BUY CS82C54 https://www.utsource.net/itm/p/288599.html
CMOS Programmable Interval Timer
The CS82C54 is a programmable interval timer/counter manufactured by Intersil Corporation. It is available in a 28-pin PLCC package. The CS82C54 is a programmable interval timer/counter with three independent 16-bit counters. It is used to generate accurate time delays and periodic interrupts. The CS82C54 can be programmed to generate interrupts at specific intervals or to count external events. It can also be used to generate pulse width modulation signals. The CS82C54 is used in a variety of applications, including industrial automation, robotics, medical equipment, and embedded systems. It is also used in automotive applications, such as engine control systems and airbag deployment systems. (For reference only)