STPM01

STPM01 PROGRAMMABLE SINGLE PHASE ENERGY METERING IC WITH TAMPER DETECTION PRELIMINARY DATA s s s s s s s s s s INTEGRATED LINEAR VREGS TO SUPPLY THE DIGITAL AND ANALOG CORES ADVANCED BICMOS TECHNOLOGY FOR HIGH PERFORMANCE OTP FOR CALIBRATION AND CONFIGURATION INTEGRATED OSCILLATOR WITH EXTERNAL RESISTOR OR CRYSTAL MONITOR BOTH LIVE AND NEUTRAL FOR TAMPER DETECTION SIGMA DELTA 1st ORDER CONVERTER POWER SUPPLY CURRENT LESS THAN 6mA SUPPORT 50 ÷ 60 Hz – IEC 62052-11, IEC 62053-2X SPECIFICATION FOR CLASS 0.5 AC WATT METERS PRECISION VOLTAGE REFERENCE ON CHIP: 1.25 V AND 30 ppm/°C MAX TSSOP20 PACKAGE TSSOP DESCRIPTION The STPM01 is designed for effective measurement of active energy in a power line system using the Rogowski and/or Shunt principle. This device can be implemented as a single chip 1-phase energy meter or as a peripheral measurement in a microprocessor based 1-phase or 3-phase energy meter. The STPM01 consists, essentially, of two parts: the analog part and the digital part. The former, is composed by preamplifier and 1st order ΣD AD converter blocks, Bandgap voltage reference, Lowdrop voltage regulator and a pair of DC buffer, the latter, is composed by system control, clock generator, hard wired DSP and SPI interface. There is also a OTP block, which is controlled Table 1: Order Codes Type STPM01 Temperature Range -40 to 85 °C through the SPI by means of a dedicated command set. The configured bits are used for testing, configuration and calibration purpose. From a pair of ΣD output signals coming from analog section, a DSP unit computes the amount of consummated active, reactive and apparent energy, RMS values of voltage and current value. The results of computation are available as pulse frequency and states on the digital outputs of the device or as data bits in a data stream, which can be read from the device by means of SPI interface. This system bus interface is used also during production testing of the device and/or for temporary or permanent programming of bits of internal OTP. In the STPM01 the calibration is very easy: an output signal with pulse frequency proportional to energy is generated, this signal is used to enable the calibration of the energy meter. When the device is fully configured and calibrated, a dedicated bit of OTP block, can be written permanently in order to prevent accidental entering into some test mode or changing any configuration. Package TSSOP20 (Tape & Reel) Comments 2500 parts per reel September 2004 Rev. 1 1/9 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. STPM01 Figure 1: Pin Configuration Table 2: Pin Description PlN N° SYMBOL NAME AND FUNCTION Motor pulse outputs. These outputs are used to driver in impulse counter or a stepper motor. They can also be used for reactive energy pulses LED indicator, or for output Σ∆ signal of analog current/voltage channel respectively, or for test mode i/o Σ∆ signal for analog current/ voltage channel respectively Chip select - data transmission enable: a falling edge in this pin places the device in communication mode. Bringing SCS high places the serial bus in high impedance Output of internal LowDrop regulator and power supply for digital core Ground: this pin provides a supply return and analog signal reference level. Positive Power Supply. Typically +5V Power for programming OTP cells Output of internal LowDrop regulator and power supply for analog core and OTP cells Analog input: +and – current (respectively) channel 1 Analog input: +and – current (respectively) channel 2 Analog input: +and – voltage (respectively) intended for use with the voltage transducer Select data in or data out on SDA or Measurement latching for transmission or output for negative power Input of internal crystal oscillator or input for external measure clock or current setting input for internal RC oscillator Output of internal RC or crystal oscillator Serial clock input for the synchronous serial interface or for No Load Condition Led indicator Serial Data. Send and receiver data synchronous within CLK, or Tamper Detected Led indicator Signal for active energy pulses LED indicator or signal of analog current channel multiplex (available only when used as peripheral and