BUY TMP80C40AP-6 https://www.utsource.net/itm/p/1172334.html
CMOS 8-BIT SINGLE-CHIP MICROCOMPUTER (TLCS-48C)
Description: 8-bit Microcontroller with ROM, RAM, I/O, and Timer Features: 8-bit CMOS microcontroller 16K bytes of ROM 256 bytes of RAM 8-bit timer/counter 8-bit I/O ports Low power consumption High speed operation Single +5V power supply 40-pin DIP package Applications: Automotive control systems Home appliances Security systems Office automation Industrial control systems Robotics (For reference only)