Z8023016PSG

Specialized Overview

The Z8023016PSG is an Enhanced Serial Communications Controller (ESCC) manufactured by Zilog. It features a dual-channel architecture supporting asynchronous, synchronous byte-oriented (IBM Bisync), and synchronous bit-oriented protocols (HDLC, IBM SDLC). The device integrates on-chip baud rate generators, digital phase-locked loops, and crystal oscillators to minimize external logic requirements. It includes a 4-byte transmit FIFO buffer and an 8-byte receive FIFO for improved data handling. The component operates within a voltage range of 4.5V to 5.5V and is housed in a 40-pin Dual In-line Package (DIP) with a width of 0.620 inches (15.75mm).

Specialized Feature Summary

• Dual-channel serial communication controller supporting multiple protocols including HDLC and SDLC.
• Integrated internal baud rate generators and digital phase-locked loops reduce external component dependency.
• Includes 4-byte transmit and 8-byte receive FIFO buffers to enhance data throughput and interrupt efficiency.
• Supports vectored interrupts and DMA request lines for efficient CPU interaction.

Specialized Applications

• Telecommunication systems requiring high-speed serial data transfer.
• Local Area Network (LAN) interface controllers.
• Microprocessor peripheral expansion for 8-bit and 16-bit systems.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature rating. Confirm availability status as legacy components may have limited supply chains. Ensure compatibility with existing system bus timing requirements before integration.

Specialized Selection Notes

Select this component when a dual-channel serial interface with hardware protocol support for SDLC and HDLC is required. Consider the integrated baud rate generation if minimizing external clock circuitry is a priority. Verify that the 40-pin DIP package fits the target PCB layout constraints.

Specialized Part Context

This part belongs to the Z80230 family of Enhanced Serial Communication Controllers. It serves as a specialized interface between microprocessors and serial communication lines, offering greater functionality than standard SCCs through integrated FIFOs and advanced protocol handling capabilities.

Specialized Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the Z80230 or Z85230 series. Verify electrical characteristics and software register compatibility before substituting with other serial controllers.