Z84C9008VSC00TR

Specialized Overview

The Z84C9008VSC00TR is a Serial/Parallel Counter/Timer KIO peripheral manufactured by Zilog. It integrates a Z84C30 CTC, Z84C20 PIO, and Z84C4x SIO with an on-chip oscillator into a single package. The device operates at a maximum bus clock frequency of 8 MHz and requires a single +5 V power supply. It is housed in an 84-pin PLCC (J-lead) surface-mount package. Key electrical parameters include a 5 V operating voltage and support for the Z80 family interrupt daisy chain.

Specialized Feature Summary

• Integrates two independent synchronous/asynchronous serial channels, three 8-bit parallel ports, and four counter/timer channels.
• Includes an on-chip clock oscillator/driver supporting crystal or TTL-compatible inputs.
• Features programmable interrupt priorities and supports Z80 family interrupt daisy chaining.

Specialized Applications

• Multichannel I/O peripheral solutions
• Serial communications applications
• Event counting and interval timing systems

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for Product Change Notifications (PCN) or End-of-Life (EOL) notices prior to procurement. Ensure the specific ordering suffix matches the required package and frequency specifications.

Specialized Selection Notes

Select this component when a combined solution for serial, parallel, and timer functions is required within a Z80-based architecture. Verify that the 8 MHz speed rating meets system timing requirements. Confirm compatibility with the target CPU's bus interface and ensure the 84-pin PLCC footprint fits the PCB layout constraints.

Specialized Part Context

This part belongs to the Z84C90 KIO series, which consolidates multiple discrete peripherals into one chip. It is designed to reduce board space and simplify system design by replacing separate Z84C30, Z84C20, and Z84C4x components. The '08' designation indicates the 8 MHz speed grade, while 'VSC' denotes the 84-pin PLCC package type.

Specialized Replacement Considerations

Direct pin-to-pin replacements are not explicitly listed in the provided documentation. Consider the Z84C9010VSC for higher speed requirements if the package remains compatible. Discrete Z84C30, Z84C20, and Z84C4x combinations may serve as functional alternatives but require additional board space.