The SC91F72BM20U is a Microcontroller Unit (MCU/MPU/SOC) manufactured by SinOne that is compliant with the RoHS directive. It has 4KB of 128-Byte FLASH memory and is packaged in a 7.8mm SOP-20-51Series footprint. It is optimized for low-power applications and has a built-in power management unit that allows for a high level of flexibility. The SC91F72BM20U has an 8-bit CPU core and is capable of operating at a clock frequency up to 20MHz. It has multiple peripherals such as 16bit timers/counters, Analog Comparator module, Programmable watchdog timer, Up/Down counter, 4-level interrupt controller, UART, I2C-Bus/SPI-Bus Interface, ADC, and PWM Timer. It is ideal for utility monitoring, industrial automation, medical, and communication applications.