The Renesas Electronics 82C54 is a high performance CMOS programmable interval timer manufactured using an advanced 2 micron CMOS process. Six programmable timer modes allow the 82C54 to be used as an event counter, elapsed time indicator, programmable one-shot, and many other applications. The intersil advanced CMOS process results in a significant reduction in power with performance equal to or greater than existing equivalent products.

8MHz to 12MHz clock input frequency
Compatible with NMOS 8254
Enhanced version of NMOS 8253
Operating temperature is 0°C to +70°C
Three independent 16-Bit counters
Six programmable counter modes
Status read back command
Binary or BCD counting
Fully TTL compatible
Single 5V power supply