Z8S18020VSC00TR

Overview

The Z8S18020VSC00TR is an 8-bit microprocessor based on the Z180 core, manufactured by ZiLOG. It operates at a maximum clock frequency of 20 MHz with static logic capabilities and requires a 3.3 V supply voltage. The device features a 68-pin PLCC package designed for surface mount technology. It includes two asynchronous serial communication interfaces (ASCI) supporting up to 512 Kbps, two 16-bit programmable reload timers, and dual chain-linked DMA channels. The processor supports an expanded MMU addressing range of up to 1 MB and offers multiple low-power down modes.

Feature Summary

• Code compatible with ZiLOG Z80 CPU while providing extended instructions and faster execution speeds.
• Integrated dual channel DMA controller allowing for nonstop operation through chain-linking capabilities.
• On-chip oscillator and generator with a clock-doubler feature to reduce system cost via lower-frequency crystals.
• Enhanced ASCI channels featuring ESCC-like baud rate generators and 4-byte FIFO buffers to prevent overrun errors.

Applications

• Embedded systems requiring backward compatibility with legacy Z80 codebases.
• Industrial control applications utilizing the integrated UARTs and timer resources.
• Data acquisition systems leveraging the high-speed DMA channels for memory-to-memory transfers.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm RoHS compliance status and specific manufacturing lot dates prior to integration. Ensure proper handling procedures are followed as the device exhibits moisture sensitivity. Review official product discontinuance notifications for lifecycle management planning.

Selection Notes

Select this variant when a 68-pin PLCC package is required for the specific PCB layout constraints. Choose this model over QFP or DIP versions if surface mount assembly processes are mandated. Ensure the design accommodates the 3.3 V I/O voltage levels and the 0°C to +70°C operating temperature range specified for this part number.

Part Context

This component belongs to the Z8S180 series, which represents an enhanced version of the Z180 architecture. It builds upon the original Z80180 models by incorporating power-saving modes and EMI noise reduction features. The series maintains full object-code compatibility with existing ZiLOG Z80 devices while offering improved performance and additional peripheral integration.

Replacement Considerations

Public confirmed substitute part numbers: Z8S18020VSG, Z8S18020FEG, Z8L18020FSG.