Z8S18020PSG1960

Overview

The Z8S18020PSG1960 is a microprocessor based on the Z180 core, operating at a maximum clock frequency of 20 MHz. It features an 8-bit data bus width and supports up to 1 MB of addressable memory via its expanded MMU. The device operates within a temperature range of 0°C to +70°C and utilizes a 64-pin DIP package. Key integrated peripherals include two DMA channels, two asynchronous serial communication interfaces (ASCI), two programmable reload timers, and a clocked serial I/O channel.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Integrated dual chain-linked DMA channels for high-speed memory and I/O transfers.
• On-chip interrupt controllers and three wait-state generators for flexible system timing.
• Low power-down modes including Stop, Sleep, and Halt to reduce energy consumption.

Applications

• Industrial control systems requiring robust serial communication
• Embedded applications needing direct memory access capabilities
• Legacy Z80 system upgrades with enhanced performance
• Battery-powered devices utilizing low-power stop modes

Procurement Notes

Verify the specific suffix 'PSG1960' against official documentation, as standard datasheets typically list 'PSG' for 64-DIP packages without the numeric suffix. Confirm RoHS compliance status and moisture sensitivity levels prior to procurement. Ensure the supplier provides valid traceability documents given the component's potential end-of-life status.

Selection Notes

Select this component when backward compatibility with Z80 software is required alongside enhanced peripheral integration. Consider the 64-pin DIP package for through-hole mounting requirements. Evaluate the 20 MHz speed against system latency needs and ensure the 5V logic levels match the target board design.

Part Context

This part belongs to the Z8S180 series, which enhances the original Z80 architecture with additional on-chip resources. The Z180 core combines a high-performance CPU with integrated DMA, UARTs, and timers, serving as a bridge between legacy Z80 designs and more complex modern embedded requirements.

Replacement Considerations

Check for Z8S180 variants with different speed grades or packaging options such as PLCC or QFP if pin count flexibility is needed. Verify functional equivalence with Z8L180 models for low-power applications, ensuring voltage and interface compatibility remain consistent.