BUY UPD4712CGT https://www.utsource.net/itm/p/1701522.html
RS-232 LINE DRIVER/RECEIVER
Package: SOP28 Manufacturer: NEC Description: The UPD4712CGT is a CMOS LSI device that is designed for use in a wide range of applications. It is a 4-bit microcontroller with a built-in ROM, RAM, and I/O ports. It also has an 8-bit timer, a serial interface, and an interrupt controller. Features: 4-bit microcontroller with built-in ROM, RAM, and I/O ports 8-bit timer Serial interface Interrupt controller Low power consumption High speed operation Applications: Automotive systems Industrial control systems Home appliances Office automation systems Security systems (For reference only)