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AT89C2051: MCS-51 Based 8 Bit Microcontroller

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Low-voltage, high-performance CMOS 8-bit microcomputer with 2KB of flash programmable and erasable read-only memory. The device is manufactured using Atmel high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. This versatile 8-bit CPU with flash provides a highly flexible and cost-effective solution for many embedded control applications.


  • Flash (Kbytes): 2 Kbytes
  • Pin Count: 8
  • Max. Operating Freq. (MHz): 24 MHz
  • CPU: 8051-12C
  • Max I/O Pins: 15
  • UART: 1
  • SRAM (Kbytes): 0.125
  • Operating Voltage (Vcc): 2.7 to 6.0
  • Timers: 2

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