Z84C9010VEC

Specialized Overview

The Z84C9010VEC is a CMOS Serial/Parallel Counter/Timer KIO peripheral designed for the Z80 family. It integrates a Z84C30 CTC, Z84C20 PIO, and Z84C4x SIO with an on-chip oscillator into a single package. The device supports bus clock frequencies of 8, 10, and 12.5 MHz; this specific model operates at 10 MHz. It features two independent serial channels, three 8-bit parallel ports, four counter/timer channels, and an 8-bit bit-programmable I/O port. The component utilizes fifteen internal registers for configuration and data handling.

Specialized Feature Summary

• Integrates multiple peripherals including a Counter/Timer, Parallel I/O, and Serial I/O controller within one chip.
• Supports synchronous and asynchronous serial communication protocols such as Bisync and SDLC/HDLC.
• Includes an on-chip clock oscillator/driver compatible with crystal or TTL inputs.
• Features programmable interrupt priorities and supports Z80 Family interrupt daisy chain.

Specialized Applications

• Multichannel I/O peripheral solutions for embedded systems.
• Serial-to-parallel and parallel-to-serial data conversion interfaces.
• Event counting and interval timing applications using counter/timer channels.
• Systems requiring integrated modem control signals via serial channels.

Specialized Procurement Notes

Verify the exact ordering suffix against the manufacturer's current documentation to confirm pin compatibility and frequency ratings. Check for End-of-Life status or Product Change Notifications prior to finalizing design-in decisions. Ensure that the voltage supply requirements match the system specifications before procurement.

Specialized Selection Notes

Select this component when a consolidated solution for serial, parallel, and timer functions is required for Z80-based architectures. Compare the 10 MHz operating speed against system clock requirements. Evaluate the 84-pin PLCC package constraints against available board space and routing capabilities relative to the 100-pin LQFP alternative.

Specialized Part Context

This part belongs to the Z84C90 KIO series, which combines standard Zilog peripheral logic units. It serves as a comprehensive interface device for microprocessor systems needing diverse I/O capabilities without external discrete components. The VEC suffix indicates the specific package type and performance grade within the broader Z84C90 product line.

Specialized Replacement Considerations

The Z84C9010ASC is a functional equivalent offering the same 10 MHz performance in a 100-pin LQFP package. Designers must account for pinout differences and physical footprint changes when substituting between the PLCC and LQFP variants.