDEAL = ACTUAL − 1 IDEAL IDEAL Figure 2-1: Watt Meter with Gain and Phase Errors. During the calibration phase, we measure errors and then introduce correction factors to nullify their effect. With three unknowns to determine, we must make at least three measurements. If we make more measurements, we can average the results. 2.1.1 CALIBRATION WITH THREE MEASUREMENTS The simplest calibration method is to make three measurements. Typically, a voltage measurement and two Watt-hour (Wh) measurements are made. A voltage display can be obtained for test purposes via the command >MR2.1 in the serial interface. Let’s say the voltage measurement has the error EV and the two Wh measurements have errors E0 and E60, where E0 is measured with φL = 0 and E60 is measured with φL = 60. These values should be simple ratios—not percentage values. They should be zero when the meter is accurate and negative when the meter runs slow. The fundamental frequency is f0. T is equal to 1/fS, where fS is the sample frequency (2560.62Hz). Set all calibration factors to nominal: CAL_IA = 16384, CAL_VA = 16384, LCOMP2_A = 16384. Note: The derivation of the calibration formulae is provided for CTs, where a phase adjustment is performed to compensate for the phase error of the CT. For operation with 71M6xxx Remote Sensor Interfaces, a delay compensation LCOMP2_n is used. Spreadsheets are available to calculate the calibration coefficients for all hardware configurations. Page: 35 of 91 v5 71M6543 Demo Board User’s Manual From the voltage measurement, we determine that 1. AXV = EV + 1 We use the other two measurements to determine φS and AXI. IV AXV AXI cos(0 − φ S ) − 1 = AXV AXI cos(φ S ) − 1 IV cos(0) 2. E0 = 2a. AXV AXI = 3. E 60 = IV AXV AXI cos(60 − φ S ) cos(60 − φ S ) − 1 = AXV AXI −1 IV cos(60) cos(60) 3a. E 60 = AXV AXI [cos(60) cos(φ S ) + sin(60) sin(φ S )] −1 cos(60) E0 + 1 cos(φ S ) = AXV AXI cos(φ S ) + AXV AXI tan(60) sin(φ S ) − 1 Combining 2a and 3a: 4. E 60 = E 0 + ( E 0 + 1) tan(60) tan(φ S ) 5. tan(φ S ) = 6. φ S = tan −1  E 60 − E 0 ( E 0 + 1) tan(60)   E 60 − E 0   ( E 0 + 1) tan(60)  and from 2a: 7. AXI = E0 + 1 AXV cos(φ S ) Now that we know the AXV, AXI, and φS errors, we calculate the new calibration voltage gain coefficient from the previous ones: CAL _ V NEW = CAL _ V AXV We calculate PHADJ from φS, the desired phase lag: [ ]   tan(φ S ) 1 + (1 − 2 −9 ) 2 − 2(1 − 2 −9 ) cos(2πf 0T ) PHADJ = 2 20   −9 −9  (1 − 2 ) sin( 2πf 0T ) − tan(φ S ) 1 − (1 − 2 ) cos(2πf 0T )  [ ] And we calculate the new calibration current gain coefficient, including compensation for a slight gain increase in the phase calibration circuit. CAL _ I NEW = Page: 36 of 91 CAL _ I AXI 1 1+ 2 − 20 PHADJ (2 + 2 − 20 PHADJ − 2(1 − 2 −9 ) cos(2πf 0T )) 1 − 2(1 − 2 −9 ) cos(2πf 0T ) + (1 − 2 −9 ) 2 v5 71M6543 Demo Board User’s Manual 2.1.2 CALIBRATION WITH FIVE MEASUREMENTS The five measurement method provides more orthogonality between the gain and phase error derivations. This method involves measuring EV, E0, E180, E60, and E300. Again, set all calibration factors to nominal, i.e. CAL_IA = 16384, CAL_VA = 16384, PHADJ_A = 0. Note: The derivation of the calibration formulae is provided for CTs, where a phase adjustment is performed to compensate for the phase error of the CT. For operation with 71M6xxx Remote Sensor Interfaces, a delay compensation LCOMP2_n is used. Spreadsheets are available to calculate the calibration coefficients for all hardware configurations. First, calculate AXV from EV: 1. AXV = EV + 1 Calculate AXI from E0 and E180: IV AXV AXI cos(0 − φ S ) − 1 = AXV AXI cos(φ S ) − 1 IV cos(0) 2. E0 = 3. E180 = 4. E 0 + E180 = 2 AXV AXI cos(φ S ) − 2 5. AXV AXI = 6. AXI = IV AXV AXI cos(180 − φ S ) − 1 = AXV AXI cos(φ S ) − 1 IV cos(180) E 0 + E180 + 2 2 cos(φ S ) ( E 0 + E180 ) 2 + 1 AXV cos(φ S ) Use above results along with E60 and E300 to calculate φS. 7. E 60 = IV AXV AXI cos(60 − φ S ) −1 IV cos(60) = AXV AXI cos(φ S ) + AXV AXI tan(60) sin(φ S ) − 1 8. E300 = IV AXV AXI cos(−60 − φ S ) −1 IV cos(−60) = AXV AXI cos(φ S ) − AXV AXI tan(60) sin(φ S ) − 1 Subtract 8 from 7 9. E 60 − E300 = 2 AXV AXI tan(60) sin(φ S ) use equation 5: E 0 + E180 + 2 tan(60) sin(φ S ) cos(φ S ) 10. E 60 − E300 = 11. E 60 − E300 = ( E 0 + E180 + 2) tan(60) tan(φ S ) 12. φ S = tan −1  Page: 37 of 91   ( E 60 − E300 )   tan(60)( E 0 + E180 + 2)  v5 71M6543 Demo Board User’s Manual Now that we know the AXV, AXI, and φS errors, we calculate the new calibration voltage gain coefficient from the previous ones: CAL _ V NEW = CAL _ V AXV We calculate PHADJ from φS, the desired phase lag: [ ]   tan(φ S ) 1 + (1 − 2 −9 ) 2 − 2(1 − 2 −9 ) cos(2πf 0T ) PHADJ = 2   −9 −9  (1 − 2 ) sin( 2πf 0T ) − tan(φ S ) 1 − (1 − 2 ) cos(2πf 0T )  20 [ ] And we calculate the new calibration current gain coefficient, including compensation for a slight gain increase in the phase calibration circuit. CAL _ I NEW = CAL _ I AXI 1 1+ 2 − 20 PHADJ (2 + 2 PHADJ − 2(1 − 2 −9 ) cos(2πf 0T )) 1 − 2(1 − 2 −9 ) cos(2πf 0T ) + (1 − 2 −9 ) 2 − 20 2.2 CALIBRATION PROCEDURES 2.2.1 CALIBRATION EQUIPMENT Calibration requires that a calibration system is used, i.e. equipment that applies accurate voltage, load current and load angle to the unit being calibrated, while measuring the response from the unit being calibrated in a repeatable way. By repeatable we mean that the calibration system is synchronized to the meter being calibrated. Best results are achieved when the first pulse from the meter opens the measurement window of the calibration system. This mode of operation is opposed to a calibrator that opens the measurement window at random time and that therefore may or may not catch certain pulses emitted by the meter. It is essential for a valid meter calibration to have the voltage stabilized a few seconds before the current is applied. This enables the Demo Code to initialize the 71M6543F and to stabilize the PLLs and filters in the CE. This method of operation is consistent with meter applications in the field as well as with metering standards. During calibration of any phase, a stable mains voltage has to be present on phase A. This enables the CE processing mechanism of the 71M6543F necessary to obtain a stable calibration. 2.2.2 DETAILED CALIBRATION PROCEDURES The procedures below show how to calibrate a meter phase with either three or five measurements. The PHADJ equations apply only when a current transformer is used for the phase in question. Note that positive load angles correspond to lagging current (see Figure 2-2). Page: 38 of 91 v5 71M6543 Demo Board User’s Manual Voltage Positive direction Current lags voltage (inductive) +60° Current -60° Current leads voltage (capacitive) Voltage Generating Energy Using Energy Figure 2-2: Phase Angle Definitions The calibration procedures described below should be followed after interfacing the voltage and current sensors to the 71M6543F chip. When properly interfaced, the V3P3 power supply is connected to the meter neutral and is the DC reference for each input. Each voltage and current waveform, as seen by the 71M6543F, is scaled to be less than 250mV (peak). 2.2.3 CALIBRATION PROCEDURE WITH THREE MEASUREMENTS Each phase is calibrated individually. The calibration procedure is as follows: 1) The calibration factors for all phases are reset to their default values, i.e. CAL_In = CAL_Vn = 16384, and LCOMP2_n = 16384. 2) An RMS voltage Videal consistent with the meter’s nominal voltage is applied, and the RMS reading Vactual of the meter is recorded. The voltage reading error Axv is determined as Axv = (Vactual - Videal ) / Videal 3) Apply the nominal load current at phase angles 0° and 60°, measure the Wh energy and record the errors E0 AND E60. 4) Calculate the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n, using the formulae presented in section 2.1.1 or using the spreadsheet presented in section 2.2.5. 5) Apply the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n to the meter. The memory locations for these factors are given in section 1.9.1. 6) Test the meter at nominal current and, if desired, at lower and higher currents and various phase angles to confirm the desired accuracy. 7) Store the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n in the EEPROM or FLASH memory of the meter. If the calibration is performed on a Teridian Demo Board, the methods involving the command line interface, as shown in sections 1.9.3 and 1.9.4, can be used. 8) Repeat the steps 1 through 7 for each phase. Tip: Step 2 and the energy measurement at 0° of step 3 can be combined into one step. Page: 39 of 91 v5 71M6543 Demo Board User’s Manual 2.2.4 CALIBRATION PROCEDURE WITH FIVE MEASUREMENTS Each phase is calibrated individually. The calibration procedure is as follows: 1) The calibration factors for all phases are reset to their default values, i.e. CAL_In = CAL_Vn = 16384, and LCOMP2_n = 0. 2) An RMS voltage Videal consistent with the meter’s nominal voltage is applied, and the RMS reading Vactual of the meter is recorded. The voltage reading error Axv is determined as Axv = (Vactual - Videal ) / Videal 3) Apply the nominal load current at phase angles 0°, 60°, 180° and –60° (-300°). Measure the Wh energy each time and record the errors E0, E60, E180, and E300. 4) Calculate the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n, using the formulae presented in section 2.1.2 or using the spreadsheet presented in section 2.2.5. 5) Apply the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n to the meter. The memory locations for these factors are given in section 1.9.1. 6) Test the meter at nominal current and, if desired, at lower and higher currents and various phase angles to confirm the desired accuracy. 7) Store the new calibration factors CAL_In, CAL_Vn, and LCOMP2_n in the EEPROM or FLASH memory of the meter. If a Demo Board is calibrated, the methods involving the command line interface shown in sections 1.9.3 and 1.9.4 can be used. 8) Repeat the steps 1 through 7 for each phase. Tip: Step 2 and the energy measurement at 0° of step 3 can be combined into one step. 2.2.5 CALIBRATION SPREADSHEETS Calibration spreadsheets are available on the Maxim web site (www.maxim-ic.com). Figure 2-3 shows the spreadsheet for three measurements. Figure 2-4 shows the spreadsheet for five measurements with three phases. Use the standard calibration spreadsheets (for 71M651x, 71M652x, or 71M653x) when calibrating meters with CTs. These spreadsheets will provide results for the PHADJ_n parameters instead of the LCOMP2_n parameters. For the calibration, data should be entered into the calibration spreadsheets as follows: 1. Calibration is performed one phase at a time. 2. Results from measurements are generally entered in the yellow fields. Intermediate results and calibration factors will show in the green fields. 3. The line frequency used (50 or 60Hz) is entered in the yellow field labeled AC frequency. 4. After the voltage measurement, measured (observed) and expected (actually applied) voltages are entered in the yellow fields labeled “Expected Voltage” and “Measured Voltage”. The error for the voltage measurement will then show in the green field above the two voltage entries. 5. The relative error from the energy measurements at 0° and 60° are entered in the yellow fields labeled “Energy reading at 0°” and “Energy reading at 60°”. The corresponding error, expressed as a fraction will then show in the two green fields to the right of the energy reading fields. 6. The spreadsheet will calculate the calibration factors CAL_IA, CAL_VA, and LCOMP2_A from the information entered so far and display them in the green fields in the column underneath the label “new”. 