Z8023016VSG

Specialized Overview

The Z8023016VSG is an Enhanced Serial Communications Controller (ESCC) manufactured by Zilog. It features a Z80-compatible multiplexed address/data bus interface and operates at clock frequencies up to 16 MHz. The device integrates two independent serial channels, each equipped with a 4-byte transmit FIFO and an 8-byte receive FIFO. It supports asynchronous, synchronous, and SDLC protocols with hardware CRC generation and checking. Power supply requirements are 4.5V to 5.5V, with an operating temperature range of 0°C to +70°C. The component is housed in a 44-pin PLCC package.

Specialized Feature Summary

• Dual-channel architecture supporting independent asynchronous, synchronous, and SDLC data communications
• Integrated FIFO buffers for efficient block transfer operations under CPU or DMA control
• Hardware-based Cyclic Redundancy Check (CRC) generation and verification for SDLC frames
• Vectored interrupt capability with programmable priority levels and daisy-chain support

Specialized Applications

• High-speed serial communication interfaces in embedded systems
• Network controller peripherals requiring protocol offloading
• Industrial automation equipment utilizing RS-232/RS-422/RS-485 standards

Specialized Procurement Notes

Verify the specific suffix 'VSG' against the manufacturer's current ordering guide to confirm package type and environmental compliance status. Confirm availability as this component may be subject to discontinuation notices. Ensure compatibility with existing system voltage levels and bus timing requirements before procurement.

Specialized Selection Notes

Select this model when a Z80-bus compatible serial controller with enhanced FIFO capabilities is required. Compare against the Z85230 variant if a standard MOS bus interface is preferred instead of the multiplexed Z80 interface. Evaluate the 16 MHz speed rating against system clock constraints and ensure the PLCC package fits the target PCB footprint.

Specialized Part Context

This component belongs to the Z80230/Z85230 family of Enhanced Serial Communications Controllers. It serves as a peripheral interface between microprocessors and serial communication lines. The Z80230 variant specifically targets systems utilizing the Zilog Z80 processor architecture or compatible buses, offering backward compatibility with earlier SCC designs while adding modern FIFO and interrupt enhancements.

Specialized Replacement Considerations

The Z85230 series offers similar functionality but utilizes a standard MOS bus interface rather than the Z80 multiplexed bus. Verify pinout compatibility and bus timing differences before substitution. No direct pin-for-pin replacements exist within the same family due to the distinct interface requirements.