The ERF32BG Blue gecko Bluetooth Smart SoC from silicon labs is a low energy UART, which quickly deliver Bluetooth® Smart connectivity to system-on-chip (SoC) devices. It is compatible with Bluetooth 4.2 Specification and has an integrated BALUN and a power amplifier.
It has a wide supply voltage range of 1.85 to 3.8 V with an active mode Rx current of 8.7 mA and Tx current at 0 dBm power of 8.8 mA, Excellent Receive Sensitivity of - 94 dBm and a programmable output power of +19.5dBm. It is based on ARM cortex-M4 core with 256kb of flash memory and 32kb RAM. It has 12 channel peripheral reflex system and a max. of 31 GPIO pins.
It comes with three packaging options i.e., QFN48 (7 mm x 7 mm), QFN32 (5 mm x 5 mm), WLCSP (3.3 mm x 3.2 mm).