7. If the calibration was performed on a meter with non-default calibration factors, these factors can be entered in the yellow fields in the column underneath the label “old”. For a meter with default calibration factors, the entries in the column underneath “old” should be at the default value (16384). Page: 40 of 91 v5 71M6543 Demo Board User’s Manual Figure 2-3: Calibration Spreadsheet for Three Measurements Note: The values for LCOMP2_n may have to be changed slightly depending on shunt sensor and cable inductance. The values from the spreadsheets provide starting points. For example, if after calibration the error or 0° load angle is 0.024%, but +1.25% at 60° and -1.18% at 300°, LCOMP2_n should be increased to minimize the errors at 60° and at 300°. Page: 41 of 91 v5 71M6543 Demo Board User’s Manual Figure 2-4: Calibration Spreadsheet for Five Measurements Note: The spreadsheets shown above apply to calibration for systems with 71M6xxx Remote Sensor Interfaces. For CT-bases meters, the regular spreadsheets (also used for the 71M6513, 71M6533, and 71M6534) should be used. 2.2.6 COMPENSATING FOR NON-LINEARITIES Nonlinearity is most noticeable at low currents, as shown in Figure 2-5, and can result from input noise and truncation. Nonlinearities can be eliminated using the QUANTA, QUANTB,and QUANTC variables. 12 error [%] 10 error 8 6 4 2 0 0.1 1 10 100 I [A] Figure 2-5: Non-Linearity Caused by Quantification Noise The error can be seen as the presence of a virtual constant noise current. While 10mA hardly contribute any error at currents of 10A and above, the noise becomes dominant at small currents. Page: 42 of 91 v5 71M6543 Demo Board User’s Manual The value to be used for QUANT can be determined by the following formula: error V ⋅I 100 QUANT = − VMAX ⋅ IMAX ⋅ LSB Where error = observed error at a given voltage (V) and current (I), VMAX = voltage scaling factor, as described in section 1.8.3, IMAX = current scaling factor, as described in section 1.8.3, -10 LSB = QUANT LSB value = 7.4162*10 W Example: Assuming an observed error as in Figure 2-5, we determine the error at 1A to be +1%. If VMAX is 600V and IMAX = 208A, and if the measurement was taken at 240V, we determine QUANTn as follows: 1 240 ⋅ 1 100 = −11339 QUANT = − 600 ⋅ 208 ⋅ 7.4162 ⋅ 10 −10 There is a QUANTn register for each phase, and the values are to be written to the CE locations 0x28, 0x2C, or 0x30. It does not matter which current value is chosen as long as the corresponding error value is significant (5% error at 0.2A used in the above equation will produce the same result for QUANTn). Input noise and truncation can cause similar errors in the VAR calculation that can be eliminated using the QUANT_VARn variables. QUANT_VARn is determined using the same formula as QUANT. 2.3 TEMPERATURE COMPENSATION 2.3.1 ERROR SOURCES This section discussed the temperature compensation for meters equipped with 71M6xxx Remote Sensor Interfaces. Compensation for CT-based systems is much simpler, since the error sources are only the reference voltage, the burden resistor, and the voltage dividers. For a meter to be accurate over temperature, the following major sources of error have to be addressed: 1) The resistance of the shunt sensor(s) over temperature. The temperature coefficient (TC) of a shunt resistor is typically positive (PTC) and can be far higher than the TC of the pure Manganin material used in the shunt. TCs of several hundred PPM/°C have been observed for certain shunt resistors. A shunt resistor with +100 PPM/°C will increase its resistance by 60°C * 100*10-6 PPM/°C, or +0.6% when heated up from room temperature to +85°C, causing a relative error of +0.6% in the current reading. This makes the shunt the most pronounced influence on the temperature characteristics of the meter. Typically, the TC of shunt resistors is mostly linear over the industrial temperature range and can be compensated, granted the shunt resistor is at the same temperature as the on-chip temperature sensors on the 71M6x0x Remote Sensor Interface IC or the 71M6543. Generally, the lower the TC of a shunt resistor, the better it can be compensated. Shunts with high TCs require more accurate temperature measurements than those with low TCs. For example, if a shunt with 200 PPM/°C is used, and the temperature sensor available to the 71M6543 is only accurate to ±3°C, the compensation can be inaccurate by as much as 3°C*200PPM/°C = 600 PPM, or 0.06%. 2) The reference voltage of the 71M6x03 Remote Sensor Interface IC. At the temperature extremes, this voltage can deviate by a few mV from the room temperature voltage and can therefore contribute to some temperature-related error. The TC of the reference voltage has both linear and quadratic components (TC1 and TC2). Since the 71M6X03 Remote Interface IC has an on-chip temperature sensor, and since the development of the reference voltage over temperature is predictable (to within ±10 PPM/°C for high-grade parts). For example, compensation of the current reading is possible for a part -6 with ±80 PPM°C to within ±60°C *80*10 PPM/°C, or ±0.48%. The reference voltage can be approached by the nominal reference voltage: VNOM(T) = VNOM(22)+(T-22)*TC1+(T-22)2*TC2 Actual values for TC1 and TC2 can be obtained using the formulae given in the data sheets for the 71M6543 and for the 71M6x03. Additionally, the Demo Code will automatically generate the compensation coefficients based on TC1 and TC2 using the fuse values in each device. Page: 43 of 91 v5 71M6543 Demo Board User’s Manual 3) The reference voltage of the 71M6543F IC. At the temperature extremes, this voltage can deviate by a few mV from the room temperature voltage and can therefore contribute to some temperature-related error, both for the current measurement (pins IAP and IAN) of the neutral current sensor (if used) and for the voltage measurement (pin VA). As with the Remote Sensor Interface IC, the TC of the 71M6543F reference voltage has both linear and quadratic components. The reference voltage of the 71M6543F over temperature is predictable within ±40 PPM/°C, which means that compensation of the current and voltage reading is possible to within ±0.24%. The 71M6543H has more predictable temperature coefficients that allow compensation to within ±10 PPM/°C, resulting in ±0.06% inaccuracy. The temperature coefficients of the reference voltage are published in the 71M6543F/H data sheet. The Demo Code will automatically generate the compensation coefficients based on TC1 and TC2 using the fuse values in each device. 4) The voltage divider network (resistor ladder) on the Demo Board will also have a TC. Ideally, all resistors of this network are of the same type so that temperature deviations are balanced out. However, even in the best circumstances, there will be a residual TC from these components. The error sources for a meter are summed up in Table 2-1. Table 2-1: Temperature-Related Error Sources Measured Item Error Sources for Current Error Sources for Voltage Pins on 71M6543 Energy Reading for phase A VREF of 71M6xx3 for phase A 71M6543 VREF Shunt resistor for phase A Voltage divider for VA VA, ADC2/ADC3 (IBP/IBN) Energy Reading for phase B VREF of 71M6xx3 for phase B 71M6543 VREF Shunt resistor for phase B Voltage divider for VB Energy Reading for phase C VREF of 71M6xx3 for phase C 71M6543 VREF Shunt resistor for phase C Voltage divider for VC Neutral Current Reading 71M6543 VREF -- Sensor for neutral current -- VB, ADC4/ADC5) ICP/ICN VC, ADC6/ADC7 (IDP/IDN) ADC0/ADC1 (IAP/IAN) When can summarize the thermal errors per phase n in the following equation: Pn = Vn ⋅ I n ⋅ (1 + CVD ) ⋅ (1 + C4 X ) ⋅ (1 + C Sn ) ⋅ (1 + C6 X ) The terms used in the above equation are defined as follows: • Vn = voltage applied to the meter in phase n • In = current applied to the shunt in phase n • CVD = error contribution from the voltage divider • C4X = error contribution from the voltage reference of the 71M6543 • CSn = error from the shunt resistor that is connected via the Remote Interface IC • C6X = error contribution from the voltage reference of the Remote Interface IC 2.3.2 SOFTWARE FEATURES FOR TEMPERATURE COMPENSATION In the default settings for the Demo Code, the CECONFIG register has its EXT_TEMP bit (bit 22) set, which means that temperature compensation is performed by the MPU by controlling the GAIN_ADJ0 through GAIN_ADJ, registers of the CE. Generally, these four (and when using neutral current measurement, five) registers are used as follows: • • • • • GAIN_ADJ0 for VA, VB, VC – CE RAM 0x40 GAIN_ADJ1 – Current, phase A (via 71M6xx3) – CE RAM 0x41 GAIN_ADJ2 - Current, phase B (via 71M6xx3) – CE RAM 0x42 GAIN_ADJ3 - Current, phase C (via 71M6xx3) – CE RAM 0x43 GAIN_ADJ4 – Current from neutral current sensor (via 71M6543) – CE RAM 0x44 In general, the GAIN_ADJn registers offer a way of controlling the magnitude of the voltage and current signals in the data flow of the CE code. A value of 16385 means that no adjustment is performed (unity gain), which Page: 44 of 91 v5 71M6543 Demo Board User’s Manual means that the output of the gain adjust function is the same as the input. A value of 99% of 16385, or 16222, means that the signal is attenuated by 1%. The Demo Code bases its adjustment on the deviation from calibration (room) temperature DELTA_T and the coefficients PPMC and PPMC2 to implement the equation below: GAIN _ ADJ = 16385 + DELTA _ T ⋅ PPMC DELTA _ T 2 ⋅ PPMC 2 + 214 2 23 It can be seen easily that the gain will remain at 16385 (0x4001), or unity gain, when DELTA_T is zero. In the Demo Code, DELTA_T is scaled so 0.1°C corresponds to 1 LSB of DELTA_T. For complete compensation, the error sources for each channel have to be combined and curve-fit to generate the PPMC and PPMC2 coefficients, as will be shown in the following section. For Demo Codes revision 5.3a and later, the PPMC and PPMC2 coefficients are in the MPU RAM locations listed in Table 2-3: Table 2-2: MPU Registers for Temperature-Compensation PPMC Register for CE Location PPMC2 Register for 0x20 GAIN_ADJ0 0x25 GAIN_ADJ0 0x21 GAIN_ADJ1 0x26 GAIN_ADJ1 0x22 GAIN_ADJ2 0x27 GAIN_ADJ2 0x23 GAIN_ADJ3 0x28 GAIN_ADJ3 0x24 GAIN_ADJ0 0x29 GAIN_ADJ0 CE Location When the Demo Code starts up (after reset or power-up), it determines whether the meter has been calibrated. If this is not the case, the coefficients PPMC and PPMC2 are automatically determined based on information found in the 71M6543 and in the 71M6x0x Remote Sensor Interface ICs. These coefficients are calculated to compensate for the reference voltage deviation in these devices, but can be enhanced to also compensate for the shunt resistors connected to each device. 