BUY ST2221C-3 https://www.utsource.net/itm/p/1392515.html
16 BIT CONSTANT CURRENT LED DRIVERS
Description: ST2221C-3 is a high-performance, low-power, CMOS, single-chip, 8-bit microcontroller with an 8-bit CPU, 8K bytes of ROM, 128 bytes of RAM, and a variety of I/O ports. Features: 8-bit CPU 8K bytes of ROM 128 bytes of RAM I/O ports Low power consumption CMOS technology Applications: ST2221C-3 is suitable for a wide range of applications, including consumer electronics, home appliances, industrial control, automotive, and medical. It can be used in applications such as data acquisition, motor control, and communication. (For reference only)