Z8523016VEG

Specialized Overview

The Z8523016VEG is an Enhanced Serial Communications Controller (ESCC) manufactured by Zilog. It operates on a 4.5V to 5.5V supply voltage and utilizes a 44-PLCC surface-mount package. The device features two independent serial channels with integrated FIFO buffers, including a 4-byte transmit buffer and an 8-byte receive buffer. It supports multiple communication protocols such as SDLC, HDLC, and asynchronous modes. The component is identified as End-of-Life status.

Specialized Feature Summary

• Supports dual-channel serial data transmission and reception with programmable baud rate generation.
• Integrates hardware FIFO buffers to reduce CPU overhead during high-speed data transfers.
• Provides vectored interrupt capabilities with daisy-chain support for efficient system resource management.

Specialized Applications

• High-performance serial communication interfaces in embedded systems
• Modem control and data terminal equipment applications
• Network controller implementations requiring protocol offloading

Specialized Procurement Notes

Verify the current lifecycle status of this component before integration into new designs. Confirm that the 44-PLCC package dimensions match the target PCB footprint. Ensure power supply rails remain within the specified 4.5V to 5.5V range to maintain signal integrity and prevent damage to the CMOS interface circuitry.

Specialized Selection Notes

Select this component when a dedicated serial controller with hardware protocol handling is required. Compare against the Z85C30 series if lower pin counts are acceptable. Verify compatibility with the host microprocessor bus timing requirements, specifically regarding read/write cycle durations and interrupt acknowledge signals.

Specialized Part Context

This part belongs to the Z85230 family of ESCCs, which serve as successors to the earlier Z85C30 SCC devices. The Z85230 series introduces enhanced features such as larger FIFO buffers and additional control registers compared to its predecessors. It is designed to replace legacy UARTs in complex communication architectures.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consider evaluating the Z8523L series for 3.3V operation requirements or the Z80230 for alternative bus interface timing needs.