2.3.3 CALCULATING PARAMETERS FOR COMPENSATION 2.3.3.1 Shunt Resistors The TC of the shunt resistors can be characterized using a temperature chamber, a calibrated current, and a voltmeter with filtering capabilities. A few shunt resistors should be measured and their TC should be compared. This type of information can also be obtained from the manufacturer. For sufficient compensation, the TC of the shunt resistors must be repeatable. If the shunts are the only temperature-dependent components in a meter, and the accuracy is required to be within 0.5% over the industrial temperature range, the repeatability must be better than: R = (5000 PPM) / (60°C) = 83.3 PPM/°C This means that for a shunt resistor with +200 PPM/°C, the individual samples must be within +116.7 PPM/°C and 283.3 PPM/°C. Let us assume a shunt resistor of 55 µΩ in phase A. This resistor is 10% above the nominal value of 50 µΩ, but this is of minor importance, since this deviation will be compensated by calibration. In a temperature chamber, this resistor generates a voltage drop of 5.4559 mV at -40°C and 5.541 mV at +85°C with a current of 100 A applied. This is equivalent to a resistance deviation of 0.851 µΩ, or 15,473 PPM. With a temperature difference between hottest and coldest measurement of 125°C, this results in +124 PPM/°C. At high temperatures, this resistor will read the current 60°C * 124 PPM/°C, or 0.744% too high. This means that the GAIN_ADJ1 register has to be adjusted by -0.744% at the same temperature to compensate for the TC of the shunt resistor. Page: 45 of 91 v5 71M6543 Demo Board User’s Manual Let us assume that only linear components appear in the formula below, i.e. PPMC2 is zero. GAIN _ ADJ = 16385 + DELTA _ T ⋅ PPMC DELTA _ T 2 ⋅ PPMC 2 + 214 2 23 We must now find the PPMC value that decreases GAIN_ADJ by 0.744% when DELTA_T is +600 (DELTA_T is measured in tens of °C). We find PPMCS to be: PPMCS = 214 * (16263 – 16385) / 600 = -3331 2.3.3.2 Remote Sensor Reference Voltage The compensation coefficients for the reference voltage of the three 71M6103 are derived automatically by the Demo Code. Typical coefficients are in the range of +500 to -300 for PPMC6X and -200 to -400 for PPMC26X. 2.3.3.3 Reference Voltage of the 71M6543 or 71M6543H The compensation coefficients for the reference voltage of the 71M6543 are derived automatically by the Demo Code. Typical coefficients are in the range of -200 to -400 for PPMC4X and -400 to -800 for PPMC24X. 2.3.3.4 Voltage Divider In most cases, especially when identical resistor types are used for all resistors of the voltage divider ladder, the TC of the voltage divider will be of minor influence on the TC of the meter. If desired, the voltage divider can be characterized similar to the shunt resistor as shown above. The difference is that there is no individual GAIN_ADJ for each voltage channel. GAIN_ADJ0 is primarily intended to compensate for the temperature coefficients of the reference voltage. If the TC of the voltage dividers is to be considered, it has to be calculated based on the average error of each phase. Let us assume, applying 240 Vrms to a meter and recording the RMS voltage displayed by the meter at -40°C, room temperature, +55°C, and at +85°C (when averaged over all phases), we obtain the values in the center column of Table 2-3. Table 2-3: Temperature-Related Error Sources Temperature [°C] Displayed Voltage Normalized Voltage -40 246.48 240.458 25 246.01 240.0 55 245.78 239.78 85 245.56 239.57 After normalizing with the factor 240/246.01 to accommodate for the initial error, we obtain the values in the third column. We determine the voltage deviation between highest and lowest temperature to be -0.88 V, which is equivalent to -3671 PPM, or -29.4 PPM/°C. For this, we obtain a PPMCVD value of 788. 2.3.3.5 Combining the Coefficients for Temperature Compensation After characterizing all major contributors to the TC of the meter, we have all components at hand to design the overall compensation. If we examine only phase A for the moment, we find that we will need the following coefficients for the control of GAIN_ADJn: CS1: The PPMCS = -3331 determined for the shunt resistor. PPMC2S for the shunt resistor is 0. CVD: The PPMCVD value of 788 determined for the voltage divider. C4X: PPMC4X = -820 and PPMC24X = -680 C6X: PPMC6X = -620 and PPMC26X = -510 We will find that coefficients can simply be added to combine the effects from several sources of temperature dependence. Following this procedure, we obtain the coefficients for GAIN_ADJ0 (voltage measurement) as follows: • PPMCA = PPMC4X + PPMCVD = – 820 + 788 = -32 • PPMC2A = PPMC24X + PPMC2VD = -680 + 0 = -680 Page: 46 of 91 v5 71M6543 Demo Board User’s Manual Next, we obtain the coefficients for GAIN_ADJ1 (current measurement) as follows: • PPMCA = PPMCS + PPMC6X = -3331 - 620 = -3951 • PPMC2A = PPMC2S + PPMC26X = 0 - 510 = -510 Similar calculations apply to the remaining current phases. 2.3.3.6 Test Results for Temperature Compensation Temperature tests were conducted that exercised the fuse accuracy in the 71M6xxx and 71M6543 in conjunction with the capability of the 654x Code to accurately read and interpret the fuses and to compensate the gain in all measurement channels. For these tests, three 50 µΩ shunts had been characterized, and coefficients combined from the shunt coefficients and the VREF coefficients for the 71M6543H and 71M6xxx had been generated and loaded into the 71M6543H. No compensation was used for the voltage divider in the 71M6543 Demo Board. The tests were conducted with a 71M6543 Demo Board REV 3.0 populated with a 71M6543H and 3 x 71M6203 (dual-trim). Figure 2-6 shows the results for the VREF compensation only (original coefficients obtained from fuses). Figure 2-6: Wh Registration Error with VREF Compensation Figure 2-7 shows the results for the combined compensation (original coefficients obtained from fuses combined with shunt coefficients). Page: 47 of 91 v5 71M6543 Demo Board User’s Manual Figure 2-7: Wh Registration Error with Combined Compensation 2.4 TESTING THE DEMO BOARD This section will explain how the 71M6543F IC and the peripherals can be tested. Hints given in this section will help evaluating the features of the Demo Board and understanding the IC and its peripherals. Demo Board. It interfaces to a PC through a 9 pin serial port connector. It is recommended to set up the demo board with no live AC voltage connected, and to connect live AC voltages only after the user is familiar with the demo system. BEFORE CONNECTING THE DEMO BOARD TO A CALIBRATION SYSTEM OR OTHER HIGH-VOLTAGE SOURCE IT IS RECOMMENDED TO MEASURE THE RESISTANCE BETWEEN THE LINE AND THE NEUTRAL TERMINALS OF THE DEMO BOARD WITH A MULTIMETER. ANY RESISTANCE BELOW THE 1 MΩ RANGE INDICATES A AFAULTY CONNECTION RESULTING INDESTRUCTION OF THE 71M6543. 2.4.1 FUNCTIONAL METER TEST This is the test that every Demo Board has to pass before being integrated into a Demo Kit. Before going into the functional meter test, the Demo Board has already passed a series of bench-top tests, but the functional meter test is the first test that applies realistic high voltages (and current signals from current transformers) to the Demo Board. Figure 2-8 shows a meter connected to a typical calibration system. The calibrator supplies calibrated voltage and current signals to the meter. It should be noted that the current flows through the shunts or CTs that are not part of the Demo Board. The Demo Board rather receives the voltage output signals from the current sensor. An optical pickup senses the pulses emitted by the meter and reports them to the calibrator. Some calibration systems have electrical pickups. The calibrator measures the time between the pulses and compares it to the expected time, based on the meter Kh and the applied power. Page: 48 of 91 v5 Meter under Test AC Voltage Optical Pickup for Pulses Current CT Pulse Counter Calibrated Outputs 71M6543 Demo Board User’s Manual Calibrator PC Figure 2-8: Meter with Calibration System Figure 2-9 shows the screen on the controlling PC for a typical Demo Board. The error numbers are given in percent. This means that for the measured Demo Board, the sum of all errors resulting from tolerances of PCB components, current sensors, and 71M6543F tolerances was –3.41%, a range that can easily be compensated by calibration. Figure 2-10 shows a load-line obtained with a 71M6543F. As can be seen, dynamic ranges of 200:0.25, or 1:800 for current can easily be achieved. Dynamic current ranges of 2,000:1 (0.1 A to 200 A) have been achieved with 50 µΩ shunts mounted in ANSI enclosures. Figure 2-9: Calibration System Screen Page: 49 of 91 v5 71M6543 Demo Board User’s Manual Wh Poly-Phase Loadline with 150 µΩ Shunt 0.5 0.4 0° 0.3 60° 0.2 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0.1 1 10 100 Figure 2-10: Wh Load Lines at Room Temperature with 150 µΩ Shunts VARh Poly-Phase Loadline with 150 µΩ Shunt 0.5 0.4 0.3 90° 0.2 150° 0.1 0 -0.1 -0.2 -0.3 -0.4 -0.5 0.1 1 10 100 Figure 2-11: VARh Load Lines at Room Temperature with 150 µΩ Shunts 2.4.2 EMC TEST This Demo Board is not optimized for EMC. Please contact your Maxim representative or FAE for questions regarding EMC. 2.5 SENSORS AND SENSOR PLACEMENT Both sensor self-heating and sensor placement have to be considered in order to avoid side effects that can affect measurement accuracy. These considerations apply in general to both ANSI meters and IEC meters. Both meter variations will be discussed below. Page: 50 of 91 v5 71M6543 Demo Board User’s Manual 2.5.1 SELF-HEATING The effect of self-heating will be most pronounced at maximum current and depends on the following parameters: • Nominal shunt resistance • Current through the shunt resistor • Thermal mass • Heat conduction away from the shunt (thermal resistance towards the environment) • Temperature coefficient of copper and resistive material. It is quite obvious that the nominal resistance of the shunt resistor should be kept as low as possible. Table 1-10 shows a few combinations of shunt resistance and 71M6x0x part number. The parts with part numbers corresponding to higher current capacity are designed to work with low shunt resistance. Lowering the shunt resistance below the recommended limits decreases accuracy and repeatability. Good heat conduction can help to maintain the shunt temperature. Attaching the shunt to solid metallic structures such as meter terminal blocks helps decreasing the thermal resistance. This, of course, applies to meters where the terminals and other mechanical parts can be considered heat sinks, i.e. they do not heat up due to other effects. The thermal mass will control how long it takes the sensor to reach its maximum temperature. Meters, for which only short-time maximum currents are applied, can benefit from a large thermal mass, since it will increase the time constant of the temperature rise. The temperature coefficient (TC) of the shunt is a very important factor for the self-heating effect. Shunts with a TC of just a few PPM/°C can maintain good shunt accuracy even in the presence of significant self-heating. There are several methods that can be applied in the meter design to minimize the effects of self-heating: • Software algorithms emulating the thermal behavior of the shunt(s). • Direct temperature measurement, ideally with the 71M6xx3 mounted directly on the shunt (collocation) or employing some other method of temperature sensing (PTC resistor, NTC resistor, discrete temperature sensor). The effect of shunt self-heating can be described by the following formulae. First, the relative output of a shunt resistor is: ΔV/V = ΔR/R ΔR is a function of the change in temperature, the temperature coefficient (TCR), the thermal resistance (RTH), and, of course, the applied power, which is proportional to the square of the current: ∆V ∆R R ⋅ ∆T ⋅ TC R = = = I 2 R ⋅ RTH ⋅ TC R V R R Ultimately, it is up to the meter designer to select the best combination of shunt resistance, TC, shunt geometry and potential software algorithms for the given application. 2.5.2 PLACEMENT OF SENSORS (ANSI) The arrangement of the current terminals in an ANSI meter enclosure predetermines shunt orientation, but it also allows for ample space in between the sensors, which helps to minimize cross-talk between phases. A good practice is to shape the shunts like blades and to place them upright so their surfaces are parallel. In an ANSI-type 16S meter, the distance between the phase A sensor and the phase B sensor is roughly 25 mm, which makes these two phases most critical for cross-talk. For the ANSI form 2S meter, which is a frequently used single-phase configuration, the distance between the sensors is in the range of 70 mm, which makes this configuration much less critical. However, even for this case, good sensor placement is essential to avoid crosstalk. Sensor wires should be tightly twisted to avoid loops that can be penetrated by the magnetic fields of the sensors or conductors. 