Z8S18033FEC

Overview

The Z8S18033FEC is a static microprocessor IC from the Zilog Z180 series, operating at a maximum clock speed of 33 MHz. It features an 8-bit data bus width and utilizes an 80-pin QFP surface-mount package. The device operates on a 5.0V supply voltage with I/O levels matching the supply. It supports an industrial temperature range of -40°C to +100°C (TA). Key integrated peripherals include two DMA channels, two ASCI channels, two counter/timers, and an MMU supporting up to 1 MB addressing.

Feature Summary

• Code-compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Features two chain-linked DMA channels for high-speed memory-to-memory or I/O transfers.
• Includes two enhanced asynchronous serial communication interfaces (ASCI) with FIFO buffers.
• Provides multiple low-power-down modes to reduce current consumption during idle states.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 software.
• Industrial control applications needing robust interrupt handling and peripheral integration.
• Data acquisition systems utilizing DMA for efficient data transfer without CPU intervention.
• Communication devices leveraging dual UARTs for asynchronous serial data exchange.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as historical records indicate non-compliance for certain variants. Check for Product Change Notifications (PCN) regarding obsolescence or manufacturing site changes. Ensure storage conditions respect Moisture Sensitivity Level (MSL) 3 requirements prior to soldering.

Selection Notes

Select this variant when a 33 MHz processing speed is required within the Z180 architecture. Choose the 80-QFP package for surface-mount board designs. Verify that the system power supply aligns with the 5V requirement. Consider the extended temperature range if the application environment exceeds standard commercial limits. Evaluate peripheral needs against the integrated DMA and ASCI capabilities.

Part Context

This component belongs to the Z8S180 family, which enhances the original Z80180 design. It integrates a Z80-compatible core with additional system resources like an MMU and improved serial interfaces. The Z180 series is designed for applications demanding higher performance than standard Z80 processors while maintaining software compatibility.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Zilog/Zilog archives for end-of-life replacement strategies or equivalent discontinued part mappings.