BT-21

Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Product Specification Features Bluetooth Radio Fully embedded Bluetooth v2.0 Serial Profile Class 2 radio Complete RF ready module Wireless data communications Integrated chip antenna 128-bit encryption security Range up to 30m LOS FCC & Bluetooth qualified ST Micro ARM7 microprocessor up to 50MHz Memory 256K bytes flash memory 64K bytes RAM memory Data Rate 2M bps maximum data rate Multipoint capability Serial Interface UART, up to 480K baud (up to 3.25M baud on BT21.2) Buffered SPI interface I2C interface USB v2.0 General I/O 14 general purpose I/O 4x12-bit A/D inputs User Interface AT command set 15mm x 27mm Description One of the most capable Bluetooth modules available, the BT-21 Bluetooth OEM Module is designed for maximum flexibility. The BT-21 module includes 14 general purpose input/output lines, several serial interface options, analog-to-digital inputs, and up to 2M bps data throughput. The BT-21 is a surface mount PCB module that provides fully embedded, ready to use Bluetooth wireless technology. The reprogrammable flash memory contains embedded firmware for serial cable replacement using the Bluetooth SPP profile. Other popular Bluetooth profiles, such as OBEX, are also available. Customized firmware for peripheral device interaction, power optimization, security, and other proprietary features may be supported and can be ordered pre-loaded and configured. - Additional Documentation BT Hardware Design Guide abSerial User Guide abSerial Reference Guide ©2008 Amp’ed RF Inc 1 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 1 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Software Architecture Lower Layer Stack Full Bluetooth v2.0 data rate (3M bps maximum) Device power modes—active, sleep and deep sleep Wake on Bluetooth feature—optimized power consumption of host CPU Authentication and encryption Encryption key length from 8-bits to 128-bits maximum Persistent FLASH memory—for BD Address and radio parameter storage All ACL (Asynchronous Connection Less) packet types (DM1, DH1, DM3, DH3, DM5, DH5, 2-DH1, 2-DH3, 2-DH5, 3-DH1 3-DH3, 3-DH5, AUX1) SCO (Synchronous Connection Oriented) packet types (HV1, HV2, HV3) Point to multipoint and scatternet support—3 master and 7 slave links allowed (10 active links simultaneously) Park, sniff, and hold modes—fully supported to maximum allowed intervals Master slave switch—supported during connection and post connection Dedicated Inquiry Access Code—for improved inquiry scan performance Dynamic packet selection—channel quality driven data rate to optimize link performance Dynamic power control—interference reduction and link performance Bluetooth test modes—per Bluetooth v2.0 specification 802.11b co-existence—AWMA and AFH Vendor specific HCI commands—to support device configuration and certification test modes Upper Layer Stack SPP, OBEX, SDAP, GAP, and DUN protocols RFComm, SDP, and L2CAP supported HCI Interface Bluetooth v2.0 specification compliant HCI UART transport layer (H4) Firmware upgrade over UART APPLICATIONS UPPER LAYER STACK EVENTS COMMANDS ARM7 CPU HCI LM BASEBAND RF HCI STACK FLASH MEMORY ©2008 Amp’ed RF Inc 2 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 2 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Hardware Specifications General Conditions (VIN= 3.0V and 25°C) Recommended Operating Conditions Rating Operating Temperature Range Supply Voltage VIN Signal Pin Voltage RF Frequency Min -20 2.8 2400 Typical 3.0 3.0 Max 80 3.4 2483.5 Unit °C Volts Volts MHz Absolute Maximum Ratings Rating Storage temperature range Supply voltage, VIN I/O pin voltage, VIO RF input power Min -55 -0.3 -0.3 Typical Max +150 + 3.6 + 4.0 -5 Unit °C Volts Volts dBm Current Consumption Modes Typical Power Consumption ACL data 115K Baud UART at max throughput (Master) ACL data 115K Baud UART at max throughput (Slave) Connection, no data traffic, master Connection, no data traffic, slave Connection in sniff (Tsniff=100ms), no data traffic, master Connection in sniff (Tsniff=100ms), no data traffic, slave Connection in sniff (Tsniff=375ms), no data traffic, master Connection in sniff (Tsniff=375ms), no data traffic, slave Standby, without deep sleep Standby, with deep sleep Page/Inquiry scan, deep sleep Avg 35.0 35.0 16.0 24.0 8.0 8.4 2.0 2.5 14.0 0.11 1.4 Unit mA mA mA mA mA mA mA mA mA mA mA ©2008 Amp’ed RF Inc 3 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 3 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 I/O Operating Characteristics Symbol VIL VIH VOL VOH IOL IOH RPU RPD Parameter Low-Level Input Voltage High-Level Input Voltage Low-Level Output Voltage High-Level Output Voltage Low -Level Output Current High-Level Output Current Pull-up Resistor Pull-down Resistor Min 2.1 2.2 80 80 Max 0.9 0.4 4.0 4.0 120 120 Unit Volts Volts Volts Volts mA mA KΩ KΩ Conditions VIN, 3.0V VIN, 3.0V VIN, 3.0V VIN, 3.0V VOL = 0.4 V VOH = 2.2 V Resistor Turned On Resistor Turned On Selected RF Characteristics Parameters Antenna load Radio Receiver Sensitivity level Maximum usable level Input VSWR Radio Transmitter Maximum output power Initial Carrier Frequency Tolerance 20 dB Bandwidth for