Bluetooth 5 Module BM832/A/E Data Sheets Ver 1.02 March 2019 BluNor BM832/A/E are powerful, highly flexible, ultra low power Bluetooth Low Energy (BLE) modules using TM Nordic nRF52 SoC. With an ARM Cortex M4(F) MCU, up to 512KB flash, 64KB RAM, embedded 2.4GHz multi-protocol transceiver, and an integrated PCB trace antenna. It allows faster time to market with reduced development cost. BM832/A/E are designed to minimize PCB cost and to maximize efficiency in production line dedicated for Bluetooth module. The cost of using BM832/A/E modules can be lower than designing-in SoC at any quantity. At low cost, BM832/A/E offer full features. Inductors for DCDC converter are integrated. All 32 GPIOs are accessible. Bluetooth ranges are measured in environments with Low Multiple Path Interference (LMPI or antennas at 3 meters above ground) and antennas at 5 feet (1.52 meters, typical height of thermostat in the USA). Bluetooth range is much shorter in environments with radio frequency interference and severe multiple path interference. BM832 Specications: Nordic nRF52 with ARM Cortex M4F. Quadrature Demodulator (QDEC) Complete RF solution with integrated antenna 128-bit AES HW encryption Integrated DC-DC converter 5 x 32 bits, 3 x 24 bits Real Time Counters (RTC) Serial Wire Debug (SWD) Available NFC-A tag interface for OOB pairing Nordic SoftDevice Ready Receiver Sensitivity: -96 dBm at 1Mbps Over-the-Air (OTA) rmware update TX power: +/- 0 dBm programmable 4 dBm to Flash/RAM: 512KB/64KB or 256KB/32KB. -20dBm in 4 dB steps. 32 General purpose I/O pins Hybrid pins: 16 castellated and 24 LGA. 12 bit/200KSPS ADC, 8 congurable channels Integrated PCB trace antenna with programmable gain. Operation voltage: 1.7V to 3.6V 3X SPI Master/Slave (8Mbps) Embedded inductors for DCDC converter 3X 4-channel pulse width modulator (PWM) Operation temperature: -40C to +85C Low power comparator FCC ID: X8WBM832 2 2X 2-wire Master/Slave (I C compatible) IC ID: 4100A-BM832 I2S audio interface CE: Certified UART (with CTS/RTS and DMA) TELEC: 201-180924 20 channel CPU independent Programmable Australia/New Zealand: Certified Peripheral Interconnect (PPI). QDID:97989 Applications Wearable Sensors Beacons/Proximity Home and building automation Fitness/Sports Key fobs Smart toys Wireless charger Connected appliances Interactive entertainment devices Lighting products Model Summaries module BM832 BM832A BM832E Flash/RAM 512KB/64KB 192KB/24KB 512KB/64KB Size 10.2x15x1.9mm 10.2x15x1.9mm 10.2x15x1.9mm GPIO 32 32 32 Antenna PCB Trace PCB Trace u.FL BT range, antenna at LMPI 340 meters 340 meters BT range, antenna at 1.52 M 270 meters 270 meters Availability Production Production Production 1Bluetooth 5 Module BM832/A/E Data Sheets Ver 1.02 March 2019 Table Of Contents 1. Introduction ........................................................................................................................................................3 BM832 Block Diagram .......................................................................................................................................3 BM832 3 BM832A .............................................................................................................................................................3 BM832E ............................................................................................................................................................3 2. Codes Development Using Nordic Tools ...........................................................................................................4 Easy, fast and safe code development ..............................................................................................................4 Over-The-Air DFU .............................................................................................................................................4 SoftDevices .......................................................................................................................................................4 Development Tools ............................................................................................................................................4 3. Product Overview ..............................................................................................................................................5 Nordic SoCs ......................................................................................................................................................5 Mechanical Drawings ........................................................................................................................................7 BM832/BM832A Pin Functions ..........................................................................................................................8 Mounting BM832 on the Host PCB ..................................................................................................................11 4. Bluetooth Range Measurements .....................................................................................................................12 Measurement Results ......................................................................................................................................12 5. Evaluation Board .............................................................................................................................................13 Nordic Development Environment ...................................................................................................................13 Loading Firmware into Evaluation Board Through a Nordic DK ......................................................................13 Evaluation Board Schematic ...........................................................................................................................17 Suggestion for Battery Power Application .......................................................................................................18 6. Preloaded Firmware ........................................................................................................................................19 Reprogram with New AT Command Codes .....................................................................................................19 Reprogram with Users Codes .........................................................................................................................19 7. Miscellaneous ..................................................................................................................................................20 Soldering Temperature-Time Profile for Re-Flow Soldering ............................................................................20 Cautions, Design Notes, and Installation Notes ..............................................................................................20 Packaging ........................................................................................................................................................23 FCC Label .......................................................................................................................................................23 8. Revision History ..............................................................................................................................................24 9. Contact Us .......................................................................................................................................................25 2