Z84C9008VSG

Specialized Overview

The Z84C9008VSG is a Serial/Parallel Counter/Timer KIO peripheral manufactured by Zilog. It integrates a Z84C20 PIO, Z84C30 CTC, and Z84C4x SIO into a single 84-pin PLCC package. The device operates at an 8 MHz bus clock frequency with a single +5 V power supply. It features two independent serial channels, three 8-bit parallel ports, four counter/timer channels, and an on-chip oscillator. Designed in CMOS for low power consumption, it supports the Z80 family interrupt daisy chain.

Specialized Feature Summary

• Integrates multiple I/O peripherals including PIO, CTC, and SIO logic units within a single package.
• Provides two independent synchronous/asynchronous serial communication channels.
• Includes four independent 8-bit counter/timer channels for timing and counting applications.
• Features an on-chip clock oscillator/driver to reduce external circuitry requirements.

Specialized Applications

• System design requiring integrated serial and parallel interface capabilities.
• Applications utilizing Z80 family microprocessors for peripheral control.
• Environments needing programmable interrupt priorities via daisy chain support.

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life notifications prior to integration. Ensure handling procedures account for moisture sensitivity levels specified in the datasheet to prevent damage during assembly.

Specialized Selection Notes

Select this component when a Z80-based system requires consolidated I/O functionality without external discrete chips. Verify that the 8 MHz operating speed meets system timing requirements. Ensure the PCB layout accommodates the 84-pin PLCC footprint and provides adequate thermal management for CMOS operation.

Specialized Part Context

This part belongs to the Z84C90 KIO series, which combines standard Zilog peripheral functions. It serves as a cost-effective solution for expanding I/O capabilities in embedded systems. The VSG suffix typically denotes specific packaging and temperature range variations within the Z84C90 product line.

Specialized Replacement Considerations

Direct pin-to-pin replacements are not explicitly listed in the provided documentation. Consider other members of the Z84C90 series (e.g., Z84C9010VSC) if higher clock speeds are acceptable. Verify register compatibility and electrical characteristics before substituting with any alternative I/O controller ICs.