Z16C3220VSG

Specialized Overview

The Z16C3220VSG is a CMOS Integrated Universal Serial Controller (IUSC) manufactured by Zilog. It integrates dual-channel DMA with a high-speed serial communications channel to facilitate higher data throughput than discrete combinations. The device supports full-duplex channels operating at speeds up to 20 Mbit/sec, utilizing two baud rate generators and a digital phase-locked loop for clock recovery. It features 32-byte FIFOs for both receiver and transmitter and supports multiprotocol operation including Async, HDLC/SDLC, Bisync, and Synchronous Byte Oriented modes. The flexible bus interface directly supports 680X0 and 8086 families in 8 or 16-bit configurations. The component is housed in a 68-pin PLCC package.

Specialized Feature Summary

• Dual-channel DMA with 32-bit addressing and support for single buffer, pipelined, array-chained, and linked-list transfer modes.
• Multiprotocol serial communication capability supporting Async, HDLC/SDLC, Bisync, and synchronous byte-oriented formats.
• Flexible bus interface compatible with multiplexed and non-multiplexed buses, supporting Intel and Motorola architectures.
• Integrated hardware CRC generation and checking for synchronous protocols.

Specialized Applications

• ISDN, T1, and E1 (CEPT) time slot assignment applications
• High-throughput serial data communications systems
• Systems requiring direct connection to 680X0 or 8086 family microprocessors

Specialized Procurement Notes

Verify the specific suffix 'VSG' against official documentation to confirm voltage range and temperature grade, as datasheets may list variants like 'VSC'. Confirm end-of-life status and lead times with authorized distributors, as this component series may be discontinued. Ensure RoHS compliance requirements are met if applicable, as older Zilog parts often lack certification.

Specialized Selection Notes

Select the Z16C32 when system design requires integrated DMA and serial control to reduce CPU overhead. Choose this part for applications needing support for multiple serial protocols without external protocol controllers. Verify that the host processor bus timing matches the IUSC's wait state requirements and that the 68-pin PLCC package fits the PCB layout constraints.

Specialized Part Context

The Z16C32 belongs to the IUSC family of integrated universal serial controllers designed by Zilog. This series was engineered to replace discrete serial controller and DMA chip combinations, offering reduced board space and improved performance through on-chip integration of high-speed serial channels and dual DMA engines.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult Zilog technical support or authorized distributors for current equivalent components or migration guides from the Z16C32 family.