Xilinx Evaluation Kit

Intel Evaluation Kit

Mircochip Evaluation Kit


8254 Timer

8254 Timer

8254 Programmable Timer is used for timing control applications in microcomputer systems. The design is capable of generating accurate time delays under software control.


    • Three independently operated 19-bit counters
    • Binary/BCD count operation
    • Multiple Latch command for easy monitoring
    • Counter Latch command
    • Six count modes available for each counter
      • Interrupt at the End of the Count
      • GATE Re-triggerable One-Shot
      • Rate Generator
      • Square Wave Generator
      • Software-Triggered Strobe
      • Re-triggerable Hardware-Triggered Strobe
    • Functionally based on 8254


  • Compatible to 8254 and uPD71054
  • Timers can be configured to operate in one of the six operating modes supported.

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