Z8L18020FSG

Overview

The Z8L18020FSG is an 8-bit microprocessor based on the Z180 core, manufactured by ZiLOG. It operates at a maximum clock frequency of 20 MHz with a single core and an 8-bit data bus width. The device functions at a supply voltage of 3.3 V and supports I/O voltages of 3.3 V. It is housed in an 80-pin QFP package designed for surface mount technology. The operating temperature range spans from 0°C to +70°C. Key integrated peripherals include two timers/counters and UART interfaces.

Feature Summary

• Code compatible with the ZiLOG Z80 CPU while providing extended instructions and enhanced performance.
• Features two chain-linked DMA channels for high-speed memory and I/O transfers.
• Includes two enhanced UARTs supporting asynchronous serial communication up to 512 Kbps.
• Offers multiple low-power-down modes to reduce energy consumption during idle states.

Applications

• Industrial control systems requiring Z80 compatibility with enhanced features
• Embedded applications needing efficient power management
• Data acquisition systems utilizing DMA capabilities

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level prior to soldering. Check for obsolescence notices as this series may be subject to discontinuation. Ensure proper handling procedures are followed due to humidity sensitivity requirements during storage and assembly.

Selection Notes

Select this model when Z80 instruction set compatibility is required alongside modern enhancements like DMA chaining and low-power modes. Consider the 3.3V operation requirement and 80-pin QFP package constraints. Evaluate if the 20MHz speed meets system timing needs compared to lower-frequency variants within the Z8L180 family.

Part Context

This part belongs to the Z8L180 series, which represents an enhanced version of the classic Z80 architecture. The Z180 core integrates significant peripheral functionality directly onto the die, reducing external component count. This specific variant focuses on low-power operation at 3.3V, distinguishing it from the 5V Z8S180 counterparts.

Replacement Considerations

Z8L18020VSG (PLCC-68 package)

FAQ

Is the Z8L18020FSG fully backward compatible with Z80 software?

Yes, it is code compatible with the ZiLOG Z80 CPU, though it includes an extended instruction set.

What is the maximum baud rate supported by the UARTs?

The two enhanced UARTs support asynchronous data transfer rates of up to 512 Kbps.