Specifications

BLE 5.1 Modules BM833/F/EVer 0.50 June 2019
1
BluNor BM833/A are powerful, highly flexible, ultra low power Bluetooth Low Energy (BLE) modules using
Nordic nRF52 SoC. With an ARMCortex
TM
M4(F) MCU, up to 512KB flash, 128KB RAM, embedded 2.4GHz
multi-protocol transceiver, and an integrated PCB trace antenna or an u.FL for external antenna. It allows
faster time to market with reduced development cost.
BM833A/AF are designed to minimize PCB cost and to maximize efficiency in production line dedicated for
Bluetooth modules. The cost of using BM833A module can be lower than designing-
in SoC at any quantity. At low cost, BM833A are full feature modules. Inductors for
DCDC converter are integrated. All 32 GPIOs are accessible.
BM833/F/E, an nRF52833 module has compatible footprint for upgrading. It offers
more GPIOs, more memories, +8 dBm TX.
Array antenna will be supported in BT833 Series modules.
BM833A Specifications:
Nordic nRF52 with ARM Cortex M4 at 64 MHz.
Supported data rate:
BLE 5.1: 2Mbps, 1Mbps, 500kbps, 125kbps
Angle-of-Arrival (AoA) and Angle-of-Departure
(AoD) direction finding using Bluetooth.
RSSI, 1 dB resolution
Serial Wire Debug (SWD)
Nordic SoftDevice Ready
Over-the-Air (OTA) firmware update
Flash/RAM: 192KB/24KB
32 General purpose I/O pins
12 bit/200KSPS ADC, 8 configurable channels with
programmable gain.
2X SPI Master/Slave (8Mbps)
4-channel pulse width modulator (PWM)
Low power comparator
2-wire Master/Slave (I
2
C compatible)
Digital microphone interface (PDM)
UART (with CTS/RTS and DMA)
20 channel CPU independent Programmable
Peripheral Interconnect (PPI).
Quadrature Demodulator (QDEC)
AES HW encryption
3 x 32 bit timer with counter mode
2x realtime counter
SoC receiver Sensitivity: -97 dBm at 1Mbps; -104
dBm at 125 kbps
SoC TX power: +/- 0 dBm; programmable 4 dBm to -
20dBm in 4 dB steps.
Hybrid pins: 16 castellated and 24 LGA.
Operation voltage: 1.7V to 3.6V
4.6 mA peak current at RX or +0dBm TX.
Integrated DC-DC converter.
Embedded inductors for DCDC converter
Operation temperature: - 4 0 ° C t o + 8 5 ° C
Major BM833 Enhancement
Cortex M4F at 64 MHz
Max SoC TX power: +8 dBm.
Secure boot ready
1.7V to 5.5V supply voltage
USB 2.0 full speed controller (12 Mbps)
Operation temperature -40°C to +105°C
Model Summaries
module
BM833A
BM833AF BM833 BM833F
BM833E
SoC
nRF52811 QFAA
nRF52811 QFAA nRF52833 QIAA nRF52833 QIAA
nRF52833 QIAA
Flash/RAM
512KB/64KB
192KB/24KB 512KB/128KB 512KB/128KB
512KB/128KB
Size
10.2x15x1.9mm
15x20.6x1.9mm 10.2x15x1.9mm 15x20.6x1.9mm
10.2x15x1.9mm
GPIO
32
32 42 42
42
Antenna
PCB trace PCB trace PCB trace PCB trace
u.FL
Antenna Gain
0.01dBi
-0.88dBi -0.56dB 0.51dBi
6dBi

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