2.5.3 PLACEMENT OF SENSORS (IEC) The arrangement of the current terminals in a typical IEC meter enclosure predetermines the spacing of the shunts, and usually allows for only for 20 to 22 mm center-to-center spacing between the shunts. This means that the clearance between adjacent shunts is typically only 10 mm or less. A typical arrangement is shown in Page: 51 of 91 v5 71M6543 Demo Board User’s Manual Figure 2-12, left side. This arrangement is not optimized for suppression of cross-talk, but it works well in most cases. If magnetic cross-talk between shunt sensors has to be minimized, the shunts may be arranged slightly different from the standard configuration. An example with staggered shunt arrangement is shown in Figure 2-12, right side. This illustration shows the shunts as seen from inside the meter, looking towards the terminal blocks. The center shunt is lifted on spacers, which decouples the magnetic field lines. Figure 2-12: Typical Sensor Arrangement (left), Alternative Arrangement (right) Another possible arrangement is to swivel the shunts by 90°, as shown in Figure 2-13. This method is most effective at suppressing magnetic cross-talk, but requires more space in the meter enclosure. Figure 2-13: Swiveled Sensor Arrangement It is useful to minimize the loop area formed by the Manganin zone of the shunts and the wires. As with the ANSI sensors, it is recommended that sensor wires are tightly twisted to avoid loops that can be penetrated by the magnetic fields of the sensors or conductors. 2.5.4 OTHER TECHNIQUES FOR AVOIDING MAGNETIC CROSSTALK With very high currents or close distances between shunt sensors, magnetic pickup or cross-talk will sometimes occur even if good placement practices are followed. One mechanism for cross-talk is shown in Figure 2-14, where the Manganin zone and the sensor wire act as a loop that will generate an output voltage similar to that generated by a Rogowski coil. The effect of this loop can be compensated by adding a second loop on the opposite side of the shunt resistors, as shown in Figure 2-15. Page: 52 of 91 v5 71M6543 Demo Board User’s Manual Optional contact for voltage Sensor wires Copper Loop Manganin Figure 2-14: Loop Formed by Shunt and Sensor Wire Symmetrical loops Figure 2-15: Shunt with Compensation Loop Since the compensation loop is impractical, a similar compensation effect can be achieved by attaching the sensor wires in the center, as shown in Figure 2-16. An economical approach to this technique is to drill holes in 1 the center of the shunt resistor for attachment of the sensor wires . Figure 2-16: Shunt with Center Drill Holes 1 U.S. Pat. Pending Page: 53 of 91 v5 71M6543 Demo Board User’s Manual Page: 54 of 91 v5 71M6543 Demo Board User’s Manual 3 3 HARDWARE DESCRIPTION 3.1 71M6543 REV 4.0 DEMO BOARD DESCRIPTION: JUMPERS, SWITCHES AND TEST POINTS The items described in Table 3-1 refer to the flags in Figure 3-1. Table 3-1: 71M6543 REV 4.0 Demo Board Description Item # Reference Designator Name 1 D5 Wh 2 J1 PULSE X Y 3-pin header for monitoring X and Y pulses 3 JP2 BIT BANG 5-pin header for access to the SEGDIO4 and SEGDIO9 pins. BAT MODE Selector for the operation of the IC when main power is removed, using the SEGDIO8 pin. A jumper across pins 2-3 (default) indicates that no external battery is available. The IC will stay in brownout mode when the system power is down and it will communicate at 9600bd. A jumper across pins 1-2 indicates that an external battery is available. The IC will be able to transition from brownout mode to sleep and LCD modes when the system power is down. JP55: 2-pin header for the SDATA signal used by the serial EEPROM. JP52: 2-pin header for the SDATA signal used by the µWire EEPROM 4 JP1 Use Wh pulse LED. 5 JP55/JP52 -- 6 U8 LCD 3-row LCD with 6 7-segment digits per row and special metering symbols. 7 J19 SPI 2X5 header providing access to the SPI slave interface. 8 BT3 -- Alternate footprint for BT2. A circular battery may be mounted in this location (on the bottom of the board). 9 BT1 -- Location of optional battery for the support of battery modes. (Located on the bottom) Page: 55 of 91 v5 71M6543 Demo Board User’s Manual Item # Reference Designator Name 10 BT2 -- 11 J21 DEBUG Connector for the optional Debug Board. 2x8 pin male header. 12 SW5 RESET Chip reset switch: When the switch is pressed, the RESET pin of the IC is pulled high which resets the IC into a known state. 13 J12 -- 2-pin header. If a jumper installed, the battery BT1 will be connected to the V3P3SYS net. 14 J13 -- 2-pin pin header. If a jumper installed, the battery BT2/BT3 will be connected to the V3P3SYS net. Pushbutton connected to the PB pin on the IC. This pushbutton can be used in conjunction with the Demo Code to wake the IC from sleep mode or LCD mode to brown-out mode. Use Location of optional battery for the support of RTC and non-volatile RAM. BT2 has an alternate circular footprint at location BT3. 15 SW3 PB 16 TP2 GND 17 J3 IAN_IN, IAP_IN 18 SW4 SEGDIO53 18a J25 ADC0/1 19 JP6 19a J11, J15, J16 ADC8, ADC9, ADC10 20 J9 NEUTRAL The NEUTRAL voltage input. This input is connected to V3P3. This input is a spade terminal mounted on the bottom of the board. VA_IN, VB_IN, VC_IN Phase voltage inputs to the board. Each input has a resistor divider that leads to the pin on the IC associated with the voltage input to the ADC. These inputs have spade terminals mounted on the bottom of the board. 21, 23, 25 J4, J6. J8 GND test point. 2-pin header for the connection of the non-isolated shunt used for neutral current measurement. This header is on the bottom of the board. Pushbutton for optional software function. 2-pin header that allows access to the neutral current input pins on the 71M6543. A jumper is placed across JP6 to activate the internal AC power supply. Caution: High Voltage! Do not touch! 2-pin headers that allow access to the voltage input pins on the 71M6543. Caution: High Voltage! Do not touch! 22 TP1 TMUXOUT, TMUX2OUT Test points for access to the TMUXOUT and TMU2XOUT pins on the 71M6543. 24 U5 -- The IC 71M6543 soldered to the PCB. 26, 28, 29 J17, J18, J20 -- Two-pin headers for connection of the external shunt resistors (REV 4.0) or CTs (REV 5.0) to the board. 2-pin header that connects the V3P3D pin to parts on the board that use the V3P3D net for their power supply. For supply current measurements in brownout mode, the jumper on JP53 may be removed. 27 JP53 V3P3D 29a J22, J23, J24 ADC2/3, ADC4/5, ADC5/6 2-pin headers that allow access to the current input pins on the 71M6543. 30 J14 EMULATOR I/F 2x10 emulator connector port for the Signum ICE ADM-51 or for the Teridian TFP-2 Flash Programmer. 31 JP3 ICE_E 3-pin header for the control of the ICE_E signal. A jumper across pins 1-2 disables the ICE interface; a jumper across pins 2-3 enables it. Page: 56 of 91 v5 71M6543 Demo Board User’s Manual Item # Reference Designator Name Use 32 JP44 GND 3-pin header that can be used to control the PE pin of the µWire EEPROM. 33 TP3 GND GND test point. 34 JP54 -- 35 JP51 36 JP50 37 CN1 USB PORT 38 JP7 -- 39 D6 VARh 40 JP8 WPULSE 2-pin header connected to the Wh pulse LED 2-pin header that connects the SDCK signal to the serial EEPROM. -- Two-pin header for the clock signal to the µWire EEPROM. Inserting a jumper in this header enables the clock. -- Two-pin header for pulling low the CS input of the µWire EEPROM. This connector is an isolated USB port for serial communication with the 71M6543. 2-pin header connected to the VARh pulse LED VARh pulse LED. 41 JP5 UART_RX 2-pin header for connection of the RX output of the isolated USB port to the RX pin of the 71M6543. When the Demo Board is communicating via the USB port, a jumper should be installed on JP5. When the Demo Board is communicating via the Debug Board plugged into J21, the jumper should be removed. 42 JP20 5.0 VDC Circular connector for supplying the board with DC power. Do not exceed 5.0 VDC at this connector! Page: 57 of 91 v5 71M6543 Demo Board User’s Manual 1 2 4 3 5 6 7 9 8 10 42 41 40 11 39 38 37 12 36 13 35 14 15 34 16 33 17 32 18 31 18a 30 19 29a 19a 29 28 27 26 25 24 23 22 21 20 Figure 3-1: 71M6543 REV 4.0 Demo Board - Board Description Default jumper settings are indicated in yellow. Elements shown in blue are on the bottom side of the board. Page: 58 of 91 v5 71M6543 Demo Board User’s Manual 3.2 71M6543 REV 5.0 DEMO BOARD DESCRIPTION The 71M6543 REV 5.0 Demo Board is largely identical to the 71M6543 REV 4.0 Demo Board. Figure 3-2 shows the top view of this board. Figure 3-2: 71M6543 REV 5.0 Demo Board – Top View Page: 59 of 91 v5 71M6543 Demo Board User’s Manual 3.3 BOARD HARDWARE SPECIFICATIONS PCB Dimensions Width, length Thickness Height w/ components 134 mm x 131 mm (5.276” x 5.157”) 1.6mm (0.062”) 40 mm (1.57”) Environmental Operating Temperature Storage Temperature -40°…+85°C -40°C…+100°C Power Supply Using internal AC supply DC Input Voltage (powered from DC supply) Supply Current 100 V…240 V RMS 5.0 VDC ±0.3 V < 10 mA typical Input Signal Range AC Voltage Signal (VA, VB, VC) AC Current Signals (IA, IB, IC) from Shunt AC Current Signals (IA, IB, IC) from CT 0…240 V RMS 0…19.64 mV RMS 0…176.8 mV RMS Interface Connectors DC Supply (J20) Emulator (J14) Voltage Input Signals Current Input Signals USB port (PC Interface) Debug Board (J2) SPI Interface Circular connector 10x2 header, 0.05” pitch Spade terminals on PCB bottom 0.1” 1X2 headers on PCB bottom USB connector 8x2 header, 0.1” pitch 5x2 header, 0.1” pitch Functional Specification Program Memory NV memory Time Base Frequency 64 KB FLASH memory 1Mbit serial EEPROM 32.768kHz, ±20PPM at 25°C Controls and Displays RESET PB Numeric Display “Wh” “VARh” Push-button (SW5) Push-button (SW3) 3X8-digit LCD, 7 segments per digit, plus meter symbols red LED (D5) red LED (D6) Measurement Range Voltage Current Page: 60 of 91 120…600 V rms (resistor division ratio 1:3,398) Dependent on shunt resistance or CT winding ratio v5 71M6543 Demo Board User’s Manual 4 4 APPENDIX This appendix includes the following documentation, tables and drawings: 71M6543 Demo Board Description 71M6543 REV 4.0 Demo Board Electrical Schematic 71M6543 REV 4.0 Demo Board Bill of Materials 71M6543 REV 4.0 Demo Board PCB layers (copper, silk screen, top and bottom side) Schematics comments 71M6543 REV 5.0 Demo Board Electrical Schematic 71M6543 REV 5.0 Demo Board Bill of Materials 71M6543 REV 5.0 Demo Board PCB layers (copper, silk screen, top and bottom side) Debug Board Description Debug Board Electrical Schematic Debug Board Bill of Materials Debug Board PCB layers (copper, silk screen, top and bottom side) 71M6543 IC Description 71M6543 Pin Description 71M6543 Pin-out Page: 61 of 91 v5 71M6543 Demo Board User’s Manual 4.1 71M6543 DEMO BOARD REV 4.0 ELECTRICAL SCHEMATIC Pull JP53 for BRN measurements. JP53current 2 1 C52 1000pF C22 0.1uF C51 0.1uF GND Ferrite Bead 600ohm V3P3SY S R1 VBAT VLCD C64 0.1uF C63 0.1uF VLCD SW3 1K R4 C18 0.1uF SW5 100 GND C21 0.1uF R103 10K GND R106 1K TP1 GND SERIAL EEPROM GND A0 A1 A2 GND VCC WP SCL SDA SER EEPROM SPI_DI SPI_DO SPI_CK SPI_CSZ V3P3D 1 3 5 7 9 J19 2 4 6 8 10 HDR5X2 2 HDR2X1 U4 1 2 3 4 1 C20 0.1uF 8 7 6 5 GND TMUXOUT TMUX2OUT V3P3D 1 JP54 2 SDCK HDR2X1 R104 10K R105 10K V3P3D 1 JP55 2 SDATA R137 XTAL_GND GND VBAT_RTC VBAT V3P3SYS ADC2 ADC3 ADC4 ADC5 ADC6 ADC7 GND XOUT NC NC NC GNDA_K TEST VADC10 VADC9 VADC8 V3P3A_K IADC1 IADC0 VREF VLCD PB RESET TMUXOUT/SEG47 TMUX2OUT/SEG46 SEGDIO45 SEGDIO44 SEGDIO43 SEGDIO42 SEGDIO41 SEGDIO40 SPI_CK/SEGDIO39 71M6543-100TQFP GND 1K NC NC NC SEGDIO54 OPT_RX/SEGDIO55 WPULSE VPULSE