The Z80 series Serial/Parallel Counter/Timer KIO is a multichannel, multipurpose I/O peripheral device designed to provide the end user with a powerful solution to meet an assortment of peripherals requirements. The Z84C90 KIO peripheral combines the features of one Z84C30 CTC, one Z84C20 PIO and a Z84C4x SIO, plus an 8-bit, bit-programmable I/O port and a crystal oscillator. Utilizing fifteen internal registers for data and programming information, the KIO can easily be configured to any given system environment. Although optimum performance is obtained with a Z84C00 CPU, the KIO can just as easily be used with any other CPU.
● Two independent synchronous/asynchronous serial channels
● Three 8-bit parallel ports
● Four independent counter/timer channels
● On-chip clock oscillator/driver
● Software/hardware resets
● Designed in CMOS for low power operations
● Supports Z80 Family interrupt daisy chain
● Programmable interrupt priorities
● 8, 10 and 12.5MHz Bus clock frequency
● Single 5V supply
