Z8L18020PSG

Overview

The Z8L18020PSG is a low-power microprocessor based on the Z180 core, manufactured by ZiLOG. It features an 8-bit data bus and supports maximum clock speeds of 20 MHz. The device operates at a supply voltage of 3.3 V and includes two enhanced UARTs, two 16-bit counter/timers, and two chain-linked DMA channels. It utilizes a DIP-60 package for through-hole mounting and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while offering extended instructions and faster execution speeds.
• Incorporates two chain-linked DMA channels allowing nonstop operation between peripherals.
• Features three low power-down modes including Stop Mode and Standby Mode to reduce current consumption.
• Includes an on-chip oscillator/generator and expanded MMU addressing up to 1 MB.

Applications

• Embedded systems requiring backward compatibility with Z80 architecture.
• Industrial control applications utilizing integrated UART and timer resources.
• Data acquisition systems employing DMA for high-speed memory transfers.

Procurement Notes

Verify component authenticity against official ZiLOG documentation before integration. Confirm that the specific ordering suffix corresponds to the required package type and voltage specifications. Ensure environmental compliance requirements match the project constraints. Review the latest product change notices for any manufacturing updates or lifecycle status changes prior to final procurement decisions.

Selection Notes

Select this component when system design requires Z80 instruction set compatibility alongside enhanced peripheral integration. Consider the 3.3 V operating voltage and DIP-60 package constraints during PCB layout. Evaluate the available low-power modes if energy efficiency is a critical design parameter. Ensure the application does not require a watchdog timer, as this specific variant lacks that feature.

Part Context

This microprocessor belongs to the Z8L180 series, which represents an enhanced version of the Z180 architecture. It combines the proven Z80 core with additional on-chip resources such as DMA controllers and asynchronous serial interfaces. The series is designed to provide improved performance and lower power consumption compared to earlier generations while maintaining software compatibility.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.