Z8018008VEG

Overview

The Z8018008VEG is an 8-bit microprocessor unit based on the Z80 architecture, operating at a maximum clock frequency of 8 MHz. It features a single core with an 8-bit data bus width and utilizes a PLCC-68 package for surface mount installation. The device operates within a voltage range of 4.5 V to 5.5 V and supports an extended industrial temperature range from -40°C to +100°C. Key integrated resources include two DMA channels, two UARTs, two programmable timers, and an MMU supporting up to 1 MB of physical memory.

Feature Summary

• Provides full backward compatibility with existing Zilog Z80 CPU code while offering an extended instruction set including 8-bit multiply operations.
• Integrates system functions such as DMA controllers, asynchronous serial communication interfaces (ASCI), and programmable reload timers directly on-chip to reduce external component requirements.
• Includes a Memory Management Unit (MMU) that maps logical 64 KB address space into an extended 1 MB physical addressing range using a common area-banked area scheme.

Applications

• Industrial control systems requiring robust interrupt handling and low power-down modes
• Embedded applications utilizing direct memory access for high-speed data transfers between memory and I/O devices
• Systems requiring multiple asynchronous serial communication channels for modem or peripheral interfacing

Procurement Notes

Verify the specific suffix 'VEG' against official Zilog documentation to confirm lead-free environmental compliance and extended temperature rating specifications. Ensure the procurement source provides valid traceability for this discontinued product line. Confirm package integrity upon receipt due to potential long-term storage conditions associated with end-of-life components.

Selection Notes

Select this component when a Z80-compatible processor with integrated peripherals is required for cost-sensitive designs. Consider the PLCC-68 package constraints for PCB layout if surface mount technology is mandated. Evaluate the 8 MHz speed against system timing requirements, noting that lower speed variants exist within the same family for different performance tiers.

Part Context

This part belongs to the Z80180 series of enhanced microprocessors manufactured by Zilog. The series combines the Z80 CPU core with various on-chip peripherals to create a complete system solution. The Z80180 variant specifically focuses on providing DMA capabilities and expanded memory management without onboard ROM, distinguishing it from other members of the broader Z180/Z8018x family.

Replacement Considerations

Consult official Zilog cross-reference documents for verified substitutes. Potential alternatives may include other members of the Z80180 family with differing clock speeds or packaging options, provided they maintain pin and functional compatibility.