Z8523316FSC

Specialized Overview

The Z8523316FSC is an Enhanced Mono Serial Communication Controller (EMSCC) from the Zilog SCC family. It operates at a maximum clock frequency of 16 MHz and supports a supply voltage range of 4.50 V to 5.50 V. The device features a single channel with a 4-byte transmit FIFO and an 8-byte receive FIFO. It utilizes Superintegration technology to reduce CPU overhead and simplify SDLC packet handling. The component is housed in a 44-pin PQFP package.

Specialized Feature Summary

• Integrated 4-byte transmit and 8-byte receive FIFOs for reduced CPU intervention
• Automatic SDLC flag transmission and frame handling capabilities
• Software-generated interrupt acknowledge signal (/INTACK)
• Simplified CPU hardware interface requiring less external logic

Specialized Applications

• Full-duplex data communications controller applications
• SDLC protocol implementation systems
• Microprocessor families requiring serial communication interfaces

Specialized Procurement Notes

Verify the specific suffix '16FSC' against the manufacturer's current ordering information to confirm package type and temperature grade. Ensure the procurement source provides valid documentation matching the DC 4058-03 specification sheet. Confirm that the device meets the required 4.5V to 5.5V operating voltage constraints for your system design.

Specialized Selection Notes

Select this component when a single-channel serial communication solution is required with minimal CPU overhead. The EMSCC architecture is suitable for designs needing automatic SDLC handling and FIFO buffering. Compare performance requirements against the standard SCC or ESCC families if multiple channels are needed. Verify that the 16 MHz speed rating aligns with the system bus timing constraints.

Specialized Part Context

The Z85233 is part of Zilog's SCC family, introduced in 1981, representing an evolution of the original SCC design. It serves as the single-channel variant of the Z85230 ESCC. The device leverages Superintegration technology to offer improved data handling and reduced interface logic compared to its predecessors.

Specialized Replacement Considerations

The Z85230 ESCC is the dual-channel counterpart within the same family. Standard SCC devices may be considered but lack the enhanced FIFO and SDLC features. Verify pin compatibility and software register mapping before substituting with other SCC family members.