Z8S18020PSC1960

Overview

The Z8S18020PSC1960 is a microprocessor based on the Z180 core, manufactured by ZiLOG. It features an 8-bit data bus and supports clock speeds up to 20 MHz. The device operates at 5V with an operating temperature range of 0°C to +70°C. It is housed in a 64-pin DIP package. Key integrated resources include two DMA channels, two ASCI UARTs, two programmable reload timers, and a CSI/O channel. The processor includes an MMU for expanded addressing up to 1 MB and offers multiple low-power modes.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while providing extended instructions and faster execution speeds.
• Integrated system resources including two chain-linked DMA channels and three on-chip wait-state generators.
• Features two enhanced UARTs with ESCC-like Baud Rate Generators supporting asynchronous data transfer rates up to 512 Kbps.
• Includes an on-chip oscillator/generator and a clock-doubler feature allowing internal speed to be twice the external clock frequency.

Applications

• Embedded systems requiring backward compatibility with Z80 instruction sets.
• Industrial control applications utilizing integrated serial communication interfaces.
• Memory management intensive designs leveraging the expanded 1 MB addressing capability.
• Low power consumption scenarios utilizing specific stop and idle modes.

Procurement Notes

Verify component authenticity through official manufacturer documentation or authorized distributors. Confirm package type and voltage specifications match system requirements. Check for end-of-life status as this model may be discontinued. Ensure handling procedures account for humidity sensitivity if applicable. Validate pinout compatibility with existing PCB layouts before integration.

Selection Notes

Select this processor when Z80 code compatibility is required alongside enhanced peripheral integration. Consider the 64-pin DIP package for through-hole mounting needs. Evaluate the 20 MHz speed against system timing constraints. Review power consumption profiles across different operational modes for energy-sensitive designs. Assess the need for expanded memory addressing via the built-in MMU.

Part Context

This component belongs to the Z8S180 series, which enhances the original Z80180 design. The series offers improved performance, reduced power consumption, and additional I/O features compared to predecessors. It maintains object-code compatibility with legacy Z80 devices while introducing new capabilities like chain-linked DMA and enhanced serial ports.

Replacement Considerations

Z8S18020PSC

FAQ

Does the Z8S18020PSC1960 support direct replacement for standard Z80 processors?

Yes, it is 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 expanded MMU addressing up to 1 MB.