SDCK SDATA SEGDIO4 NC SEGDIO5 SEGDIO6 SEGDIO7 SEGDIO8 SEGDIO9 SEGDIO10 SEGDIO11 SEGDIO12 SEGDIO13 SEGDIO14 SEGDIO15 SEGDIO16 SEGDIO17 NC 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 SDCK1 JP50 HDR2X1 JP51 2 SEGDIO54 OPT_RX WPULSE VPULSE SDCK SDATA SEGDIO4 ADC1 ADC3 ADC5 ADC7 ADC10 ADC0 ADC2 ADC4 ADC6 R138 10K JP44 8 7 6 5 VCC PE ORG VSS 1 2 3 SER EEPROM (uWire) V3P3D 1 JP52 2 GND HDR2X1 10K V3P3D SEGDIO8 GND XPULSE Y PULSE SEGDIO8 SEGDIO9 SEGDIO10 SEGDIO11 SEGDIO12 SEGDIO13 SEGDIO14 SEGDIO15 SEGDIO16 SEGDIO17 R144 10K 100 R151 R143 JP1 1 2 3 +5V_USB 1 RX_USB 2 3 GND_USB 4 5 6 7 8 JP2 R150 1 2 3 4 5 GND U2 VCCIO RXD RI# GND NC DSR# DCD# CTS# BIT BANG HDR 10K UART 1 JP45 1 2 3 R13 GND 100K FT232RQ SEGDIO10 J21 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 HDR8X2 1 1000pF V3P3D TMUX2OUT TMUXOUT UART_TX 62 62 62 1 2 +5V_USB RX_USB TX_USB GND_USB GND_USB COM0 COM1 COM2 1D,1G,1A DP1,1C,1B DP2,2E,2F 2D,2G,2A DP0,2C,2B X4,3E,3F 3D,3G,3A DP3,3C,3B X3,4E,4F 4D,4G,4A DP4,4C,4B X2,5E,5F 5D,5G,5A DP5,5C,5B X1,6E,6F 6D,6G,6A DP6,6C,6B 10D,10G,10A DP10,10C,10B X13,11E,11F,X10,X17,X18 11D,11G,11A DP11,11C,11B X14,12E,12F,X12,X21 12D,12G,12A DP12,12C,12B,X11,X20,X19 1 2 3 4 U3 VDD1VDD2 VIA VOA VOB VIB GND1GND2 JP5 C74 2 UART_RX_ISO 0.1uF HDR2X1 UART_RX GND 100pF Size B Date: C71 0.1uF GND D10 R19 TX&RXLED +5V_USB 1K LED GND_USB VBUS D- USB-W D+ GND CN1 R18 L1 +5V_USB Ferrite Bead 600ohm C73 C72 C3 0.01uF 0.1uF 4.7uF GND_USB 71M6543 Meter Demo Board Document Number D6540 Friday , January 07, 2011 Rev 4.0 Sheet 2 of Figure 4-1: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 1/4 Page: 62 of 91 COM0 COM1 COM2 SEGDIO25 SEGDIO24 SEGDIO35 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 SEGDIO17 SEGDIO16 SEGDIO15 SEGDIO14 SEGDIO13 SEGDIO12 SEGDIO11 SEGDIO29 SEGDIO30 SEGDIO22 SEGDIO31 SEGDIO32 SEGDIO44 SEGDIO33 SEGDIO34 SEGDIO43 SEGDIO40 SEGDIO42 V3P3SY S UART_TX UART_RX_ISO GND 8 7 6 5 ADUM3201 0 Title 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 USB Connector, straight 1 2 3 4 C55 R9 R10 R11 C70 LCD VLS-6648 +5V R109 10K C1 LCD 24 23 22 21 20 19 18 17 GND 100 0.1uF AGND NC CBUS0 CBUS1 GND VCC RESET# GND V3P3SY S SEGDIO52 GND CS CLK DI DO V3P3D OPT_RX OPT_TX GND V3P3SY S 1 2 3 4 C59 Q1 100pF BP103 R79 OPT_TX COM3 COM4 COM5 X5,1E,1F,7F,13F,13E FE,13G,13D 7D,13A,13C 7C,13B,DP13 7G,14F,14E 7B,14G,14D 7A,14A,14C DP7,14B,DP14 8F,15F,15E 8E,15G,15D 8D,15A,15C 8C,15B,DP15 8G,16F,16E 8B,16G,16D 8A,16A,16C DP8,16B,DP16 9F,17F,17E 9E,17G,17D 9D,17A,17C 9G,17B,DP17 9C,18F,18E 9A,18G,18D X7,X8,X6,9B,18A,18C DP9,18B,DP18 X15,10E,10F,X9,X16,X22 GND_USB C77 GND OPT_RX LD274 U8 SEGDIO54 U9 2 HDR2X1 R12 100K GND ADC9 1 V3P3D R107 10K D7 COM3 1 COM4 2 COM5 3 SEGDIO284 SEGDIO255 SEGDIO246 SEGDIO357 SEGDIO218 SEGDIO209 SEGDIO19 10 SEGDIO18 11 SEGDIO17 12 SEGDIO16 13 SEGDIO15 14 SEGDIO14 15 SEGDIO13 16 SEGDIO12 17 SEGDIO11 18 SEGDIO29 19 SEGDIO30 20 SEGDIO22 21 SEGDIO31 22 SEGDIO32 23 SEGDIO33 24 SEGDIO34 25 SEGDIO23 26 SEGDIO40 27 SEGDIO41 28 GND 0.1uF HDR2X1 ADC8 GND 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 76 77 78 79 80 81 ADC10 82 ADC9 83 ADC8 84 85 ADC1 86 ADC0 87 VREF 88 89 PB 90 91 TMUXOUT 92 TMUX2OUT 93 94 SEGDIO44 95 SEGDIO43 96 SEGDIO42 97 SEGDIO41 98 SEGDIO40 99 SPI_CK 100 C26 0.1uF 19 17 15 13 11 9 7 5 3 1 J14 R142 10K TP3 TP2 R108 10K U5 XIN NC NC GNDA VBAT_RTC VBAT V3P3SYS IADC2 IADC3 IADC4 IADC5 IADC6 IADC7 GNDD3 V3P3D VDD ICE_E E_RXTX/SEG48 E_TCLK/SEG49 E_RST/SEG50 RX TX OPT_TX/SEGDIO51 SEGDIO52 SEGDIO53 XTAL_GND L16 32.768KHz V3P3SY S SPI_DI/SEGDIO38 SPI_DO/SEGDIO37 SPI_CSZ/SEGDIO36 SEGDIO35 SEGDIO34 SEGDIO33 SEGDIO32 SEGDIO31 SEGDIO30 SEGDIO29 SEGDIO28 COM0 COM1 COM2 COM3 SEGDIO27/COM4 SEGDIO26/COM5 SEGDIO25 SEGDIO24 SEGDIO23 SEGDIO22 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 C25 10pF JP3 SEGDIO53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 XTAL_GND XIN Y1 SW4 1K SPI_DI SPI_DO SPI_CSZ SEGDIO35 SEGDIO34 SEGDIO33 SEGDIO32 SEGDIO31 SEGDIO30 SEGDIO29 SEGDIO28 COM0 COM1 COM2 COM3 COM4 COM5 SEGDIO25 SEGDIO24 SEGDIO23 SEGDIO22 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 C24 15pF 2 Note: Place C24, C25, Y1 close to U5 ICE_EN C49 1000pF GND R2 C62 GND 0.1uF DNP PULSE OUTPUTS 22pF GND C50 1000pF R77 100K GND C47 10uF 2 HDR2X1 22pF 33 C45 10uF GND 1 2 3 C30 SLUG C36 1000pF GND J1 + V3P3D 10K JP7 C31 9 10 11 12 13 14 15 16 1 2 3 + HDR2X1 C28 0.1uF C57 1000pF 32 31 30 29 28 27 26 25 V3P3SY S 1 VPULSE RTS# DTR# TXD NC OSCO OSCI TEST NC GND XPULSE Y PULSE GND DIO5 VARS 20 18 16 14 12 10 8 6 4 2 E_RXTX E_TCLK E_RST 2 HDR2X1R76 2 D6 V3P3SY S ICE Header 5 6 BT3 BATTERY JP8 GND EMULATOR I/F R15 R16 R17 62 62 62 V3P3D CBUS4 CBUS2 CBUS3 NC NC USBDP USBDM 3V3OUT BT2 BATTERY 1 WPULSE 10K 1 GND C60 0.1uF R74 2 1 BT1 BATTERY V3P3SY S 1 V2P5 ICE_EN E_RXTX E_TCLK E_RST UART_RX UART_TX OPT_TX SEGDIO52 C43 1000pF + C61 1000pF + C19 0.1uF V3P3SY S 2 1 V3P3SY S 2 1 VBAT 2 1 2 1 VBAT_RTC DIO4 WATTS 5 6 D5 V3P3SY S 1 J13 J12 v5 5 71M6543 Demo Board User’s Manual L17 NEUTRAL C53 1000pF 1 From NEUTRAL terminal. 2 C46 R139 1.5 C35 2.2uF 1.5KE350A D17 C6 10uF U6 C27 0.1uF 1 2 4 L8 180uH C5 0.1uF 4.02K S4 S3 S2 S1 BP FB D 8 7 6 5 + C7 10uF C44 1000pF D9 ES1J JP6 LNK304-TN 2 1 2 1 R148 820 5VDC D8 S1J R111 + * + 0.03 uF C54 R110 L_RECT V3P3SY S Ferrite Bead 600ohm 0.1uF DNP 2K + C2 22uF R20 U1 8.06K 1 2 3 TL431 C42 1000pF JP20 + R21 25.5K C39 100uF L18 Ferrite Bead 600ohm GND R149 68 R152 68 1 NEUTRAL VA_IN J4 1 R141 1 VA_IN R8 75K DNP 2 RV1 VARISTOR 100 R140 D12 3.4K S1J VA_IN 1 NEUTRAL VB_IN J6 1 R73 1 VB_IN R7 75K DNP 2 RV2 VARISTOR 100 R146 D13 3.4K S1J VB_IN 1 NEUTRAL 2 RV3 VARISTOR VC_IN J8 1 VC_IN 1 R6 75K DNP R6, R7, R8 can be used to generate a virtual neutral. R65 R147 D14 100 3.4K S1J VC_IN JP4 2 1 2 1 GND NEUTRAL V3P3SY S NEUTRAL Title Size B Date: 71M6543 Meter Demo Board Document Number D6543 Wednesday , December 15, 2010 Rev 4.0 Sheet 3 of Figure 4-2: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 2/4 Page: 63 of 91 v5 5 71M6543 Demo Board User’s Manual IAP_IN 1 2 IA_IN IAN_IN 1 2 J17 0 Ohm L9 R27 R26 3.4 3.4 DNP DNP 100 PPM 100 PPM 0 Ohm Population Options: Part 71M6xxx CT Option R26, R27 DNP 3.4 Ohm 1206 (100 PPM), or R89 499 R26,R27,R32 DNP 5.1 Ohm MELF (50 PPM) R89, R90 499 Ohm 10 kOhm C48 R97, R92 DNP 750 Ohm 1000pF R32 C48, C58 1,000pF 1,000 pF 3.4 DNP R91 DNP 0 Ohm 100 PPM U15 71M6103 DNP C58 T4 MidCom-56 DNP 1000pF R90 499 C17 1 uF DNP R97 U15 5 TMUX GND 6 7 8 INP SN INN SP TEST VCC 750 DNP 4 750110056 4 3 3 1 6 * T4 1 2 IB_IN IBN_IN 1 2 J18 2 1 1 * 0 Ohm ADC2 Alternative footprint option for Midcom 750110057 (8 kV) to be provided on daughter boards. C17 1uF C29 1000pF DNP IA 750 DNP V3P3SY S 0 DNP 5 499 R34 3.4 DNP 100 PPM 7 8 C67 1000pF 0 Ohm TMUX GND 6 C65 1000pF R98 U16 R93 L6 R29 R28 3.4 3.4 DNP DNP 100 PPM 100 PPM IADC2/IADC3 PINS 71M6103-8SOIC GND_R6000_A R91 Population options for R29, R28, R24, etc. w hen using CTs: 2 x 3.4 Ohm, 100 PPM - Vishay/Dale CRCW12063R40FKEA, Digi-Key P/N 541-3.40FFCT-ND (1206), or 3 x 5.1 Ohm, 50 PPM - Vishay/Dale SMM02040C5108FB300, Mouser P/N 71-SMM02040C5108FB30 2 1 J22 R92 This channel used for Phase A sensors. R97, R92, R91, etc. are through-hole 1/8 W parts in order to provide enough pin-to-pin distance to accommodate the clearance and creepage required. ADC3 1.08 : 1 2 L10 IBP_IN C32 1000pF DNP INP SN INN SP TEST VCC 4 C38 1000pF DNP 750110056 3 ADC5 2 1 6 * T5 2 1 1 * 2 1 IADC4/IADC5 PINS J23 71M6103-8SOIC R94 ADC4 C34 1uF GND_R6000_B L7 750 DNP 4 3 R99 499 750 DNP R100 This channel used for Phase B sensors. C37 1000pF DNP IB 0 DNP U17 R95 ICP_IN 1 2 IC_IN ICN_IN 1 2 J20 499 0 Ohm L4 R31 R30 3.4 3.4 DNP DNP 100 PPM 100 PPM R35 3.4 DNP 100 PPM TMUX GND 6 8 INP SN INN SP TEST VCC 750 DNP 4 R96 GND_R6000_C L5 3 6* 1 1 2 ADC6 R112 INN_IN C40 1000pF DNP IC 0 DNP R14 750 R81 10K R24 R36 3.4 3.4 100 PPM DNP 100 PPM IN_IN IADC6/IADC7 PINS J24 750 DNP R101 L2 1 2 2 1 1* T6 2 1 C56 1uF 499 0 Ohm INP_IN ADC7 2 This channel used for Phase C sensors. J3 C41 1000pF DNP 750110056 4 3 71M6103-8SOIC C69 1000pF 0 Ohm 5 7 C68 1000pF R102 R25 3.4 100 PPM L3 0 Ohm ADC0 C14 1000pF R82 10K C66 GND 0.1uF J25 1 2 1 2 IACP/IAN PINS ADC0/ADC1 Isolation Barrier GND C8 1000pF R54 750 ADC1 Title Size B This channel used for NEUTRAL. No isolation, and no rem ote sensor. Date: 71M6543 Meter Demo Board Document Number D6543 Thursday , January 06, 2011 Rev 4.0 Sheet 4 of Figure 4-3: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 3/4 Page: 64 of 91 v5 5 71M6543 Demo Board User’s Manual NEUTRAL J9 1 1 If high-precision Rs are not available, use: Vishay P/N RN65D2004FB14 Mouser P/N 71-RN65D-F-2.0M TC = 100 PPM/C NEUTRAL NEUTRAL VOLTAGE CONNECTIONS VA_IN VA_IN R66 VB_IN R63 VC_IN R47 R39 VADC8 PIN Ferrite Bead 600ohm 270K R62 270K R46 4.7K R38 L13 R33 750 C9 1000pF J11 1 2 1 2 VADC9 PIN Ferrite Bead 600ohm ADC9 2M VC_IN GND ADC8 2M VB_IN R64 C15 1000pF R61 2M 270K R60 270K 270K R59 270K 4.7K R58 4.7K L12 R52 750 Ferrite Bead 600ohm L11 R72 750 C11 1000pF 1 2 1 2 J15 VADC10 PIN ADC10 C13 1000pF ADC10 1 2 J16 1 2 V3P3SY S GND Title Size A Date: Document Number DB6543 Wednesday , December 15, 2010 Rev 4.0 Sheet 5 of 5 Figure 4-4: Teridian 71M6543 REV 4.0 Demo Board: Electrical Schematic 4/4 Page: 65 of 91 v5 71M6543 Demo Board User’s Manual 4.2 71M6543 DEMO BOARD REV 5.0 ELECTRICAL SCHEMATIC Pull JP53 for BRN measurements. JP53current 1 2 C52 1000pF C22 0.1uF C51 0.1uF GND Ferrite Bead 600ohm V3P3SY S R1 VBAT VLCD C64 0.1uF C63 0.1uF VLCD SW3 1K R4 C18 0.1uF SW5 100 GND C21 0.1uF R103 10K GND R106 1K TP1 GND SERIAL EEPROM GND A0 A1 A2 GND VCC WP SCL SDA SER EEPROM SPI_DI SPI_DO SPI_CK SPI_CSZ V3P3D 1 3 5 7 9 J19 2 4 6 8 10 HDR5X2 2 HDR2X1 U4 1 2 3 4 1 C20 0.1uF 8 7 6 5 GND TMUXOUT TMUX2OUT V3P3D 1 JP54 2 SDCK HDR2X1 R104 10K R105 10K V3P3D 1 JP55 2 SDATA XTAL_GND GND VBAT_RTC VBAT V3P3SYS ADC2 ADC3 ADC4 ADC5 ADC6 ADC7 GND 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 76 77 78 79 80 81 ADC10 82 ADC9 83 ADC8 84 85 ADC1 86 ADC0 87 VREF 88 89 PB 90 91 TMUXOUT 92 TMUX2OUT 93 94 SEGDIO44 95 SEGDIO43 96 SEGDIO42 97 SEGDIO41 98 SEGDIO40 99 SPI_CK 100 XOUT NC NC NC GNDA_K TEST VADC10 VADC9 VADC8 V3P3A_K IADC1 IADC0 VREF VLCD PB RESET TMUXOUT/SEG47 TMUX2OUT/SEG46 SEGDIO45 SEGDIO44 SEGDIO43 SEGDIO42 SEGDIO41 SEGDIO40 SPI_CK/SEGDIO39 71M6543-100TQFP GND 1K NC NC NC SEGDIO54 OPT_RX/SEGDIO55 WPULSE VPULSE SDCK SDATA SEGDIO4 NC SEGDIO5 SEGDIO6 SEGDIO7 SEGDIO8 SEGDIO9 SEGDIO10 SEGDIO11 SEGDIO12 SEGDIO13 SEGDIO14 SEGDIO15 SEGDIO16 SEGDIO17 NC HDR2X1 JP51 2 HDR2X1 SEGDIO54 OPT_RX WPULSE VPULSE SDCK SDATA SEGDIO4 ADC1 ADC3 ADC5 ADC7 ADC10 ADC0 ADC2 ADC4 ADC6 GND CS CLK DI DO R138 10K JP44 8 7 6 5 VCC PE ORG VSS 1 2 3 SER EEPROM (uWire) V3P3D 1 JP52 2 GND HDR2X1 XPULSE Y PULSE SEGDIO8 SEGDIO9 SEGDIO10 SEGDIO11 SEGDIO12 SEGDIO13 SEGDIO14 SEGDIO15 SEGDIO16 SEGDIO17 R144 10K 10K V3P3D SEGDIO8 GND 100 R151 R143 JP1 1 2 3 +5V_USB 1 RX_USB 2 3 GND_USB 4 5 6 7 8 JP2 R150 1 2 3 4 5 GND U2 VCCIO RXD RI# GND NC DSR# DCD# CTS# BIT BANG HDR UART 1 10K JP45 1 2 3 R13 GND 100K FT232RQ SEGDIO10 J21 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 HDR8X2 1000pF 1 V3P3D TMUX2OUT TMUXOUT UART_TX 62 62 62 1 2 +5V_USB RX_USB TX_USB GND_USB GND_USB COM0 COM1 COM2 1D,1G,1A DP1,1C,1B DP2,2E,2F 2D,2G,2A DP0,2C,2B X4,3E,3F 3D,3G,3A DP3,3C,3B X3,4E,4F 4D,4G,4A DP4,4C,4B X2,5E,5F 5D,5G,5A DP5,5C,5B X1,6E,6F 6D,6G,6A DP6,6C,6B 10D,10G,10A DP10,10C,10B X13,11E,11F,X10,X17,X18 11D,11G,11A DP11,11C,11B X14,12E,12F,X12,X21 12D,12G,12A DP12,12C,12B,X11,X20,X19 1 2 3 4 U3 VDD1VDD2 VOA VIA VIB VOB GND1GND2 JP5 C74 2 UART_RX_ISO 0.1uF HDR2X1 UART_RX GND R19 100pF Size B Date: C71 0.1uF GND D10 TX&RXLED +5V_USB 1K LED GND_USB VBUS D- USB-B D+ GND CN1 R18 L1 +5V_USB Ferrite Bead 600ohm C73 C72 C3 0.01uF 0.1uF 4.7uF GND_USB 71M6543 Meter Demo Board Document Number