Z8L18020VSG

Overview

The Z8L18020VSG is a low-power microprocessor based on the Z180 core, operating at a maximum clock frequency of 20 MHz with a 3.3 V supply voltage. It features an 8-bit data bus and is housed in a 68-pin PLCC package for surface mount installation. The device supports an operating temperature range from 0°C to +70°C and includes two timers/counters and UART interfaces.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Incorporates two chain-linked DMA channels for high-speed memory and I/O transfers.
• Features three low power-down modes to significantly reduce energy consumption during idle states.
• Includes on-chip interrupt controllers, wait-state generators, and an oscillator for system integration.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 software.
• Industrial control applications utilizing integrated serial communication interfaces.
• Battery-powered devices benefiting from multiple low-power operational modes.

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels due to end-of-life status. Confirm RoHS compliance details and moisture sensitivity levels prior to assembly. Ensure storage conditions meet humidity requirements to prevent damage. Validate pin compatibility with existing PCB footprints before procurement.

Selection Notes

Select this component when Z80 instruction set compatibility is required alongside enhanced peripheral integration. Consider the 3.3 V operating voltage and PLCC-68 package constraints for board design. Evaluate the need for specific low-power modes against system wake-up latency requirements. Ensure external clock sources match the supported frequency specifications.

Part Context

This part belongs to the Z8L180 series, which are enhanced versions of the Z8S180/Z8L180 microprocessors. These processors combine the Z80 CPU core with additional resources like DMA, ASCI, and timers. The Z8L180 variant specifically denotes low-power operation compared to the standard Z8S180.

Replacement Considerations

Public confirmed substitute part numbers: Z8L18020FSG (QFP-80 package), Z8L18020PEC (PDIP-64 package). Verify package footprint differences and pinout compatibility before substitution.