The MS56SFA is a highly flexible, ultra-low power, cost-effective Bluetooth 5 compliant Bluetooth module based on the IN610. Its powerful Arm® Cortex®-M4F CPU with a core running speed of 64Mhz, in addition, it comes with 512kB FLASH program space, 256 KB ROM, 96 KB SRAM and 4 KB eFuse memory. The hardware supports two VDDIO individual power supply control, supporting five Bluetooth devices to connect simultaneously, while the ultra-low system power consumption and excellent RF performance, as well as other powerful supporting resources for Bluetooth connectivity to provide the perfect solution.