Z8523310FSG

Specialized Overview

The Z8523310FSG is a single-channel Enhanced Mono Serial Communication Controller (EMSCC) from Zilog, operating at a maximum clock frequency of 10 MHz. It features a 4-byte transmit FIFO and an 8-byte receive FIFO to reduce CPU overhead. The device supports full-duplex data communications with software compatibility to the SCC family. It operates within a supply voltage range of +4.50 V to +5.50 V and includes hardware interface simplifications such as relaxed databus setup times. The component is housed in a 44-pin PQFP package.

Specialized Feature Summary

• Integrated 4-byte transmit and 8-byte receive FIFOs for improved packet handling
• Automatic SDLC frame management including flag transmission and ABORTed frame handling
• Simplified CPU hardware interface with reduced external logic requirements
• Software compatible with existing Zilog SCC and ESCC designs

Specialized Applications

• Full-duplex serial data communication systems
• SDLC protocol implementation
• Microprocessor-based embedded controllers requiring serial I/O expansion

Specialized Procurement Notes

Verify the specific suffix '10FSG' against the manufacturer's current ordering information to confirm pinout and package configuration. Ensure that the system design accommodates the specified 5V supply voltage and temperature range constraints defined in the official datasheet before finalizing procurement.

Specialized Selection Notes

Select this component when a single-channel serial controller with integrated FIFOs is required to minimize processor intervention. It serves as a direct replacement for legacy SCC designs where enhanced performance and simplified interface timing are necessary. Verify that the target microprocessor architecture supports the active-low signal conventions and interrupt acknowledge generation methods described in the specification.

Specialized Part Context

The Z8523310FSG belongs to the Z85233 EMSCC series, which represents an evolution of Zilog's original SCC technology. This series introduces Superintegration Technology to enhance data throughput and simplify system architecture compared to standard SCC models.

Specialized Replacement Considerations

The Z85233 is functionally related to the Z85230 ESCC but provides only Channel A support. Direct substitution requires verifying that the application does not require dual-channel operation.