D6540 Friday , January 07, 2011 Rev 5.0 Sheet 1 of Figure 4-5: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 1/4 Page: 66 of 91 COM0 COM1 COM2 SEGDIO25 SEGDIO24 SEGDIO35 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 SEGDIO17 SEGDIO16 SEGDIO15 SEGDIO14 SEGDIO13 SEGDIO12 SEGDIO11 SEGDIO29 SEGDIO30 SEGDIO22 SEGDIO31 SEGDIO32 SEGDIO44 SEGDIO33 SEGDIO34 SEGDIO43 SEGDIO40 SEGDIO42 V3P3SY S UART_TX UART_RX_ISO GND 8 7 6 5 ADUM3201 0 Title 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 USB Connector, straight 1 2 3 4 C55 R9 R10 R11 C70 LCD VLS-6648 +5V R109 10K C1 LCD 24 23 22 21 20 19 18 17 GND 100 0.1uF AGND NC CBUS0 CBUS1 GND VCC RESET# GND V3P3SY S GND V3P3SY S 1 2 3 4 C59 Q1 100pF BP103 R79 OPT_TX COM3 COM4 COM5 X5,1E,1F,7F,13F,13E FE,13G,13D 7D,13A,13C 7C,13B,DP13 7G,14F,14E 7B,14G,14D 7A,14A,14C DP7,14B,DP14 8F,15F,15E 8E,15G,15D 8D,15A,15C 8C,15B,DP15 8G,16F,16E 8B,16G,16D 8A,16A,16C DP8,16B,DP16 9F,17F,17E 9E,17G,17D 9D,17A,17C 9G,17B,DP17 9C,18F,18E 9A,18G,18D X7,X8,X6,9B,18A,18C DP9,18B,DP18 X15,10E,10F,X9,X16,X22 GND_USB SEGDIO54 U9 2 OPT_RX LD274 U8 C77 GND V3P3D V3P3D OPT_RX OPT_TX SEGDIO52 GND ADC9 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 SDCK1 R12 100K HDR2X1 ADC8 1 JP50 R107 10K D7 COM3 1 COM4 2 COM5 3 SEGDIO284 SEGDIO255 SEGDIO246 SEGDIO357 SEGDIO218 SEGDIO209 SEGDIO19 10 SEGDIO18 11 SEGDIO17 12 SEGDIO16 13 SEGDIO15 14 SEGDIO14 15 SEGDIO13 16 SEGDIO12 17 SEGDIO11 18 SEGDIO29 19 SEGDIO30 20 SEGDIO22 21 SEGDIO31 22 SEGDIO32 23 SEGDIO33 24 SEGDIO34 25 SEGDIO23 26 SEGDIO40 27 SEGDIO41 28 GND 0.1uF R137 19 17 15 13 11 9 7 5 3 1 J14 TP3 U5 XIN NC NC GNDA VBAT_RTC VBAT V3P3SYS IADC2 IADC3 IADC4 IADC5 IADC6 IADC7 GNDD3 V3P3D VDD ICE_E E_RXTX/SEG48 E_TCLK/SEG49 E_RST/SEG50 RX TX OPT_TX/SEGDIO51 SEGDIO52 SEGDIO53 XTAL_GND L16 32.768KHz TP2 R108 10K C26 0.1uF GND V3P3SY S SPI_DI/SEGDIO38 SPI_DO/SEGDIO37 SPI_CSZ/SEGDIO36 SEGDIO35 SEGDIO34 SEGDIO33 SEGDIO32 SEGDIO31 SEGDIO30 SEGDIO29 SEGDIO28 COM0 COM1 COM2 COM3 SEGDIO27/COM4 SEGDIO26/COM5 SEGDIO25 SEGDIO24 SEGDIO23 SEGDIO22 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 C25 10pF JP3 SEGDIO53 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 XTAL_GND XIN Y1 SW4 1K SPI_DI SPI_DO SPI_CSZ SEGDIO35 SEGDIO34 SEGDIO33 SEGDIO32 SEGDIO31 SEGDIO30 SEGDIO29 SEGDIO28 COM0 COM1 COM2 COM3 COM4 COM5 SEGDIO25 SEGDIO24 SEGDIO23 SEGDIO22 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 C24 15pF 2 Note: Place C24, C25, Y1 close to U5 ICE_EN R142 10K C49 1000pF GND R2 C62 GND 0.1uF DNP PULSE OUTPUTS 22pF GND C50 1000pF R77 100K GND C47 10uF 2 HDR2X1 22pF 32 31 30 29 28 27 26 25 C45 10uF GND 1 2 3 C30 33 C36 1000pF GND J1 + 10K C31 SLUG 1 2 3 + V3P3D C57 1000pF 9 10 11 12 13 14 15 16 XPULSE Y PULSE GND HDR2X1 C28 0.1uF VPULSE RTS# DTR# TXD NC OSCO OSCI TEST NC V3P3SY S 1 20 18 16 14 12 10 8 6 4 2 E_RXTX E_TCLK E_RST 2 JP7 ICE Header CBUS4 CBUS2 CBUS3 NC NC USBDP USBDM 3V3OUT GND JP8 V3P3SY S GND EMULATOR I/F R15 R16 R17 62 62 62 V3P3D HDR2X1R76 2 D6 DIO5 VARS BT3 BATTERY 1 WPULSE 10K 1 BT2 BATTERY V3P3SY S 1 R74 2 1 2 1 C60 0.1uF BT1 BATTERY GND V3P3SY S V2P5 ICE_EN E_RXTX E_TCLK E_RST UART_RX UART_TX OPT_TX SEGDIO52 C43 1000pF + C61 1000pF + C19 0.1uF 2 1 2 1 VBAT_RTC V3P3SY S 2 1 VBAT DIO4 WATTS 5 6 J13 5 6 D5 V3P3SY S 1 J12 v5 3 71M6543 Demo Board User’s Manual L17 NEUTRAL C53 1000pF 1 From NEUTRAL terminal. 2 C46 R139 1.5 C35 2.2uF 1.5KE350A D17 C6 10uF U6 C27 0.1uF 1 2 4 L8 180uH C5 0.1uF 4.02K S4 S3 S2 S1 BP FB D 8 7 6 5 + C7 10uF C44 1000pF D9 ES1J JP6 LNK304-TN 2 1 2 1 R148 820 5VDC D8 S1J R111 + * + 0.03 uF C54 R110 L_RECT V3P3SY S Ferrite Bead 600ohm 0.1uF DNP 2K + C2 22uF R20 U1 8.06K 1 2 3 TL431 C42 1000pF JP20 + R21 25.5K C39 100uF L18 Ferrite Bead 600ohm GND R149 68 R152 68 1 NEUTRAL VA_IN J4 1 R141 1 VA_IN R8 75K DNP 2 RV1 VARISTOR 100 R140 D12 3.4K S1J VA_IN 1 NEUTRAL VB_IN J6 1 R73 1 VB_IN R7 75K DNP 2 RV2 VARISTOR 100 R146 D13 3.4K S1J VB_IN 1 NEUTRAL 2 RV3 VARISTOR VC_IN J8 1 VC_IN 1 R6 75K DNP R6, R7, R8 can be used to generate a virtual neutral. R65 R147 D14 100 3.4K S1J VC_IN JP4 2 1 2 1 GND NEUTRAL V3P3SY S NEUTRAL Title Size B Date: 71M6543 Meter Demo Board Document Number D6543 Thursday , December 09, 2010 Rev 5.0 Sheet 2 of Figure 4-6: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 2/4 Page: 67 of 91 v5 3 71M6543 Demo Board User’s Manual IAP_IN 1 2 IA_IN IAN_IN 1 2 0 Ohm L9 J17 0 Ohm L10 Population Options: Part 71M6xxx CT Option R26, R27 DNP 3.4 Ohm 1206 (100 PPM), or R26,R27,R32 DNP 5.1 Ohm MELF (50 PPM) R89, R90 499 Ohm 10 kOhm C48 R97, R92 DNP 750 Ohm 1000pF R26 R32 R27 C48, C58 DNP 1,000 pF DNP 5.1 5.1 5.1 C29, C32 DNP 1,000 pF 50 PPM 50 PPM 50 PPM R91 DNP 0 Ohm C58 U15 71M6xxx DNP 1000pF DNP T4 MidCom - 56 DNP C17 1 uF DNP L9, L10 0 Ohm 600 Ohm ferrite This channel used for Phase A sensors. IBP_IN 1 2 IB_IN IBN_IN 1 2 0 Ohm R29 5.1 R89 10K R28 5.1 8 50 PPM 50 PPM INP SN INN SP TEST VCC 750 4 C32 1000pF 750110056 4 3 3 1 6 * T4 R97, R92, R91, etc. are through-hole 1/8 W parts in order to provide enough pin-to-pin distance to accommodate the clearance and creepage required. ADC3 1.08 : 1 2 DNP 2 1 1 * 2 1 IADC2/IADC3 PINS J22 ADC2 71M6103-8SOIC R90 10K C17 1uF DNP DNP GND_R6000_A R92 R91 C29 1000pF IA 750 Alternative footprint option for Midcom 750110057 (8 kV) to be provided on daughter boards. V3P3SY S 0 5 10K 50 PPM TMUX GND 6 7 8 INP SN INN SP TEST VCC 750 4 3 4 ADC5 2 1 6 * T5 2 1 1 * 2 1 IADC4/IADC5 PINS J23 71M6103-8SOIC R94 L7 C38 1000pF 750110056 3 DNP C67 1000pF DNP 0 Ohm R98 U16 R93 C65 1000pF DNP R34 5.1 TMUX GND 6 7 Population options for R29, R28, R24, etc. w hen using CTs: 2 x 3.4 Ohm, 100 PPM - Vishay/Dale CRCW12063R40FKEA, Digi-Key P/N 541-3.40FFCT-ND (1206), or 3 x 5.1 Ohm, 50 PPM - Vishay/Dale SMM02040C5108FB300, Mouser P/N 71-SMM02040C5108FB30 L6 J18 R97 U15 5 ADC4 C34 1uF DNP DNP GND_R6000_B 10K R99 This channel used for Phase B sensors. C37 1000pF IB 750 R100 0 U17 R95 ICP_IN 1 2 IC_IN ICN_IN 1 2 10K 0 Ohm L4 J20 R31 5.1 R30 5.1 50 PPM 50 PPM R35 5.1 50 PPM TMUX GND 6 8 INP SN INN SP TEST VCC 750 4 DNP R96 GND_R6000_C L5 3 6* 1 1 2 T6 DNP 2 1 1* 2 1 IADC6/IADC7 PINS J24 ADC6 C56 1uF DNP R112 10K 750 R101 C40 1000pF IC 0 0 Ohm INP_IN ADC7 2 This channel used for Phase C sensors. J3 C41 1000pF 750110056 4 3 71M6103-8SOIC C69 1000pF DNP 0 Ohm 5 7 C68 1000pF DNP R102 R14 750 L2 1 2 R81 10K IN_IN R24 5.1 R36 5.1 INN_IN 50 PPM50 PPM ADC0 C14 1000pF R25 5.1 50 PPM L3 0 Ohm R82 10K C66 GND 0.1uF J25 1 2 1 2 IACP/IAN PINS ADC0/ADC1 Isolation Barrier V3P3SY S GND C8 1000pF R54 750 ADC1 Title Size B This channel used for NEUTRAL. No isolation, and no rem ote sensor. Date: 71M6543 Meter Demo Board Document Number D6543 Thursday , March 24, 2011 Rev 5.0 Sheet 3 of Figure 4-7: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 3/4 Page: 68 of 91 v5 3 71M6543 Demo Board User’s Manual NEUTRAL J9 1 1 If high-precision Rs are not available, use: Vishay P/N RN65D2004FB14 Mouser P/N 71-RN65D-F-2.0M TC = 100 PPM/C NEUTRAL NEUTRAL VOLTAGE CONNECTIONS C15 1000pF GND All Susumu resistors: TC = 25 PPM/C VA_IN VA_IN R66 R64 R47 R39 ADC8 2M 270K 270K 4.7K L13 TC = 100 PPM/C VB_IN VB_IN R63 VC_IN R62 R46 R38 270K 270K 4.7K R33 750 C9 1000pF J11 1 2 1 2 VADC9 PIN Ferrite Bead 600ohm ADC9 2M VC_IN VADC8 PIN Ferrite Bead 600ohm R61 2M R60 270K R59 270K R58 4.7K L12 R52 750 Ferrite Bead 600ohm L11 R72 750 C11 1000pF 1 2 1 2 J15 VADC10 PIN ADC10 C13 1000pF ADC10 1 2 J16 1 2 V3P3SY S GND Title Size A Date: Document Number DB6543 Friday , January 07, 2011 Rev 5.0 Sheet 1 of 1 Figure 4-8: Teridian 71M6543 REV 5.0 Demo Board: Electrical Schematic 4/4 Page: 69 of 91 v5 71M6543 Demo Board User’s Manual 4.3 COMMENTS ON SCHEMATICS 4.3.1 GENERAL The schematics shown in this document are provided for a Demo Meter that functions under laboratory conditions. Maxim does not guarantee proper function of a meter under field conditions when using the Demo Board schematics. Care should be taken by the meter designer that all applicable design rules as well as reliability, safety and legal regulations are met by the meter design. 4.3.2 USING FERRITES IN THE SHUNT SENSOR INPUTS The 71M6543 Demo Board in shunt configuration has footprints on the PCB to accommodate ferrites between the shunt signal inputs and the 71M6xxxx Remote Sensors. These footprints, labeled L4, L5, L6, L7, L9, and L10, are populated with 0-Ohm resistors. It is not advisable to directly replace these resistors with ferrites without further changes, since this will degrade the low-current accuracy to some degree. If ferrites are needed for EMC reasons, the input circuit should be modified as shown in Figure 4-9. The modifications are as follows: Positions L4, L5, L6, etc. are replaced with ferrites. A 10Ω resistor is added across the sensor input. The two 1,000 pF capacitors from INP to local ground and from INN to local ground are replaced with 10,000 pF or higher value capacitors. • • • R123 U19 IAP_IN 1 2 IA_IN IAN_IN 1 2 J30 R115 600 Ohm f errite L21 R51 10.0 R50 3.4 DNP 600 Ohm f errite R49 3.4 DNP R53 3.4 DNP 499 6 7 C83 10,000pF C84 10,000pF 5 8 TMUX GND INP SN INN SP TEST VCC 4 3 750 DNP 750110056 4 3 1.08 : 1 2 1 6 * T8 1 * 71M6103-8SOIC R117 499 GND_R6000_A C23 1uF R121 L22 750 DNP R118 IA 0 DNP Figure 4-9: Input Circuit with Ferrites Page: 70 of 91 v5 71M6543 Demo Board User’s Manual 4.4 71M6543 DEMO BOARD REV 4.0 BILL OF MATERIAL Table 4-1: 71M6543 REV 4.0 Demo Board: Bill of Material (1/2) Item Q Reference Part 1 2 BT1,BT2 BATTERY 2 1 BT3 BATTERY 3 1 4 7 8 9 10 11 12 23 C1,C8,C9,C11,C13,C14,C15, C36,C42,C43,C44,C48,C49, C50,C52,C53,C57,C58,C61, C65,C67,C68,C69 1 C2 18 C3,C5,C18,C19,C20,C21, C22,C26,C27,C28,C51,C60, C62,C63,C64,C66,C74,C77 4 C6,C7,C45,C47 3 C17,C34,C56 1 C24 1 C25 6 C29,C32,C37,C38,C40,C41 2 C30,C31 13 1 C35 2.2uF 14 1 C39 100uF 15 1 C46 0.03 uF 16 17 18 19 20 21 22 23 24 25 26 1 2 2 1 1 2 1 4 1 1 1 C54 C55,C59 C70,C71 C72 C73 D5,D6 D7 D8,D12,D13,D14 D9 D10 D17 0.1uF 100pF 0.1uF 0.01uF 4.7uF LED_1 LD274 S1J ES1J LED 1.5KE350A 27 5 JP1,J1,JP3,JP44,JP45 HDR3X1 28 1 JP2 HDR5X1 29 25 TP1,J3,JP4,JP5,JP6,JP7, 5 6 CN1 30 31 1 4 JP8,J11,J12,J13,J15,J16, J17,J18,J20,J22,J23,J24, J25,JP50,JP51,JP52,JP53, JP54,JP55 JP20 J4,J6,J8,J9 32 1 J14 33 1 J19 34 1 J21 35 7 36 37 38 8 1 1 L1,L11,L12,L13,L16,L17, L18 L2,L3,L4,L5,L6,L7,L9,L10 L8 Q1 39 3 RV1,RV2,RV3 Page: 71 of 91 Footprint Digi-Key P/N Mouser P/N Manufacturer Manufacturer P/N Tol Rating HDR DNP BAT 3 PIN BARREL COMBO BAT CR2032 MAX DNP DNP 806-KUSBVXBS1N-W USB-W USBV Kycon KUSBVX-BS1N-W 1000pF 603 445-1298-1-ND TDK C1608X7R2A102K 10% 100V 22uF 0.1uF SM/CT_3216 603 478-1663-1-ND 445-1314-1-ND AVX TDK TAJA226K010RNJ C1608X7R1H104K 10% 0.1 10V 50V 10uF 1uF 15pF 10pF 1000pF 22pF SM/CT_3216 603 603 603 603 603 CYL/D.400/LS. 200/.034 CYL/D.400/LS. 200/.034 HIGH VOLT DISC CAP 603 603 805 603 805 LED6513 LED6513 SMA/DIODE SMA/DIODE 805 DO-41 BLKCON.100/V H/TM1SQ/W.1 00/3 BLKCON.100/V H/TM1SQ/W.1 00/5 BLKCON.100/V H/TM1SQ/W.1 00/2 478-1654-1-ND 445-1604-1-ND 445-1271-1-ND 445-1269-1-ND 445-1298-1-ND 445-1273-1-ND AVX TDK TDK TDK TDK TDK TAJA106K010R C1608X7R1C105K C1608C0G1H150J C1608C0G1H100D C1608X7R2A102K C1608C0G1H220J 0.1 10% 5% 5% 10% 0.05 10V 16V 50V 50V 100V 50V 493-1227-ND Nichicon UVR2G2R2MPD P963-ND Panasonic ECE-A1AKS101 Vishay/BC 125LS30-R HDR2X1 SWITCHCRAFT FASTON RIBBON6513O ICE Header UTLINE BLKCON.100/V H/TM2OE/W.2 HDR5X2 00/10 BLKCON.100/V HDR8X2 H/TM2OE/W.2 00/16 Ferrite Bead 600oh805 SWITCHCRAFT Spade Terminal 0 Ohm 180uH BP103 VARISTOR 805 RFB0807 LED6513 MOV CPS 2381594 75-125LS30-R DNP 400V 20% 10V 1000V 445-1314-1-ND 445-1281-1-ND 478-3351-1-ND 478-1227-1-ND 587-1782-1-ND 67-1612-ND 475-1461-ND S1J-E3/61TGICT-ND ES1JFSCT-ND L62415CT-ND 1.5KE350CALFCT-ND TDK C1608X7R1H104K TDK C1608C0G1H101J AVX Corporatio 08055C104MAT2A AVX Corporatio 