OM6621D is an Ultra Low Power SoC (System-on-Chip) solution designed for Bluetooth Low Energy 4.2, which combines an ARM Cortex-M4 processor, 24KB SRAM, 24K ROM, 16KB OTP, 512KB SFlash, 2.4GHz RF transceiver and a full range of peripherals.
BT4.2, 24К - Маловато будет