BUY Z0843006PSC (Z80CTC) https://www.utsource.net/itm/p/11774537.html

Description: The Z80CTC (Z0843006PSC) is a programmable counter/timer circuit manufactured by ZiLog. It is a 28-pin DIP (dual in-line package) integrated circuit. Features: - Four independent counter/timer channels - Programmable interrupt generation - Programmable input/output functions - Programmable counter/timer modes - Programmable counter/timer prescaler - Programmable counter/timer reload Applications: - Clock and frequency generation - Pulse width modulation - Event counting - Time delay generation - Pulse rate measurement - Pulse generation - Data acquisition (For reference only)