Z8523008VSG

Specialized Overview

The Z8523008VSG is an Enhanced Serial Communications Controller (ESCC) manufactured by Zilog. It operates at a frequency of 8 MHz with a supply voltage range of 4.5 V to 5.5 V and a typical operating current of 4 mA. The device supports serial interfaces and is housed in a 44-PLCC surface-mount package. It functions within a temperature range of 0°C to +70°C. This component is part of the Z85230 series and is classified as a communication controller.

Specialized Feature Summary

• Supports multiple synchronous and asynchronous data protocols including SDLC, HDLC, BISYNC, and X.25.
• Includes integrated transmit and receive FIFO buffers to manage data flow efficiently.
• Features vectored interrupt capabilities with daisy-chain support for system integration.

Specialized Applications

• Network interface controllers requiring serial protocol handling.
• Modem control systems utilizing hardware flow control signals.
• Embedded communication subsystems needing DMA or CPU-controlled data transfer.

Specialized Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Check for obsolescence notices or production change notifications that may affect availability or specifications.

Specialized Selection Notes

Select this component when a dedicated ESCC with 8 MHz operation is required. Ensure the design accommodates the 44-PLCC package footprint. Verify that the system voltage aligns with the 4.5 V to 5.5 V operating range. Consider thermal management for the specified commercial temperature range.

Specialized Part Context

This part belongs to the Z85230 family of Enhanced Serial Communications Controllers. It shares architectural similarities with the Z80230 but utilizes a distinct bus interface. The Z85230 variant typically employs a standard parallel data bus without address multiplexing, differentiating it from other members of the broader Z80/Z85 peripheral lineup.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Zilog technical support for legacy replacement options or equivalent modern serial controllers if this component is obsolete.

Specialized FAQ

What is the primary function of the WR7' register?

Write Register 7 Prime (WR7') enables SDLC enhancements such as FIFO configuration, anti-lock features, and specific transmit interrupt behaviors.

How does the ESCC handle interrupts?

The ESCC supports vectored interrupts with a daisy-chain structure using IEI and IEO pins, allowing priority resolution during an Interrupt Acknowledge cycle.

What protocols are supported by the Z8523008VSG?

It supports asynchronous modes, synchronous byte/HDLC, SDLC, BISYNC, X.25, and extended synchronous modes.