Z16C3220FSC

Overview

The Z16C3220FSC 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 high data throughput. The device supports full-duplex channels operating at speeds up to 20 Mbit/sec, featuring two baud rate generators and a digital phase-locked loop for clock recovery. It includes 32-byte data FIFOs for both receiver and transmitter functions. The IUSC operates on a 4.5V to 5.5V supply voltage with a typical current consumption of 7mA. It is housed in a 68-pin PLCC package and supports bus interfaces compatible with the 680X0 and 8086 families.

Feature Summary

• Dual-channel DMA with 32-bit addressing and support for single buffer, pipelined, array-chained, and linked-list modes.
• Multiprotocol operation supporting asynchronous, HDLC/SDLC, byte-oriented synchronous, and transparent Bisync formats.
• Flexible bus interface configurable for 8 or 16-bit data widths, directly supporting multiplexed and non-multiplexed buses.
• Integrated time slot assigners for ISDN, T1, and E1 applications with programmable throttling of DMA bus occupancy.

Applications

• High-speed serial data communications requiring low CPU overhead.
• ISDN, T1, and E1 telecommunication systems utilizing time slot assignment.
• Embedded systems requiring direct connection to 680X0 or 8086 family microprocessors.

Procurement Notes

Verify component authenticity through authorized distributors or manufacturer channels. Confirm the specific suffix 'FSC' matches the required temperature range and package variant against the official datasheet. Check for end-of-life status or obsolescence notices prior to procurement planning.

Selection Notes

Select this component when system requirements demand integrated serial control and DMA functionality to minimize board space and chip count. Ensure the host processor bus timing aligns with the IUSC's flexible interface options. Verify that the 68-pin PLCC package fits the available PCB footprint constraints.

Part Context

The Z16C3220FSC belongs to the Z16C32 IUSC series, designed as a multiprotocol datacommunications device. It combines a fast serial controller with high-performance DMA to reduce processing overhead compared to discrete solutions. The series supports various protocols including MIL-STD-1553B and X.21.

Replacement Considerations

Consult Zilog documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully if considering alternative manufacturers.