Z8L18020FSC

Overview

The Z8L18020FSC is an 8-bit microprocessor IC based on the Z180 core, manufactured by Zilog. It operates at a maximum clock speed of 20 MHz and features a single core with an 8-bit data bus width. The device is housed in an 80-pin QFP package and supports surface mount mounting types. It functions within an operating temperature range of 0°C to +70°C and utilizes a 3.3V I/O voltage level. Key integrated peripherals include two DMA channels, two UARTs, and an ASCI interface.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while providing extended instructions and faster execution speeds.
• Features two chain-linked DMA channels for high-speed memory-to-memory and I/O transfers.
• Includes two enhanced UARTs with programmable baud rate generators supporting asynchronous data transfer.
• Offers multiple low-power-down modes to reduce consumption during idle or stopped states.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 codebases.
• Industrial control applications utilizing on-chip serial communication interfaces.
• Data acquisition systems leveraging DMA capabilities for efficient peripheral data handling.
• Battery-powered devices utilizing low-power stop modes to extend operational life.

Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm RoHS compliance status prior to integration, as historical batches may not meet current environmental standards. Ensure PCB footprint matches the 80-QFP package dimensions precisely. Validate supply chain sources against manufacturer obsolescence notices to mitigate long-term availability risks.

Selection Notes

Select this processor when Z80 instruction set compatibility is required alongside enhanced on-chip resources. Consider the 80-QFP package if surface mount technology is preferred over DIP alternatives. Evaluate power requirements against the available low-power modes if energy efficiency is critical. Ensure system design accommodates the 3.3V I/O logic levels specified for this variant.

Part Context

This component belongs to the Z8L180 series, which enhances the original Z80180 architecture. It integrates a CPU core with system resources like MMU and timers. The Z180 lineage provides object-code compatibility with the Z80 while adding features such as multiplication instructions and expanded addressing capabilities up to 1 MB.

Replacement Considerations

Z8S18020FSC

FAQ

Does the Z8L18020FSC support direct replacement for Z80 processors?

Yes, it is object-code compatible with the ZiLOG Z80 CPU, allowing for drop-in software compatibility while offering enhanced hardware features.

What is the maximum addressable memory space?

The device supports an expanded MMU addressing capability of up to 1 MB.