if Σ∆ signal outputs are selected) 1, 2 MON, MOP 3 4 5 6 7 8 9, 10 11, 12 13, 14 15 16 17 18 19 20 SCS VDDD VSS VCC VOTP VDDA IIP1, IIN1 IIP2, IIN2 VIP, VIN SYN CLKIN CLKOUT SCL/NLC SDA/TD LED 2/9 STPM01 Figure 2: Block Diagram V CC IIP1 IIN1 IIP2 I IN2 V IP V IN O S C I L L A T O R MUX 2:1 Digital Processing and Power Calculation V DDD VSS 2 x Sigma Delta ADC & Analog Processing Serial Interface SPI SYN CLKIN Voltage Reference and Power - on Reset Power to pulse rate CLKOUT 56 bit OTP V DDA V OTP LED Table 3: Absolute Maximum Ratings Symbol VCC IPIN TA Supply Voltage Current on any pin Operating Temperature Range Parameter Value -0.3 to 6 ± 150 -40 to +85 Unit V mA °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Table 4: Electrical Characteristics (Typical values are at TA = 25°C, and VCC = 5V) Symbol VCC ICC POR VDDA VDDD F fclk VPRG IPRG tPRG Parameter Supply Voltage Positive Supply Current Positive Power On Reset on VCC Analog Supply Voltage Digital core power supply Nominal Line frequency Clock frequency OTP Programming Level OTP Programming Current OTP Programming Time 100 2 14 2.5 300 No Calibration 4MHz, VCC = 5V 8MHz, VCC = 5V 2.5 3 ± 5% 1.5 ± 5% 50/60 ± 5% 10 20 Test Conditions Min. 3.165 Typ. Max. 5.5 4 6 V V V Hz MHz V mA µs Unit V mA 3/9 STPM01 Table 5: Analog Inputs Characteristics (IIP1, IIN1, IIP2, IIN2, VIP, VIN TO VSS) (Typical values are at TA = 25°C, and VCC = 5V) Symbol VMAX fBAND VOFF ZIN ZIN GER ILEAK Parameter Maximum Signal Levels Bandwidth Offset Impedance of VIP, VIN Impedance of IIP, IIN Gain Error Leakage Current -1 100 100 ±10 1 Test Conditions Min. -0.2 10 ±20 400 Typ. Max. 0.2 Unit V KHz mV KΩ KΩ % µA Table 6: Digital I/O Characteristics (SDA, CLKIN, CLKOUT, SCS, SYN, LED) (Typical values are at TA = 25°C, and VCC = 5V) Symbol VIH VIL VOH VOL ILEAK tTR Parameter Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage Pull up Current Transition time CL = 50 pF IO = -2 mA IO = 2 mA 15 10 Test Conditions Min. 0.75VCC -0.3 VCC-0.4 0.4 Typ. Max. VCC+0.2 0.25VCC Unit V V V V µA ns Table 7: Power I/O Characteristics (MOP, MON) (VCC = 5V, VSS = GND, TA = -40 to 85°C, unless otherwise specified. Typical values are at TA = 25°C) Symbol VOH VOL tTR Parameter Output High Voltage Output Low Voltage Transition time Test Conditions IO = -14 mA IO = 14 mA CL = 50 pF 5 10 Min. VCC-0.5 0.5 Typ. Max. Unit V V µs Table 8: Crystal Connection (Typical values are at TA = 25°C, and VCC = 5V) Symbol Parameter Test Conditions Min. 0.8VDD 0 Typ. Max. VDD 0.3VDD ±1 1 22 4 8 40 4.194 8.192 60 4 Unit V V µA MΩ pF MHz µA VIH(CLKIN) High level input voltage on CLKIN VIL(CLKIN) Low level input voltage on CLKIN II Input current on CLKIN RP CP fCLKOUT ICLKIN External Resistor External Capacitors Nominal frequency Settling current (RC Oscillator) fCLKOUT = 4 MHz 4/9 STPM01 Table 9: On Chip Reference (Typical values are at TA = 25°C, and VCC = 5V) Symbol TC VGB Parameter Temperature Coefficient Analog Reference Voltage Test Conditions After Calibration Min. Typ. 30 1.23±1% Max. 50 Unit ppm/°C V Table 10: SPI Interface Timings (Typical values are at TA = 25°C, and VCC = 5V) Symbol FSCLKr FSCLKw tDS tDH tON tOFF tSYN Parameter Data read speed Data write speed Data setup time Data hold time Data driver on time Data driver off time SYN active width 2/fCLK 20 0 20 20 Test Conditions Min. Typ. Max. 32 100 Unit MHz KHz ns ns ns ns ns 5/9 STPM01 TSSOP20 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0˚ 0.45 0.60 0.05 0.8 0.19 0.09 6.4 6.2 4.3 6.5 6.4 4.4 0.65 BSC 8˚ 0.75 0˚ 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 0.252 0.173 0.0256 BSC 8˚ 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.260 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0087225C 6/9 STPM01 Tape & Reel TSSOP20 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 6.9 1.7 3.9 11.9 12.8 20.2 60 22.4 7 7.1 1.9 4.1 12.1 0.268 0.272 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.280 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch 7/9 STPM01 Table 11: Revision History Date 28-Sep-2004 Revision 1 Preliminary Data. Description of Changes 8/9 STPM01 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. 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