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You are here: Home / Topics / embedded system(micro controller AT89C51)

embedded system(micro controller AT89C51)

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Microcontroller › 8051 › embedded system(micro controller AT89C51)

  • This topic has 1 reply, 2 voices, and was last updated 6 years, 11 months ago by shivkumar.
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  • February 29, 2012 at 8:15 pm #4916
    Dinesh Kumawat
    Participant
    The AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4Kbytes of Flash programmable and erasable read only memory (PEROM). The deviceis manufactured using Atmel’s high-density nonvolatile memory technology and iscompatible with the industry-standard MCS-51 instruction set and pinout. The on-chipFlash allows the program memory to be reprogrammed in-system or by a conventionalnonvolatile memory programmer. By combining a versatile 8-bit CPU with Flashon a monolithic chip, the Atmel AT89C51 is a powerful microcomputer which providesa highly-flexible and cost-effective solution to many embedded control applications.
     
    The AT89C51 provides the following standard features: 4Kbytes of Flash, 128 bytes of RAM, 32 I/O lines, two 16-bittimer/counters, a five vector two-level interrupt architecture,a full duplex serial port, on-chip oscillator and clock circuitry.

    In addition, the AT89C51 is designed with static logicfor operation down to zero frequency and supports twosoftware selectable power saving modes. The Idle Modestops the CPU while allowing the RAM, timer/counters,serial port and interrupt system to continue functioning. The
    Power-down Mode saves the RAM contents but freezesthe oscillator disabling all other chip functions until the next
    hardware reset.
     
     
    Thanks…

     

    July 18, 2018 at 5:05 am #14864
    shivkumar
    Participant

    very useful and effective posting 

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