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BUY AT89C2051-24PU https://www.utsource.net/itm/p/11249007.html
IC MCU 8BIT 2KB FLASH 20DIP
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: 8-bit CPU with 2K bytes of Flash programmable and erasable read only memory (PEROM) 2K bytes of Flash programmable and erasable read only memory (PEROM) 4-level deep hardware stack 32 programmable I/O lines 6 interrupt sources Programmable serial UART channel On-chip oscillator and clock circuitry Low power consumption Applications: Automotive Industrial control Home appliances Security systems PC peripherals Consumer electronics Office automation (For reference only)