EFR32BG21 Bluetooth BLE 5.0 Module SKB381

The SKB381 is a highly integrated BLE 5.0 module, designed for high data rate, short-range wireless communication in the 2.4GHz ISM band. The module is based on EFR32BG21 radio transceiver IC, which integrates a 32 bit ARM Cortex-M33 76.8MHz CPU, 64kB Data RAM, 512kB Flash memory and analog and digital peripherals. The SKB381 provides a high cost-effective BLE solution for wireless transmission.

Product Features：

◆ Main Chip: SILICON LABS EFR32BG21A020F512IM32-B

◆ BLE® 5.0 protocol

◆ Supported BLE all data rates: 125kbps/500kbps/1Mbps/2Mbps

◆ Superior Radio Performance: TX Power 20dBm / RX sensitivity -104.9dBm@125kbps GFSK

◆ Ultra Low Power consumption: TX 9.3mA@0dBm,TX 33.8mA@10dBm, TX 60.8mA@20dBm；RX 8.8mA@1Mbps；Sleep current<5.0uA

◆ 2x16bit timers+1x32bit RTC timer+1*24bit Low Energy Timer for waveform generation

◆ 12-bit 1Msps SAR ADC

◆ Up to 16 general-purpose I/O pins with output state persistence and asynchronous interrupt capabilities

◆ Module interface for general serial port, full duplex two-way communication;

◆ HW encryption: AES 128/256, SHA-1, SHA-2, ECC(up to 256bit), ECDSA(up to 256bit),ECDH and J-Pake.

◆ ROHS compliance (Lead-free)