Z8S18020FSG1960

Overview

The Z8S18020FSG1960 is a microprocessor based on the Z180 core, operating at a maximum clock frequency of 20 MHz. It features an 8-bit data bus and supports up to 1 MB of addressable memory via its expanded MMU. The device operates at 3.3 V with an I/O voltage of 3.3 V. It is housed in an 80-pin QFP package and supports surface mount installation. The component includes two DMA channels, two UARTs, and two timers.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while providing extended instructions and faster execution speeds.
• Features two chain-linked DMA channels for nonstop high-speed data transfers between memory and I/O devices.
• Includes two enhanced UARTs with ESCC-like Baud Rate Generators supporting asynchronous data transfer rates up to 512 Kbps.
• Offers multiple low power-down modes including Stop Mode and Standby Mode to reduce current consumption.

Applications

• Embedded systems requiring backward compatibility with Z80 instruction sets.
• Industrial control applications utilizing integrated DMA and serial communication interfaces.
• Battery-powered devices leveraging low power-down operational modes.

Procurement Notes

Verify the specific ordering suffix against official datasheets to confirm voltage levels and package type. Confirm availability status as distribution channels may list obsolete or limited inventory items. Ensure environmental compliance documentation matches project requirements before finalizing procurement orders.

Selection Notes

Select this component when Z80 code compatibility is required alongside enhanced peripheral integration. Consider the 80-pin QFP package constraints for PCB layout. Evaluate the 3.3 V operating voltage against system logic levels. Verify that the 20 MHz speed meets real-time processing requirements for the target application.

Part Context

This part belongs to the Z8S180 series, which enhances the original Z80180 design. The series integrates a Z180 CPU core with on-chip peripherals such as DMA controllers, ASCI ports, and programmable reload timers. It bridges legacy Z80 software ecosystems with modern performance and power efficiency improvements.

Replacement Considerations

Z8L18020FSG