Specifications

RF-BM-BG22B1
www.szrfstar.com
Shenzhen RF-star Technology Co., Ltd. Page 1 of 15
1 Device Overview
1.1 Module Series
There are three modules of RF-BM-BG22Bx series. All of them are based on Silicon Labs EFR32BG22 series. Because
the EFR32BG22 chips are compatible in package, pins and peripherals, those three modules are pin-to-pin compatible
with each other as well.
Table 1. Module Specification of RF-BM-BG22Bx
Model
Chip Model
Max. CPU
Speed
TX
Power
FLASH
RAM
Protocol
BG22B1
EFR32BG22C112F352GM32-C
38.4 MHz
0 dBm
352 kB
32 kB
BT5.2
BG22B2
EFR32BG22C222F352GM32-C
76.8 MHz
+6 dBm
352 kB
32 kB
BT5.2
Proprietary
BG22B3
EFR32BG22C224F512GM32-C
76.8 MHz
+6 dBm
512 kB
32 kB
BT5.2
Direction finding
Proprietary
Note: RF-BM-BG22B1 and RF-BM-BG22B2 do not support AoA/AoD and LE Long Range (125 kbps and 500 kbps)
PHYs.
1.2 Description
RF-BM-BG22B1 is an RF module based on EFR32BG22C112F352GM32-C, one of Gecko family of SoCs from Silicon
Labs, with a 32-bit ARM
®
Cortex
®
-M33 core with 38.4 MHz maximum operating frequency. It integrates a 38.4 MHz
crystal, a matching, an antenna matching, a low-pass filter and antenna options of a meander line inverted-F PCB
antenna and a half-hole interface. It supports Bluetooth 5.2 low energy and can be preprogrammed with a serial interface
communication protocol for simple programming. It also has a range of analog and digital interfaces such as PRS, ADC,
UART, SPI, I
2
C, PWM, ISO 7816, IrDA, I
2
S, EUART and PDM. It features low power consumption, compact size, robust
connection distance, and rigid reliability. The module reaches up to 0 dBm TX power. 1.27-mm pitch stamp stick package
for easy assembling and cost-effective PCB design. RF-BM-BG22B1 is pin-to-pin compatible with BG22B2 and BG22B3.
1.3 Key Features
• Protocol
- Bluetooth 5.2 low energy
• Supported Modulation Format
- 2 (G)FSK with fully configurable shaping
• High-Performance 32-bit 38.4 MHz ARM
®
Cortex
®
-
M33 with DSP instruction and floating-point unit for
efficient signal processing
• Memory
- Flash: 352 kB
- RAM: 32 kB
• TX power: -28 dBm ~ 0 dBm
• Wide Peripherals
- 12-bit 1 Mbps SAR Analog to Digital Converter
(ADC)
- Up to 18 GPIOs with output state retention and
asynchronous interrupts