modulated carrier Conditions BT Spec Typical 50 Unit ohm dBm dBm BER < .001 with DH5 BER < .001 with DH1 ≤ -70 ≥ -20 -84 -9 2.5:1 50 Ω load -6 to +4 ± 75 ≤ 1000 +5 0 932 dBm kHz kHz ©2008 Amp’ed RF Inc 4 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 4 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Pin Assignment Name Type UART Interface RXD TXD CTS RTS Boot 0 GPIO [11] GPIO [12] VDD GND Reset RESETN GPIO [0] GPIO [1] GPIO [2] GPIO [3] GPIO [4] GPIO [5] GPIO [6] GPIO [7] GPIO [8] GPIO [9] GPIO [10] GPIO [13] GPIO [14] GPIO [15] I I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O 3 16 17 19 1 18 20 22 13 4 7 5 15 14 21 Reset input (active low for 5 ms); General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output General Purpose Input/Output SPI MISO SPI MOSI SPI SS SPI CLK UART 2 RXD UART 2 TXD ADC 0 ADC 1 ADC 2 ADC 3 GPIO – General Purpose Input/Output I O I O I I/O I/O Pin # 8 6 9 10 2 11 12 24 23 Description Receive data Transmit data Clear to send (active low) Request to send (active low) Boot Loader (active high) General Purpose Input/Output General Purpose Input/Output VDD GND ALT Function Reserved – Available on BT21.2 Power and Ground © 5 2008 Amp’ed RF Inc 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 5 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 BT-21 Drawing ©2008 Amp’ed RF Inc 6 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 6 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Hardware Block Diagram Battery or supply Regulator 2.75V 2.75V SPI BP Filter STLC2500C RAM ROM UART Reset ARM MCU GPIO BT_W akeUp 256K/Flash 64K/RAM UART 26 MHz Crystal BT stack up to HCI - abSerial/Application - GAP, SPP, DUN, OBEX - SDP/RFCOMM - L2CAP BT-21 Bluetooth Module Block Diagram ©2008 Amp’ed RF Inc 7 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 7 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Hardware Design Amp’ed RF modules support UART, USB, SPI, and GPIO hardware interfaces. Note that the usage of these interfaces is dependant upon the firmware that is loaded into the module, and is beyond the scope of this document. Notes All unused pins should be left floating; do not ground. All GND pins must be well grounded. The area around the module should be free of any ground planes, power planes, trace routings, or metal for 8 mm from the antenna in all directions. Traces should not be routed underneath the module. Module Reflow Installation The BT-21 is a surface mount Bluetooth module supplied on a 24 pin, 6-layer PCB. The final assembly recommended reflow profiles are: For non Pb-free applications, Sn63Pb37 solder is recommended. Maximum peak temperature of 208° - 210°C (below 220°C). Maximum rise and fall slope after liquidous of < 2°C/second. Maximum rise and fall slope after liquidous of < 2°C/second. Maximum time at liquidous of 50 – 90 seconds. For RoHS/Pb-free applications, Sn96.5/Ag3.0/Cu0.5 solder is recommended. Maximum peak temperature of 230° - 240°C (below 250°C). Maximum rise and fall slope after liquidous of < 2°C/second. Maximum rise and fall slope after liquidous of < 3°C/second. Maximum time at liquidous of 40 – 80 seconds. © 8 2008 Amp’ed RF Inc 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 8 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 GPIO Interface All GPIOs are capable of sinking and sourcing 4mA of I/O current. GPIO [0] to GPIO [7] are internally pulled down with 100KΩ (nominal) resistors GPIO [8] to GPIO [15] are internally pulled up with 100KΩ (nominal) resistors. UART Interface The UART is compatible with the 16550 industry standard. Four signals are provided with the UART interface. The TXD and RXD pins are used for data while the CTS and RTS pins are used for flow control. CTS TXD Host RXD RTS RXD RTS CTS TXD Amp’ed RF Module Connection to Host Device ©2008 Amp’ed RF Inc 9 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 9 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 Amp’ed RF Module Typical RS232 Circuit ©0 1 2008 Amp’ed RF Inc 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 10 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 PCB Layout Guidelines ©1 1 2008 Amp’ed RF Inc 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 11 of 12 Amp’ed RF, Inc. (phone) 408 213-9530 (fax) 408 213-9533 FCC Regulatory Compliance This module has been tested and found to comply with the FCC Part15 Rules. These limits are designed to provide reasonable protection against harmful interference in approved installations. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Modifications or changes to this equipment not expressly approved by Amp’ed RF may void the user’s authority to operate this equipment. Modular Approval FCC ID: WDTBTMOD2 In accordance with FCC Part 15, the BT-21 is listed above as a Modular Transmitter device. FCC Label Instructions The outside of final products that contain a BT-21 device must display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: WDTBTMOD2 or “Contains FCC ID: WDTBTMOD2. Any similar wording that expresses the same meaning may be used. ©2008 Amp’ed RF Inc 12 9/29/08 1722 Ringwood Ave, Suite 250, San Jose, CA 95131, USA www.ampedrf.com BT-21 Datasheet Page 12 of 12