Z8L18220FSG

Overview

The Z8L18220FSG is a static microprocessor from the Z8L182 family, utilizing the Z8S180 core. It operates at a maximum clock frequency of 20 MHz with a 3.3 V supply voltage. The device integrates two ESCC channels with 32-bit CRC, two UART channels, and three 8-bit parallel I/O ports. It features a 16550 compatible MIMIC interface for direct connection to PC, XT, or AT buses. The component is housed in an 80-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
• Provides two UART channels and three 8-bit parallel I/O ports
• Features on-chip wait state generators and individual RAMCS/ROMCS control

Applications

• Modem applications including V.Fast standards
• Fax machine controllers
• Voice messaging systems
• Communications equipment requiring data compression and error correction

Procurement Notes

Verify the specific suffix FSG against official datasheets to confirm package type and temperature range. Confirm RoHS compliance status through manufacturer documentation. Ensure compatibility with 3.3 V logic levels and 20 MHz static operation requirements for the target design.

Selection Notes

Select this component when a fully static Z80/Z180 code-compatible processor is required with integrated serial communication peripherals. It is suitable for designs needing direct PC bus emulation via the 16550 MIMIC interface. Consider the 80-pin QFP package constraints and 3.3 V power supply specifications during board layout.

Part Context

This part belongs to the Z8L182 series, which are smart peripheral controllers combining a Z8S180 MPU core with ESCC and 16550 MIMIC interfaces. The Z8L182 variant specifically denotes low-power 3.3 V operation compared to the standard 5 V Z80182 series.

Replacement Considerations

The Z8018220AEG is a documented substitute within the same family, offering similar functionality but operating at 5 V and housed in a 100-pin package.