Z8523L16VSG

Specialized Overview

The Z8523L16VSG is a CMOS Serial Communications Controller manufactured by Zilog, Inc. It operates within a voltage range of 4.5V to 5.5V and supports a maximum clock frequency of 8 MHz. The device features two independent serial I/O channels and utilizes a 44-pin PLCC surface-mount package. It supports multiple communication protocols including asynchronous, synchronous byte, HDLC, SDLC, X.25, BISYNC, and extended synchronous modes. Data encoding methods include NRZ, NRZI-space, Biphase-mark (FM1), Biphase-space (FM0), and Manchester coding.

Specialized Feature Summary

• Dual-channel serial interface architecture supporting simultaneous independent operation
• Integrated modem control input/output lines for direct peripheral management
• Support for complex protocol handling including HDLC, SDLC, and X.25
• Flexible data encoding options including Manchester and NRZI variants

Specialized Applications

• High-speed serial communication interfaces in industrial control systems
• Modem control units requiring integrated status FIFO capabilities
• Embedded systems utilizing HDLC or SDLC protocol stacks
• X.25 network terminal equipment

Specialized Procurement Notes

Verify the specific suffix 'L' against official Zilog documentation to confirm pinout compatibility and electrical characteristics relative to other Z8523 family members. Confirm RoHS compliance status as older ceramic or standard plastic packages may not meet current environmental regulations. Validate that the 44-PLCC package matches the target PCB footprint and soldering profile requirements.

Specialized Selection Notes

Select this component when dual-channel serial control with integrated protocol support is required. Ensure the system design accommodates the 44-pin PLCC package constraints. Verify that the 8 MHz maximum clock speed meets the baud rate requirements of the application. Consider the operating temperature range if deployed in harsh environments.

Specialized Part Context

This part belongs to the Z8523 SCC family, designed for versatile serial data transmission. It serves as a bridge between parallel microprocessor buses and serial communication lines. The device integrates significant on-chip RAM for buffer management, reducing host processor overhead during high-throughput data transfers.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineering teams must consult Zilog's official obsolescence notices or cross-reference lists for verified alternatives.