Z8S18020VSC1960

Overview

The Z8S18020VSC1960 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 Memory Management Unit. The device integrates two DMA channels, two asynchronous serial communication interfaces (ASCI), two programmable reload timers, and a clocked serial I/O port. It operates within a temperature range of 0°C to +70°C and utilizes a PLCC-68 package.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Includes two chain-linked DMA channels for high-speed data transfers between memory and I/O devices.
• Features three low-power-down modes to reduce energy consumption during idle or specific operational states.
• Integrates on-chip interrupt controllers and wait-state generators for flexible system timing and control.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 software.
• Industrial control applications utilizing integrated UARTs and timer resources.
• Data acquisition systems employing DMA for efficient peripheral data handling.
• Battery-powered devices leveraging low-power-down operational modes.

Procurement Notes

Verify the exact package type and voltage specifications against the official datasheet before integration. Confirm that the 20 MHz speed grade meets the system timing requirements. Ensure the PLCC-68 footprint matches the PCB layout design. Check for any specific ordering suffixes that may indicate different temperature ranges or packaging variations.

Selection Notes

Select this component when Z80 instruction set compatibility is required alongside enhanced on-chip peripherals. Consider the Z8S180 series for designs needing integrated DMA and dual UARTs without external logic. Evaluate the power consumption characteristics if battery operation is a constraint. Compare pin counts and package options to ensure mechanical fit within the target enclosure.

Part Context

This part belongs to the Z8S180 family, which enhances the original Z80180 architecture. The Z180 core provides object-code compatibility with the Z80 while adding significant performance improvements. The family includes variants with different clock speeds and package styles to suit various embedded application needs.

Replacement Considerations

Public confirmed substitute part numbers: Z8S18020FSG1960, Z8L18020FSG, Z8018020FSC.