Z84C9010ASG

Specialized Overview

The Z84C9010ASG 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 supports bus clock frequencies of 8, 10, and 12.5 MHz, with the '10' suffix indicating a 10 MHz rating. It operates on a single +5 V power supply and features two independent synchronous/asynchronous serial channels, three 8-bit parallel ports, four counter/timer channels, and an 8-bit bit-programmable I/O port. The component is housed in a 100-pin LQFP package.

Specialized Feature Summary

• Integrates multiple peripherals including a Parallel Input/Output unit, Counter/Timer logic, and Serial I/O channels within a single CMOS package.
• Includes an on-chip clock oscillator/driver capable of accepting crystal or TTL-compatible clock inputs to reduce external circuitry requirements.
• Supports programmable interrupt priorities and daisy chain configurations for efficient CPU interrupt handling.

Specialized Applications

• System design requiring integrated serial and parallel communication interfaces.
• Applications utilizing event counting, interval timing, or baud rate generation via the counter/timer channels.
• Embedded systems interfacing with keyboards, printers, or other peripheral devices using the parallel input/output ports.

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific ordering suffix matches the required frequency and package type. Check for End-of-Life status as availability may be limited. Ensure environmental compliance documentation aligns with project requirements before procurement.

Specialized Selection Notes

Select this model when a 10 MHz operating frequency is required alongside integrated serial and parallel I/O capabilities. Compare against the Z84C9008 series if an 8 MHz speed is sufficient, or the Z84C9012 series for higher performance needs. Ensure the system design accommodates the 100-pin LQFP footprint and single +5 V power supply constraints.

Specialized Part Context

The Z84C9010ASG belongs to the Z84C90 KIO family, which combines Z80-family compatible peripherals. It serves as a comprehensive I/O solution for microprocessor systems, reducing board space by consolidating separate PIO, CTC, and SIO chips into one unit. The 'A' suffix typically denotes specific manufacturing revisions or temperature grades within the Zilog product line.

Specialized Replacement Considerations

Direct replacements include the Z84C9010ASC (same 10 MHz frequency, 100-pin LQFP package) and the Z84C9010VSC (10 MHz frequency, 84-pin PLCC package). Verify pin compatibility and package dimensions when substituting between LQFP and PLCC variants.