06035C103KAT2A Taiyo Yuden TMK212BJ475KG-T Lumex SSL-LX5093SRC/E Osram SFH 4511 Vishay/Genera S1J-E3/61T Vishay ES1J CML CMD17-21UGC/TR8 Littelfuse 1.5KE350CA S1011E-36-ND Sullins PBC36SAAN 0.1 S1011E-36-ND Sullins PBC36SAAN 0.2 S1011E-36-ND Sullins PBC36SAAN 0.1 SC237-ND A24747CT-ND Switchcraft Inc.RAPC712X Tyco/AMP 62395-1 A33555-ND 571-5-104068Tyco/AMP 1 0.1 5% 20% 0.1 0.1 50V 50V 50V 50V 25V DNP 5-104068-1 S2011E-36-ND Sullins PBC36DAAN 0.2 S2011E-36-ND Sullins PBC36DAAN 0.3 445-1556-1-ND TDK MMZ2012S601A 0.5A RMCF0805ZT0R00CT-ND Stackpole CoilCraft Osram RMCF0805ZT0R00 RFB0807-181L SFH 300-3/4 0.5A 475-1437-ND 594-2381-594AVX 55116 DNP 2381 594 55116 v5 71M6543 Demo Board User’s Manual Table 4-2: 71M6543 REV 4.0 Demo Board: Bill of Material (2/2) Item Q Reference Part Footprint Digi-Key P/N 40 41 2 1 R1,R2 R4 1K 100 541-1.0KACT-ND 541-100ACT-ND 42 3 R6,R7,R8 75K 43 44 45 46 47 48 49 50 51 6 2 5 1 3 1 1 2 10 62 100K 750 0 1K 8.06K 25.5K 3.4 3.4 52 53 3 6 R9,R10,R11,R15,R16,R17 R12,R13 R14,R33,R52,R54,R72 R18 R19,R106,R137 R20 R21 R24,R25 R26,R27,R28,R29,R30,R31, R32,R34,R35,R36 R38,R39,R58 R46,R47,R59,R60,R62,R64 805 805 AXLE FLAME UPRIGHT 603 603 805 1206 603 805 805 1206 1206 4.7K 270K RG20P4.7KBCT-ND RG20P270KBCT-ND TDK Susumu RG2012P-472-B-T5 RG2012P-274-B-T5 54 3 R61,R63,R66 2M Vishay/Dale RN65D2004FB14 55 3 R65,R73,R141 100 100W-2-ND Yageo RSF200JB-100R 56 57 5 8 10K 10K P10.0KHCT-ND 541-10KACT-ND Panasonic Vishay/Dale ERJ-3EKF1002V CRCW080510K0JNEA 58 59 60 61 62 1 2 6 3 6 100K 100 499 0 750 603 603 603 RES_TH_500 RES_TH_500 541-10KACT-ND P100GCT-ND P499HCT-ND 0.0EBK-ND Panasonic Panasonic Panasonic Yageo Xicon ERJ-3GEYJ104V ERJ-3GEYJ101V ERJ-3EKF4990V ZOR-12-B-52 270-750-RC 5% 5% 1% 1% 1% 63 64 65 66 67 1 1 2 1 3 R74,R103,R109,R142,R144 R76,R81,R82,R104,R105, R107,R108,R151 R77 R79,R150 R89,R90,R93,R94,R95,R96 R91,R100,R101 R92,R97,R98,R99,R102, R112 R110 R111 R138,R143 R139 R140,R146,R147 805 805 AXLE FLAME UPRIGHT AXLE FLAME UPRIGHT 603 805 2K 4.02K 10K 1.5 3.4K 603 603 603 1206 805 AXLE FLAME UPRIGHT 1206 PB TESTPOINTSMA LL P2.00KHCT-ND P4.02KHCT-ND P10.0KHCT-ND 541-1.5ECT-ND 541-3.40KCCT-ND Panasonic Panasonic Panasonic Vishay/Dale Vishay/Dale ERJ-3EKF2001V ERJ-3EKF4021V ERJ-3EKF1002V CRCW12061R50JNEA CRCW08053K40FKEA 1% 0.1W 1% 0.1W 1% 0.1W 5% 0.25W 1% 0.125W 68 1 R148 820 69 70 2 3 R149,R152 SW3,SW4,SW5 68 PB 71 2 TP2,TP3 TESTPOINT 72 3 T4,T5,T6 750110056 XFORM/56 6543 73 1 U1 TL431 SO8-NARROW 74 1 U2 75 76 1 1 U3 U4 77 1 U5 78 79 80 81 82 1 1 1 3 1 U6 U8 U9 U15,U16,U17 Y1 Page: 72 of 91 32QFNW/NO FT232RQ SPT SO8-NARROW ADUM3201 SO8-NARROW SER EEPROM IC149 71M6543-100TQFP 100TQFP_SS SO8-NARROW LNK304-TN LCD VLS-6648 LCD VLS-6648 SER EEPROM (uWireSO8-NARROW 71M6103-8SOIC SO8-NARROW 32.768KHz XTAL-ECS-39 Mouser P/N Manufacturer Manufacturer P/N Tol Vishay/Dale Vishay/Dale CRCW08051K00JNEA CRCW0805100RJNEA 5% 0.125W 5% 0.125W 75KW-2-ND Yageo RSF200JB-75K P62GCT-ND P100KGCT-ND RR12P750DCT-ND RHM0.0ECT-ND P1.00KHCT-ND RHM8.06KCCT-ND P25.5KCCT-ND 541-3.40FFCT-ND 541-3.40FFCT-ND Panasonic ERJ-3GEYJ620V Panasonic ERJ-3GEYJ104V Susumu RR1220P-751-D Rohm SemicondMCR18EZHJ000 Panasonic ERJ-3EKF1001V Rohm MCR10EZHF8061 Panasonic ERJ-6ENF2552V Vishay/Dale CRCW08053R40FNEA Vishay/Dale CRCW08053R40FNEA 71-RN65D-F2.0M 270-750-RC Rating HDR DNP 5% 2W DNP 5% 5% 0.01 0.05 1% 1% 1% 1% 0.01 0.1W 0.1W 0.1W 0.25W 0.1W 0.125W 0.125W 0.125W 0.125W DNP 0% 0.125W 0% 0.125W 0.01 0.5W 5% 2W 0.01 0.1W 5% 0.125W 0.1W 0.1W 0.1W 0.1W 0.1W P820W-2BK-ND Panasonic ERG2SJ821 5% P68.0FTR-ND P13598SCT-ND Panasonic Panasonic ERJ-8ENF68R0V EVQ-PNF05M 1% 0.25W 5011K-ND KEYSTONE 5011 Midcom 750110056 296-1288-1-ND Kycon 93LC76C-I/SN-ND DNP 2W KUSBVX-BS1N-W Analog Devices ADUM3201ARZ ATMEL AT24C1024BW-SH25-B Teridian 596-1237-1-ND DNP DNP Texas Instrume TL431AIDR 806-KUSBVXBS1N-W ADUM3201ARZ-ND AT24C1024BW-SH25-B-ND DNP 71M6540F-IGT/F Power Integrat LNK304DG-TL VARITRONIX VL_6648_V00 MICROCHIP 93LC76CT-I/SN Maxim 71M6103-IL/F Suntsu SPC6-32.768KHZ TR v5 71M6543 Demo Board User’s Manual 4.5 71M6543 DEMO BOARD REV 5.0 BILL OF MATERIAL Table 4-3: 71M6543 REV 5.0 Demo Board: Bill of Material (1/3) Item Q Reference Part 1 2 BT1,BT2 BATTERY 2 1 BT3 BATTERY 3 4 1 CN1 USB-B 23 C1,C8,C9,C11,C13,C14,C15, 1000pF C29,C32,C36,C37,C38,C40, C41,C42,C44,C49,C50,C52,C53, C57,C61 1 C2 22uF 18 C3,C5,C18,C19,C20,C21, 0.1uF C22,C26,C27,C28,C51,C60, C62,C63,C64,C66,C74,C77 4 C6,C7,C45,C47 10uF 3 C17,C34,C56 1uF 1 C24 15pF 1 C25 10pF 2 C30,C31 22pF 6 C48,C58,C65, 1000pF C67,C68,C69 5 6 7 8 9 10 11 12 13 1 C35 2.2uF 14 1 C39 100uF 15 1 C46 0.03 uF 16 17 18 19 20 21 22 23 24 25 26 1 2 2 1 1 2 1 4 1 1 1 C54 C55,C59 C70,C71 C72 C73 D5,D6 D7 D8,D12,D13,D14 D9 D10 D17 0.1uF 100pF 0.1uF 0.01uF 4.7uF LED_1 LD274 S1J ES1J LED 1.5KE350A 27 5 JP1,J1,JP3,JP44,JP45 HDR3X1 28 1 JP2 HDR5X1 29 25 TP1,J3,JP4,JP5,JP6,JP7, 30 31 1 4 JP8,J11,J12,J13,J15,J16, J17,J18,J20,J22,J23,J24, J25,JP50,JP51,JP52,JP53, JP54,JP55 JP20 J4,J6,J8,J9 32 1 J14 33 1 J19 34 1 J21 35 36 37 15 L1,L2,L3,L4,L5,L6,L7,L9, L10,L11,L12,L13,L16,L17, L18 1 L8 1 Q1 38 3 RV1,RV2,RV3 Page: 73 of 91 HDR2X1 Footprint 445-1298-1-ND SM/CT_3216 603 478-1663-1-ND 445-1314-1-ND SM/CT_3216 603 603 603 603 603 CYL/D.400/LS. 200/.034 CYL/D.400/LS. 200/.034 HIGH VOLT DISC CAP 603 603 805 603 805 LED6513 LED6513 SMA/DIODE SMA/DIODE 805 DO-41 BLKCON.100/V H/TM1SQ/W.1 00/3 BLKCON.100/V H/TM1SQ/W.1 00/5 BLKCON.100/V H/TM1SQ/W.1 00/2 SWITCHCRAFT FASTON RIBBON6513O ICE Header UTLINE BLKCON.100/V H/TM2OE/W.2 HDR5X2 00/10 BLKCON.100/V HDR8X2 H/TM2OE/W.2 00/16 Ferrite Bead 600oh805 SWITCHCRAFT Spade Terminal 180uH BP103 VARISTOR Digi-Key P/N BAT 3 PIN BARREL COMBO BAT CR2032 MAX USBV 603 RFB0807 LED6513 MOV CPS 2381594 Mouser P/N Manufacturer Manufacturer P/N Tol Rating HDR DNP DNP DNP 806-KUSBVX-BS1Kycon TDK KUSBVX-BS1N-W C1608X7R2A102K 10% 100V AVX TDK TAJA226K010RNJ C1608X7R1H104K 10% 0.1 10V 50V 478-1654-1-ND 445-1604-1-ND 445-1271-1-ND 445-1269-1-ND 445-1273-1-ND 445-1298-1-ND AVX TDK TDK TDK TDK TDK TAJA106K010R C1608X7R1C105K C1608C0G1H150J C1608C0G1H100D C1608C0G1H220J C1608X7R2A102K 0.1 10% 5% 5% 5% 0.1 10V 16V 50V 50V 50V 100V 493-1227-ND Nichicon UVR2G2R2MPD P963-ND Panasonic ECE-A1AKS101 Vishay/BC 125LS30-R 75-125LS30-R DNP DNP 400V 0.2 10V 1000V 445-1314-1-ND 445-1281-1-ND 478-3351-1-ND 478-1227-1-ND 587-1782-1-ND 67-1612-ND 475-1461-ND RS1J-E3/61TGICT-ND ES1JFSCT-ND L62415CT-ND 1.5KE350CALFCT-ND TDK C1608X7R1H104K TDK C1608C0G1H101J AVX Corporatio 08055C104MAT2A AVX Corporatio 06035C103KAT2A Taiyo Yuden TMK212BJ475KG-T Lumex SSL-LX5093SRC/E Osram SFH 4511 Vishay/Genera S1J-E3/61T Vishay ES1J CML CMD17-21UGC/TR8 Littelfuse 1.5KE350CA S1011E-36-ND Sullins PBC36SAAN 0.1 S1011E-36-ND Sullins PBC36SAAN 0.2 S1011E-36-ND Sullins PBC36SAAN 0.1 SC237-ND A24747CT-ND Switchcraft Inc.RAPC712X Tyco/AMP 62395-1 A33555-ND 571-5-104068Tyco/AMP 1 10% 5% 0.2 0.1 0.1 50V 50V 50V 50V 25V DNP 5-104068-1 S2011E-36-ND Sullins PBC36DAAN 0.2 S2011E-36-ND Sullins PBC36DAAN 0.3 445-1556-1-ND TDK MMZ2012S601A 475-1437-ND CoilCraft Osram RFB0807-181L SFH 300-3/4 594-2381-594AVX 55116 0.5A DNP 2381 594 55116 v5 71M6543 Demo Board User’s Manual Table 4-4: 71M6543 REV 5.0 Demo Board: Bill of Material (2/3) Item Q Reference Part Footprint Digi-Key P/N 39 40 2 1 R1,R2 R4 1K 100 541-1.0KACT-ND 541-100ACT-ND 41 3 R6,R7,R8 75K 42 43 44 45 46 47 48 6 2 5 1 3 1 1 R9,R10,R11,R15,R16,R17 R12,R13 R14,R33,R52,R54,R72 R18 R19,R106,R137 R20 R21 62 100K 750 0 1K 8.06K 25.5K 805 805 AXLE FLAME UPRIGHT 603 603 805 1206 603 805 805 49 12 R24,R25,R26,R27,R28,R29, 5.1 MELF 50 51 3 6 R30,R31,R32,R34,R35,R36 R38,R39,R58 R46,R47,R59,R60,R62,R64 4.7K 270K RG20P4.7KBCT-ND RG20P270KBCT-ND 52 3 R61,R63,R66 2M 53 3 R65,R73,R141 100 100W-2-ND Yageo RSF200JB-100R 54 10K P10.0KHCT-ND Panasonic ERJ-3EKF1002V 10K 805 541-10KACT-ND Vishay/Dale CRCW080510K0JNEA 5% 0.125W 100K 100 0 750 603 603 RES_TH_500 RES_TH_500 541-10KACT-ND P100GCT-ND 0.0EBK-ND Panasonic Panasonic Yageo Xicon ERJ-3GEYJ104V ERJ-3GEYJ101V ZOR-12-B-52 270-750-RC 5% 5% 1% 1% 60 61 62 63 64 12 R74,R89,R90,R93,R94,R95, R96,R103,R107,R109,R142, R144 7 R76,R81,R82,R104,R105, R108,R151 1 R77 2 R79,R150 3 R91,R100,R101 6 R92,R97,R98,R99,R102, R112 1 R110 1 R111 2 R138,R143 1 R139 3 R140,R146,R147 805 805 AXLE FLAME UPRIGHT AXLE FLAME UPRIGHT 603 2K 4.02K 10K 1.5 3.4K P2.00KHCT-ND P4.02KHCT-ND P10.0KHCT-ND 541-1.5ECT-ND 541-3.40KCCT-ND Panasonic Panasonic Panasonic Vishay/Dale Vishay/Dale ERJ-3EKF2001V ERJ-3EKF4021V ERJ-3EKF1002V CRCW12061R50JNEA CRCW08053K40FKEA 1% 0.1W 1% 0.1W 1% 0.1W 5% 0.25W 1% 0.125W 65 1 R148 820 66 67 2 3 R149,R152 SW3,SW4,SW5 68 PB 603 603 603 1206 805 AXLE FLAME UPRIGHT 1206 PB 68 2 TP2,TP3 TESTPOINT 69 3 T4,T5,T6 750110056 70 1 U1 SO8-NARROW 32QFNW/NO FT232RQ SPT SO8-NARROW ADUM3201 SO8-NARROW SER EEPROM IC149 71M6543-100TQFP 100TQFP_SS SO8-NARROW LNK304-TN LCD VLS-6648 LCD VLS-6648 SER EEPROM (uWireSO8-NARROW 71M6103-8SOIC SO8-NARROW 32.768KHz XTAL-ECS-39 55 56 57 58 59 71 1 U2 72 73 1 1 U3 U4 74 1 U5 75 76 77 78 79 1 1 1 3 1 U6 U8 U9 U15,U16,U17 Y1 Page: 74 of 91 TL431 Mouser P/N Manufacturer Manufacturer P/N Tol Vishay/Dale Vishay/Dale CRCW08051K00JNEA CRCW0805100RJNEA 5% 0.125W 5% 0.125W 75KW-2-ND Yageo RSF200JB-75K P62GCT-ND P100KGCT-ND RR12P750DCT-ND RHM0.0ECT-ND P1.00KHCT-ND RHM8.06KCCT-ND P25.5KCCT-ND Panasonic ERJ-3GEYJ620V Panasonic ERJ-3GEYJ104V Susumu RR1220P-751-D Rohm SemicondMCR18EZHJ000 Panasonic ERJ-3EKF1001V Rohm MCR10EZHF8061 Panasonic ERJ-6ENF2552V 71SMM02040C5 Vishay/Dale 108FB30 71-RN65D-F2.0M 270-750-RC SMM02040C5108FB30 TDK Susumu RG2012P-472-B-T5 RG2012P-274-B-T5 Vishay/Dale RN65D2004FB14 Rating HDR DNP 5% 2W 5% 0.05 0.01 5% 1% 1% 1% 0.1W 0.1W 0.1W 0.25W 0.1W 0.125W 0.125W 0.01 0.125W 0% 0.125W 0% 0.125W 0.01 0.5W 5% 2W 0.01 0.1W 0.1W 0.1W 0.1W 0.1W P820W-2BK-ND Panasonic ERG2SJ821 5% P68.0FTR-ND P13598SCT-ND Panasonic Panasonic ERJ-8ENF68R0V EVQ-PNF05M 1% 0.25W TESTPOINTSMA 5011K-ND LL KEYSTONE 5011 XFORM/56 6543 Midcom 750110056 296-1288-1-ND 768-1008-1-ND FTDI Analog Devices ADUM3201ARZ ATMEL AT24C1024BW-SH25-B Teridian 93LC76C-I/SN-ND DNP DNP 2W DNP Texas Instrume TL431AIDR ADUM3201ARZ-ND AT24C1024BW-SH25-B-ND 596-1237-1-ND DNP FT232RQ-REEL 71M6540F-IGT/F Power Integrat LNK304DG-TL VARITRONIX VL_6648_V00 MICROCHIP 93LC76CT-I/SN Maxim 71M6103-IL/F Suntsu SPC6-32.768KHZ TR DNP v5 71M6543 Demo Board User’s Manual 4.6 71M6543 REV 4.0 DEMO BOARD PCB LAYOUT Figure 4-10: Teridian 71M6543 REV 4.0 Demo Board: Top View Page: 75 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-11: Teridian 71M6543 REV 4.0 Demo Board: Top Copper Page: 76 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-12: Teridian 71M6543 REV 4.0 Demo Board: Bottom View Page: 77 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-13: Teridian 71M6543 REV 4.0 Demo Board: Bottom Copper Page: 78 of 91 v5 71M6543 Demo Board User’s Manual 4.7 71M6543 REV 5.0 DEMO BOARD PCB LAYOUT Figure 4-14: Teridian 71M6543 REV 5.0 Demo Board: Top View Page: 79 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-15: Teridian 71M6543 REV 5.0 Demo Board: Top Copper Page: 80 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-16: Teridian 71M6543 REV 5.0 Demo Board: Bottom View Page: 81 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-17: Teridian 71M6543 REV 5.0 Demo Board: Bottom Copper Page: 82 of 91 v5 71M6543 Demo Board User’s Manual 4.8 DEBUG BOARD BILL OF MATERIAL Item Q Reference Value PCB Footprint P/N Manufacturer Vendor Vendor P/N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 1 1 2 4 1 1 1 4 2 1 1 1 2 5 1 4 4 2 2 C1-C3,C5-C10,C12-C23 C4 C11 D2,D3 JP1,JP2,JP3,JP4 J1 J2 J3 R1,R5,R7,R8 R2,R3 R4 R6 SW2 TP5,TP6 U1,U2,U3,U5,U6 U4 0.1uF 33uF/10V 10uF/16V, B Case LED HDR2X1 RAPC712 DB9 HEADER 8X2 10K 1K NC 0 PB Switch test point ADUM1100 MAX3237CAI spacer 4-40, 