Z8L18220FSC

Overview

The Z8L18220FSC is a static microprocessor unit based on the Z8S180 core, operating at 20 MHz with 3.3V supply. It integrates two ESCC channels with 32-bit CRC, two UART channels, and three 8-bit parallel I/O ports. The device includes a 16550 compatible MIMIC interface for direct PC bus connection, two DMA channels, and an on-chip interrupt controller. It utilizes a 100-pin QFP package.

Feature Summary

• Integrates Z8S180 MPU core with two ESCC channels supporting 32-bit CRC
• Includes 16550 compatible MIMIC interface for direct PC/XT/AT bus connectivity
• Features two DMA channels and two 16-bit timer counters
• Provides fully static operation with low EMI option

Applications

• Modem applications including V.Fast standards
• Fax machine control systems
• Voice messaging equipment
• General communications peripheral controllers

Procurement Notes

Verify the specific suffix FSC against official datasheets to confirm package type and voltage rating. Confirm RoHS compliance status as specifications may vary by manufacturing lot. Ensure the supplier provides valid traceability documentation for this discontinued or legacy component series.

Selection Notes

Select this component when system requirements demand code compatibility with Zilog Z80/Z180 architectures alongside integrated serial communication capabilities. It is suitable for designs requiring direct host bus interfacing without external protocol converters. Evaluate pin multiplexing constraints carefully due to shared functions across the 100-pin interface.

Part Context

This part belongs to the Z80182/Z8L182 Intelligent Peripheral Controller (ZIP) family. These devices combine a high-performance microprocessor with extensive serial and parallel peripherals on a single chip. The family targets embedded communication applications where processing power and data handling must be consolidated into a compact footprint.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.