BUY AT89C2051-24PU https://www.utsource.net/itm/p/328101.html
8-bit Microcontroller with 2K Bytes Flash
Description: The AT89C2051-24PU is a low-power, high-performance CMOS 8-bit microcontroller with 2K bytes of Flash programmable and erasable read only memory (PEROM). Features: 2K bytes of Flash programmable and erasable read only memory (PEROM) 256 bytes of RAM 32 I/O lines Two 16-bit timer/counters Six interrupt sources Programmable serial UART channel Low-power idle and power-down modes On-chip oscillator and clock circuitry Applications: The AT89C2051-24PU is suitable for a wide range of applications, including remote control systems, consumer electronics, automotive, industrial control, and medical instruments. (For reference only)