Z16C3220VSC1660

Overview

The Z16C3220VSC1660 is a multiprotocol data communications device from the IUSC series, manufactured by Zilog. It integrates dual-channel DMA with a high-speed serial controller to facilitate high throughput. The component operates on a 4.5V to 5.5V supply with a typical current of 7mA. It supports data rates up to 20 Mbit/sec and provides 32-byte FIFOs for both receiver and transmitter. The device features two full-capacity 20 MHz DMA channels with 32-bit addressing and 16-bit data transfers. It is housed in a 68-pin PLCC package and functions as a controller interface.

Feature Summary

• Dual-channel DMA with support for single buffer, pipelined, array-chained, and linked-array chained modes.
• Multiprotocol operation including asynchronous, HDLC/SDLC, byte-oriented synchronous, and transparent Bisync.
• Flexible bus interface configurable for 8 or 16 bits, supporting direct connection to microprocessors.
• Integrated digital phase-locked loop for clock recovery and programmable baud rate generators.

Applications

• ISDN, T1, and E1 (CEPT) applications using time slot assigners.
• Systems requiring high-speed serial data transfer with minimal CPU overhead.
• Applications supporting MIL-STD-1553B protocols.

Procurement Notes

Verify component status before ordering, as this part may be discontinued. Confirm that the 68-PLCC package matches your PCB footprint requirements. Ensure voltage levels align with the 4.5V to 5.5V specification. Check for RoHS compliance status if environmental regulations apply to your project. Consult official documentation for any pinout changes or alternative packaging options.

Selection Notes

Select this component when high-throughput serial communication with integrated DMA is required. It is suitable for systems needing support for multiple protocols such as HDLC and BISYNC. Consider the 68-pin PLCC package constraints during design. Verify compatibility with host processor bus interfaces, as it supports both multiplexed and non-multiplexed configurations. Evaluate power consumption against system thermal limits.

Part Context

This part belongs to the Z16C32 IUSC family, which integrates universal serial control with DMA capabilities. It is designed to replace discrete serial and DMA chip combinations, reducing board space. The Z16C32 series offers software configurability for various serial communication needs. It supports advanced features like ring buffers and linked frame status transfers to optimize processing efficiency.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. The product status is listed as discontinued. Users should consult manufacturer resources for potential obsolescence management strategies or legacy support options.