Z8523020VSC

Specialized Overview

The Z8523020VSC is a dual-channel Serial Communication Controller (SCC) from the Z85230 enhanced family, manufactured by Zilog. It operates at a maximum clock frequency of 20 MHz and supports data transmission rates up to 5 Mbps. The device utilizes a 44-pin Plastic Leadless Chip Carrier (PLCC) package with J-bend terminals and a 1.27 mm pitch. Designed for commercial temperature ranges, it functions between 0 °C and 70 °C. Key specifications include dual full-duplex channels, multi-protocol support, and integrated FIFO buffers.

Specialized Feature Summary

• Dual full-duplex serial communication channels
• Multi-protocol format support including async, bisync, and SDLC/HDLC
• Integrated transmit and receive FIFO buffers
• Hardware CRC error detection capabilities

Specialized Applications

• Network interface implementations requiring high-speed serial connectivity
• Embedded systems utilizing asynchronous or synchronous data transfer
• Industrial control applications operating within commercial temperature limits

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix VSC corresponds to the required PLCC package and commercial temperature range. Check current availability status as legacy components may be subject to discontinuation notices.

Specialized Selection Notes

Select this model when dual-channel performance up to 20 MHz is required. Ensure system voltage aligns with standard CMOS logic levels. Compare against Z80230 variants if multiplexed bus interfaces are necessary instead of nonmultiplexed configurations.

Specialized Part Context

This component belongs to the Z85230 enhanced SCC family, designed to reduce CPU overhead compared to standard controllers. It shares architectural similarities with the Z8523016VSC but offers increased processing speed. The part integrates modem control I/Os usable as general-purpose inputs and outputs.

Specialized Replacement Considerations

The Z8523016VSC serves as a functional substitute with identical pinouts and features, limited only by a lower 16 MHz clock speed. Verify software compatibility regarding timing constraints when substituting.