st17h78t is a system on chip (soc) for bluetooth® low energy and proprietary 2.4g applications. it has high-performance low-power 32-bit processer with 8kb retention sram, 64kb rom, 16kb otp. also, st17h78t can support ble with security and application, serial peripheral io and integrated application ip enables customer product to be built with minimum bill-of-material (bom) cost.