BUY M53200 https://www.utsource.net/itm/p/128358.html
Encoder/Decoder
Description: The M53200 is a 4-bit CMOS microcontroller manufactured by Mitsubishi. Features: 4-bit CPU core 4K bytes of ROM 256 bytes of RAM 8-bit timer/counter 8-bit A/D converter Serial I/O port Interrupt controller Application: The M53200 is suitable for use in a wide range of applications, including industrial control, home appliances, automotive, and consumer electronics. (For reference only)