Z8L18220AEG

Overview

The Z8L18220AEG is a static microprocessor unit based on the Z8S180 core, operating at frequencies up to 20 MHz with 3.3V power supplies. It integrates two ESCC channels featuring 32-bit CRC capabilities, two UART channels, and two 16-bit timer counters. The device includes an on-chip interrupt controller, clock oscillator, and three 8-bit parallel I/O ports. It provides a 16550 compatible mimic interface for direct connection to PC, XT, or AT buses and utilizes a 100-pin QFP package.

Feature Summary

• Integrates Z8S180 MPU core with extended instructions and fully static operation
• Includes dual ESCC channels with 32-bit CRC and dual UART channels
• Features a 16550 compatible mimic interface for direct PC/XT/AT bus connectivity
• Provides two DMA channels and individual wait state generators for RAMCS and ROMCS

Applications

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

Procurement Notes

Verify that the specific suffix 'AEG' corresponds to the intended voltage and package configuration within official Zilog documentation. Confirm RoHS compliance status through manufacturer datasheets prior to integration. Ensure design compatibility with the 100-pin QFP footprint and validate signal levels against system requirements.

Selection Notes

Select this component when a static Z80-compatible processor with integrated high-speed serial communication peripherals is required. The inclusion of the 16550 mimic interface simplifies legacy PC bus integration. Consider the 20 MHz performance limit at 3.3V when designing timing-critical sections of the application circuit.

Part Context

This part belongs to the Z80182/Z8L182 family of intelligent peripheral controllers manufactured by Zilog. These devices combine a powerful microprocessor core with extensive serial and parallel I/O capabilities. The family is designed specifically for embedded communication tasks requiring high data throughput and protocol handling.

Replacement Considerations

The Z80182 serves as the primary variant within this product line. Verify functional equivalence regarding pinout and instruction set compatibility before substitution. Consult official cross-reference lists for any updated revisions or alternative packages offered by the manufacturer.