Z84C9008VEC

Specialized Overview

The Z84C9008VEC is a Serial/Parallel Counter/Timer KIO peripheral manufactured by Zilog. It integrates multiple I/O functions into an 84-pin PLCC package with an operating frequency of 8 MHz. The device includes two independent synchronous/asynchronous serial channels, three 8-bit parallel ports (PIO and PIA), four independent counter/timer channels, and an on-chip clock oscillator. It operates on a single +5 V power supply and supports the Z80 Family interrupt daisy chain.

Specialized Feature Summary

• Integrates two serial channels, three parallel ports, and four counter/timers in one package
• Includes an on-chip clock oscillator/driver for crystal or TTL input
• Supports programmable interrupt priorities via software/hardware resets
• Compatible with standard Z80 bus protocols and timing

Specialized Applications

• Multichannel I/O peripheral expansion for Z80-based systems
• Serial communication interface design requiring dual channels
• Hardware timer and event counting applications
• Parallel data acquisition and control interfaces

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'VEC' corresponds to the 84-pin PLCC package variant. Check for RoHS compliance status as manufacturing practices may vary across production batches. Ensure handling precautions are followed due to surface mount requirements.

Specialized Selection Notes

Select this component when a system requires consolidated serial, parallel, and timing functions without external discrete logic. Compare against the Z84C9010VEC if a higher 10 MHz operating speed is necessary. Verify that the 84-pin PLCC footprint matches the target PCB layout constraints. Ensure the host CPU supports the required address decoding and interrupt vectoring schemes.

Specialized Part Context

This part belongs to the Z84C90 KIO family, which combines Z84C30 CTC, Z84C20 PIO, and Z84C4x SIO functionalities. The 'VEC' suffix specifically denotes the 84-pin Plastic Leadless Chip Carrier (PLCC) package configuration. Other variants in the series include LQFP packages and different frequency ratings such as 10 MHz and 12.5 MHz.

Specialized Replacement Considerations

Direct pin-compatible replacements within the same family include the Z84C9010VEC for increased speed. Cross-family integration may require significant redesign. Verify electrical compatibility regarding voltage levels and signal timings before substitution.