Z8S18020FEC1960

Overview

The Z8S18020FEC1960 is an 8-bit microprocessor based on the Z180 core, operating at a maximum clock frequency of 20 MHz. It features a 20-bit address bus supporting up to 1 MB of memory and an 8-bit bidirectional data bus. The device integrates two DMA channels, two enhanced UARTs with FIFO buffers, two 16-bit programmable reload timers, and a clocked serial I/O port. It operates within a temperature range of 0°C to +70°C and supports multiple low-power modes.

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 baud rate generators and FIFO buffers.
• Supports expanded MMU addressing up to 1 MB and three on-chip wait-state generators.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 software.
• Industrial control applications utilizing integrated timers and interrupt controllers.
• Data acquisition systems employing DMA for efficient peripheral data transfer.
• Communication devices using dual UARTs for asynchronous serial data handling.

Procurement Notes

Verify the specific suffix '1960' against official Zilog documentation to confirm package type and voltage variants, as standard datasheets list QFP, PLCC, and DIP options. Confirm RoHS compliance status through current manufacturer declarations. Check for End-of-Life notices or production discontinuation announcements prior to procurement planning.

Selection Notes

Select this component when Z80 instruction set compatibility is required alongside enhanced on-chip peripherals. Consider the 20 MHz speed rating for performance needs within the commercial temperature range. Evaluate the integrated DMA and UART resources to reduce external component count in system design.

Part Context

This part belongs to the Z8S180/Z8L180 family of enhanced microprocessors. These devices improve upon previous Z80180 models by offering lower power consumption, EMI noise reduction, and additional feature enhancements to ASCIs and DMAs. The family maintains full backward compatibility with existing ZiLOG Z80 devices.

Replacement Considerations

Z8S18020FSG

FAQ

What is the maximum memory addressing capability?

The device supports expanded MMU addressing up to 1 MB via its 20-bit address bus.

How many DMA channels are available?

The processor includes two on-chip DMA channels that can be chain-linked for nonstop operation.