BUY SQ9910 https://www.utsource.net/itm/p/5454579.html

Description: SQ9910 is a low-cost, low-power, high-performance CMOS 8-bit microcontroller with a built-in 8-bit CPU. Features: 8-bit CPU Low power consumption High performance CMOS On-chip ROM, RAM, and I/O 8-bit timer/counter 8-bit A/D converter On-chip oscillator Low-voltage programming Low-voltage operation On-chip debugging On-chip power-on reset On-chip watchdog timer Applications: Automotive Industrial control Home appliances Consumer electronics Security systems Medical equipment Office automation (For reference only)