Z8523016VEC00TR

Specialized Overview

The Z8523016VEC00TR is a Serial Communication Controller (SCC) from the ZiLOG Z85230 family, designed for high-performance serial data transmission. It features dual full-duplex channels and supports processing speeds up to 5 Mbps. The device accommodates a crystal oscillator, baud rate generator, and digital phase-locked loop on each channel. It handles multi-protocol formats including async, monosync, bisync, SDLC/HDLC, and SDLC/HDLC loop modes. Encoding options include NRZI, FM0, FM1, and Manchester. Error detection utilizes CRC-16 or CRC-CCITT algorithms. The component includes a 4-byte transmit FIFO and an 8-byte receive FIFO to reduce CPU overhead. It is housed in a 44-pin PLCC package.

Specialized Feature Summary

• Dual full-duplex communication channels with integrated baud rate generation and digital phase-locked loops
• Supports multiple protocol formats including asynchronous, bisync, and SDLC/HDLC standards
• Integrated error detection using CRC-16 or CRC-CCITT algorithms
• On-chip FIFO buffers to minimize processor intervention during data transfer

Specialized Applications

• Network interface implementations requiring reliable serial data handling
• Embedded systems utilizing HDLC or Bisync communication protocols
• Industrial control systems needing robust noise immunity and low external logic requirements

Specialized Procurement Notes

Verify the specific suffix '00TR' against official manufacturer documentation to confirm tape-and-reel packaging status, as standard datasheets often list 'VEC' variants without explicit reel specifications. Confirm RoHS compliance status directly with the supplier, as older SCC families may have non-compliant manufacturing runs. Ensure the operating temperature range matches your system's environmental constraints before finalizing procurement.

Specialized Selection Notes

Select this component when dual-channel synchronous or asynchronous serial communication is required at speeds up to 5 Mbps. It is suitable for designs needing hardware-assisted protocol handling to reduce CPU load. Compare against the Z85233 if only a single channel is necessary, or consider the Z16C30 series for higher throughput requirements exceeding 5 Mbps. Verify pin compatibility with existing PCB layouts due to the 44-pin PLCC form factor.

Specialized Part Context

This part belongs to the Z85230 enhanced SCC family, which improves upon earlier Z80C30/Z85C30 models by reducing CPU overhead through advanced packet handling and cycle access recovery. It shares architectural similarities with the Z80230 but offers optimized features for easier programming. The Z85230 series represents a mature solution for legacy and modern embedded networking applications requiring standardized serial interfaces.

Specialized Replacement Considerations

Direct functional substitutes within the same package include other Z85230 variants such as Z8523010VEC or Z8523008VEC, differing primarily in maximum clock speed ratings. For single-channel applications, the Z85233 series serves as a compatible alternative. Higher-speed replacements include the Z16C30 or Z16C35 families, though these may require software adaptation due to increased FIFO depths and DMA capabilities.