Z8523L10VSG

Specialized Overview

The Z8523L10VSG is a specialized serial communication controller manufactured by Zilog, designed for high-performance data link control applications. It operates within a supply voltage range of 3V to 3.6V and supports clock frequencies up to 10 MHz. The device is housed in a 44-PLCC (J-Lead) surface-mount package, suitable for space-constrained designs. It features an 8-bit external data bus and includes on-chip RAM for buffering. The component is classified as obsolete, with official discontinuation notifications issued in April 2024 and April 2025.

Specialized Feature Summary

• Supports multiple synchronous and asynchronous communication protocols including HDLC, SDLC, X.25, and BISYNC.
• Integrates internal FIFO buffers and modem control I/O lines for streamlined data handling.
• Capable of operating in extended temperature ranges suitable for industrial environments.

Specialized Applications

• Serial communication interfaces in embedded systems requiring protocol independence.
• Data link control units in telecommunications equipment.
• Industrial automation controllers utilizing TDMA or dedicated serial links.

Specialized Procurement Notes

This component is officially listed as obsolete by the manufacturer. Procurement should focus on verifying the authenticity of remaining stock from authorized distributors or secondary market suppliers. Buyers must review Product Change Notifications (PCNs) regarding assembly origin and packaging changes. Due to the end-of-life status, long-term availability is not guaranteed, and alternative sourcing strategies should be evaluated immediately.

Specialized Selection Notes

Designers should consider the 10 MHz maximum clock speed and 3V-3.6V supply requirements when integrating this controller into existing architectures. The 44-PLCC package necessitates specific PCB footprint planning for J-leads. Given the obsolete status, engineers must assess the risk of supply chain disruption and evaluate potential functional equivalents that offer similar protocol support and interface compatibility.

Specialized Part Context

The Z8523 series belongs to Zilog's family of serial communication controllers, often used alongside Z80 microprocessors. The Z8523L10 variant specifically targets applications requiring robust hardware-level protocol handling without heavy CPU intervention. It serves as a bridge between parallel processor buses and serial transmission lines, reducing system logic complexity.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Zilog's official obsolescence notices for recommended transition paths or contact the manufacturer directly for legacy support options.