BUY AT89C51ED2-3CSUM https://www.utsource.net/itm/p/7473685.html
80C51 89C Microcontroller IC 8-Bit 60MHz 64KB (64K x 8) FLASH 40-PDIL
Description: The AT89C51ED2-3CSUM is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of Flash programmable and erasable read only memory (PEROM). Features: 8K bytes of Flash programmable and erasable read only memory (PEROM) 256 bytes of RAM 32 I/O lines Three 16-bit timer/counters Six interrupt sources Programmable serial channel Low power idle and power down modes Applications: The AT89C51ED2-3CSUM is suitable for a wide range of applications including: Industrial control Automotive Consumer Office automation Telecommunications Security systems Instrumentation (For reference only)