1/4" screw 4-40, 5/16" screw 4-40 nut 0805 1812 1812 0805 2x1pin C2012X7R1H104K TAJB336K010R TAJB106K016R LTST-C170KGKT PZC36SAAN RAPC712 A2100-ND PPTC082LFBN ERJ-6GEYJ103V ERJ-6GEYJ102V N/A ERJ-6GEY0R00V EVQ-PJX05M 5011 ADUM1100AR MAX3237CAI 2202K-ND PMS4400-0025PH PMS4400-0031PH HNZ440 TDK AVX AVX LITEON Sullins Switchcraft AMP Sullins Panasonic Panasonic N/A Panasonic Panasonic Keystone ADI MAXIM Keystone Building Fasteners Building Fasteners Building Fasteners Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key N/A Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key Digi-Key 445-1349-1-ND 478-1687-1-ND 478-1673-1-ND 160-1414-1-ND S1011-36-ND SC1152-ND A2100-ND S4208-ND P10KACT-ND P1.0KACT-ND N/A P0.0ACT-ND P8051SCT-ND 5011K-ND ADUM1100AR-ND MAX3237CAI-ND 2202K-ND H342-ND H343-ND H216-ND DB9 8x2pin 0805 0805 0805 0805 PB TP SOIC8 SOG28 Table 4-5: Debug Board: Bill of Material Page: 83 of 91 v5 71M6543 Demo Board User’s Manual 4.9 DEBUG BOARD SCHEMATICS V5_DBG C1 0.1uF V5_DBG GND_DBG R1 10K V5_DBG + C4 33uF, 10V RAPC712 TP5 TP C7 0.1uF GND_DBG V5_DBG SW2 DISPLAY SEL TP6 TP GND_DBG V5_DBG D2 R2 LED 1K 8 GND_DBG 7 DIO01_DBG 6 GND_DBG 5 VDD2 GND2 DOUT GND2 C6 0.1uF V3P3 DIO01 V3P3 GND C8 GND V5_DBG C11 10uF, 16V (B Case) GND_DBG 0.1uF 26 GND_DBG C14 0.1uF 232VP1 C17 0.1uF 232VN1 27 V+ U4 MAX3237CAI VCC NORMAL C1+ C1- 1 2 JP3 HDR2X1 4 V- C2+ C2- RX232 V5_DBG R4 NC R5 10K 8 9 11 13 14 T1OUT T2OUT T3OUT T4OUT T5OUT R1IN R2IN R3IN ENB SHDNB T1IN T2IN T3IN T4IN T5IN R1OUTBF R1OUT R2OUT R3OUT MBAUD NULL 5 6 7 10 12 15 1 2 JP4 HDR2X1 232C1P1 25 232C1M1 1 232C2P1 3 232C2M1 24 23 22 19 17 16 21 20 18 GND TX232 RS232 TRANSCEIVER 28 V5_DBG C19 0.1uF GND_DBG TXISO GND U5 GND_DBG GND_DBG 8 7 6 5 VDD2 GND2 DOUT GND2 VDD1 DIN VDD1 GND1 1 2 3 4 V3P3 UART_TX V3P3 GND GND ADUM1100 8 GND_DBG 7 DIO00_DBG 6 GND_DBG 5 VDD2 GND2 DOUT GND2 C22 0.1uF GND_DBG GND U6 V5_DBG GND_DBG 1 2 3 4 VDD1 DIN VDD1 GND1 VDD2 GND2 DOUT GND2 8 7 6 5 V3P3 GND UART_RX GND ADUM1100 1 2 3 4 VDD1 DIN VDD1 GND1 0.1uF V3P3 DIO00 V3P3 GND C12 GND ADUM1100 0.1uF C16 STATUS LEDs 0.1uF DIO00 DIO02 GND GND GND GND GND_DBG V5_DBG C20 0.1uF V5_DBG RXISO C23 0.1uF R8 10K LED 1K GND_DBG R7 10K D3 C10 GND U3 DIO00 C15 0.1uF C18 0.1uF 0.1uF C9 0.1uF R3 2 NULL V5_DBG GND_DBG C13 NORMAL JP2 HDR2X1 + V5_DBG 1 2 JP1 HDR2X1 1 2 TXPC 1 2 3 4 VDD1 DIN VDD1 GND1 ADUM1100 J2 RXPC 0.1uF V3P3 GND DIO02 GND GND U2 DIO01 DB9_RS232 GND_DBG 8 7 6 5 VDD2 GND2 DOUT GND2 V5_DBG C5 0.1uF GND_DBG 5 9 4 8 3 7 2 6 1 VDD1 DIN VDD1 GND1 ADUM1100 C3 0.1uF GND_DBG GND_DBG GND 1 2 3 GND 5Vdc EXT SUPPLY J1 1 2 3 4 C2 GND U1 C21 0.1uF J3 1 3 5 7 9 11 13 15 2 4 6 8 10 12 14 16 DIO01 V3P3 CKTEST TMUXOUT UART_TX UART_RX_T GND_DBG V5_DBG HEADER 8X2 UART_RX_T DEBUG CONNECTOR R6 0 GND_DBG Figure 4-18: Debug Board: Electrical Schematic Page: 84 of 91 v5 71M6543 Demo Board User’s Manual 4.10 OPTIONAL DEBUG BOARD PCB LAYOUT Figure 4-19: Debug Board: Top View Figure 4-20: Debug Board: Bottom View Page: 85 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-21: Debug Board: Top Signal Layer Figure 4-22: Debug Board: Middle Layer 1 (Ground Plane) Page: 86 of 91 v5 71M6543 Demo Board User’s Manual Figure 4-23: Debug Board: Middle Layer 2 (Supply Plane) Figure 4-24: Debug Board: Bottom Trace Layer Page: 87 of 91 v5 71M6543 Demo Board User’s Manual 4.11 71M6543 PIN-OUT INFORMATION Power/Ground/NC Pins: Table 4-6: 71M6543 Pin Description Table 1/3 Name Type GNDA GNDD P P V3P3A P V3P3SYS P V3P3D O VDD O VLCD O VBAT P VBAT_RTC P Description Analog ground: This pin should be connected directly to the ground plane. Digital ground: This pin should be connected directly to the ground plane. Analog power supply: A 3.3 V power supply should be connected to this pin. V3P3A must be the same voltage as V3P3SYS. System 3.3 V supply. This pin should be connected to a 3.3 V power supply. Auxiliary voltage output of the chip. In mission mode, this pin is connected to V3P3SYS by the internal selection switch. In BRN mode, it is internally connected to VBAT. V3P3D is floating in LCD and sleep mode. A bypass capacitor to ground should not exceed 0.1 µF. The output of the 2.5V regulator. This pin is powered in MSN and BRN modes. A 0.1 µF bypass capacitor to ground should be connected to this pin. The output of the LCD DAC. A 0.1 µF bypass capacitor to ground should be connected to this pin. Battery backup pin to support the battery modes (BRN, LCD). A battery or super-capacitor is to be connected between VBAT and GNDD. If no battery is used, connect VBAT to V3P3SYS. RTC and oscillator power supply. A battery or super-capacitor is to be connected between VBAT and GNDD. If no battery is used, connect VBAT_RTC to V3P3SYS. Analog Pins: Table 4-7: 71M6543 Pin Description Table 2/3 Name Type IAP/IAN, IBP/IBN, ICP/ICN IDP/IDN I VA, VB, VC I VREF O XIN XOUT I O Description Differential or single-ended Line Current Sense Inputs: These pins are voltage inputs to the internal A/D converter. Typically, they are connected to the outputs of current sensors. Unused pins must be tied to V3P3A. Pins IBP/IBN, ICP/ICN, and IDP/IDN may be configured for communication with the remote sensor interface (71M6x0x). Line Voltage Sense Inputs: These pins are voltage inputs to the internal A/D converter. Typically, they are connected to the outputs of resistor dividers. Unused pins must be tied to V3P3A. Voltage Reference for the ADC. This pin should be left unconnected (floating). Crystal Inputs: A 32 kHz crystal should be connected across these pins. Typically, a 15 pF capacitor is also connected from XIN to GNDA and a 10 pF capacitor is connected from XOUT to GNDA. It is important to minimize the capacitance between these pins. See the crystal manufacturer datasheet for details. If an external clock is used, a 150 mV (p-p) clock signal should be applied to XIN, and XOUT should be left unconnected. Pin types: P = Power, O = Output, I = Input, I/O = Input/Output Page: 88 of 91 v5 71M6543 Demo Board User’s Manual Digital Pins: Table 4-8: 71M6543 Pin Description Table 3/3 Name Type COM3,COM2, COM1,COM0 O SEGDIO0 … SEGDIO45 I/O SEGDIO26/ COM5, SEGDIO27/ COM4 SEGDIO36/ SPI_CSZ, SEGDIO37/ SPI_DO, SEGDIO38/ SPI_DI, SEGDIO39/ SPI_CKI SEGDIO51/ OPT_TX, SEGDIO55/ OPT_RX E_RXTX/SEG48 E_RST/SEG50 E_TCLK/SEG49 I/O Description LCD Common Outputs: These 4 pins provide the select signals for the LCD display. Multi-use pins, configurable as either LCD segment driver or DIO. Alternative functions with proper selection of associated I/O RAM registers are: SEGDIO0 = WPULSE SEGDIO1 = VPULSE SEGDIO2 = SDCK SEGDIO3 = SDATA SEGDIO6 = XPULSE SEGDIO7 = YPULSE Unused pins must be configured as outputs or terminated to V3P3/GNDD. Multi-use pins, configurable as either LCD segment driver or DIO with alternative function (LCD common drivers). I/O Multi-use pins, configurable as either LCD segment driver or DIO with alternative function (SPI interface). I/O Multi-use pins, configurable as either LCD segment driver or DIO with alternative function (optical port/UART1) I/O O ICE_E I TMUXOUT/ SEG47, TMUX2OUT/ SEG46 O RESET I RX I TX O TEST I PB I NC N/C Multi-use pins, configurable as either emulator port pins (when ICE_E pulled high) or LCD segment drivers (when ICE_E tied to GND). ICE enable. When zero, E_RST, E_TCLK, and E_RXTX become SEG50, SEG49, and SEG48 respectively. For production units, this pin should be pulled to GND to disable the emulator port. Multi-use pins, configurable as either multiplexer/clock output or LCD segment driver using the I/O RAM registers. Chip reset: This input pin is used to reset the chip into a known state. For normal operation, this pin is pulled low. To reset the chip, this pin should be pulled high. This pin has an internal 30 μA (nominal) current source pull-down. No external reset circuitry is necessary. UART0 input. If this pin is unused it must be terminated to V3P3D or GNDD. UART0 output. Enables Production Test. This pin must be grounded in normal operation. Push button input. This pin must be at GNDD when not active or unused. A rising edge sets the IE_PB flag. It also causes the part to wake up if it is in SLP or LCD mode. PB does not have an internal pull-up or pull-down resistor. Do not connect this pin. Pin types: P = Power, O = Output, I = Input, I/O = Input/Output, Page: 89 of 91 v5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Teridian 71M6543F 71M6543H 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 XIN NC NC GNDA VBAT_RTC VBAT V3P3SYS IBP IBN ICP ICN IDP IDN GNDD V3P3D VDD ICE_E E_RXTX/SEG48 E_TCLK/SEG49 E_RST/SEG50 RX TX OPT_TX/SEGDIO51 SEGDIO52 SEGDIO53 NC SEGDIO17 SEGDIO16 SEGDIO15 SEGDIO14 SEGDIO13 SEGDIO12 SEGDIO11 SEGDIO10 SEGDIO9 SEGDIO8/DI SEGDIO7/YPULSE SEGDIO6/XPULSE SEGDIO5 NC SEGDIO4 SEGDIO3/SDATA SEGDIO2/SDCK SEGDIO1/VPULSE SEGDIO0/WPULSE OPT_RX/SEGDIO55 SEGDIO54 NC NC NC 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SPI_DI/SEGDIO38 SPI_DO/SEGDIO37 SPI_CSZ/SEGDIO36 SEGDIO35 SEGDIO34 SEGDIO33 SEGDIO32 SEGDIO31 SEGDIO30 SEGDIO29 SEGDIO28 COM0 COM1 COM2 COM3 SEGDIO27/COM4 SEGDIO26/COM5 SEGDIO25 SEGDIO24 SEGDIO23 SEGDIO22 SEGDIO21 SEGDIO20 SEGDIO19 SEGDIO18 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 SPI_CKI/SEGDIO39 SEGDIO40 SEGDIO41 SEGDIO42 SEGDIO43 SEGDIO44 SEGDIO45 TMUX2OUT/SEG46 TMUXOUT/SEG47 RESET PB VLCD VREF IAP IAN V3P3A VA VB VC TEST GNDA NC NC NC XOUT 71M6543 Demo Board User’s Manual Figure 4-25: 71M6543, LQFP100: Pin-out (top view) Page: 90 of 91 v5 71M6543 Demo Board User’s Manual 4.12 REVISION HISTORY Revision Date Description 2.0 02-19-2010 Initial release based on DBUM revision 1.0 for 6543 REV 1.0 Demo Board. 2.1 02-23-2010 2.2 03-01-2010 2.3 03-04-2010 Minor corrections. Added more figures illustrating shunt arrangements. Specified type of Remote Sensor used on REV 2.0 board (71M6113 or 71M6203). Improved Table 1-9. Added description for i_max2 variable used to control neutral current. Improved page layout. Changed type of Remote Sensor Interface from 71M6113 to 71M6103. Updated schematics and BOM of the REV 2.0 Demo Board. 2.4 06-16-2010 2.5 06-21-2010 3.0 07-26-2010 3.1 08-10-2010 3.2 12-10-2010 4.0 02-16-2011 4.1 03-28-2011 4.2 05-06-2011 5 Page: 91 of 91 7/2012 Corrected “X” factor for WRATE calculation to 0.09375. Changed section on shunt arrangement. Improved description on temperature compensation. Added Figure 1.7 and section 1.10.7. Added part numbers for shunt resistors. Added documentation for 6543 REV 3.0 Demo Board. Updated calibration spread sheets. Fixed display of calibration spread sheets in PDF file. Replaced Teridian Logo with Maxim Logo. Updated information on temperature compensation and on Demo Board revision 3.0. Updated to match board revisions 4.0 and 5.0. Removed information on older board revisions (3.0). Added comments on schematics. Updated schematics and BOM for DB6543 REV5.0. Added explanation and table of Demo Code versions. Added explanation on technique to avoid cross-talk between shunt resistors. Corrected addresses for auto-calibration parameter in CLI table. Corrected entries in table 1-11 (meter accuracy classes). Changed color for all table headings from yellow to gray. Corrected formula in 2.3.3.1. Removed text stating that the Demo Code and documents/tools are delivered on a CD-ROM in the kit. Added attribute ‘optional’ for all references to the ‘Debug Board’. Added USB Interface Module as part of Demo Kit Contents. Added text stating that spreadsheets are available on the Maxim web site. Updated graphs and text in Serial Connection Setup (1.7.4) and updated Demo Code version in Compatibility (1.5). Updated images for calibration spreadsheets and changed description of calibration to reflect the usage of LCOMP2_n coefficients used in newer codes. Added section 1.10.8 (Bootloader Feature). v5