SCC2692AE1B44,551

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The NXP USA Inc. SCC2692AE1B44,551 is a Dual Universal Asynchronous Receiver/Transmitter (DUART) compatible with the SCN2681. It provides two full-duplex asynchronous receiver/transmitter channels in a single package. The device interfaces directly with microprocessors and supports polled or interrupt-driven systems. Each channel features independent programmable operating modes and data formats, including 5 to 8 data bits plus parity and 1, 1.5, or 2 stop bits. It includes quadruple buffered receiver data registers, a 16-bit programmable counter/timer, and versatile interrupt capabilities. The component operates on a single +5V power supply and is available in commercial and industrial temperature ranges.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual full-duplex asynchronous receiver/transmitters
• Quadruple buffered receiver data register
• Programmable baud rate generator
• Multi-function I/O ports

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems
• Polled or interrupt-driven microprocessor systems
• Multidrop communication networks

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm the exact package type and temperature range. Ensure compatibility with existing system voltage levels and interface requirements before procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component for applications requiring dual independent serial channels with high buffering capacity. Consider the PQFP44 package availability and ensure the system design accommodates the required crystal frequency and external clock inputs for optimal performance.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The SCC2692 series is part of NXP's legacy DUART portfolio, designed for robust serial communication in embedded systems. It serves as a direct replacement for older SCN2681 devices while offering enhanced features like quadruple buffering and flexible clocking options.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

SCC2692AC1B44

UARTs (Universal Asynchronous Receiver Transmitter) FAQ

What is the maximum data transfer rate supported by the SCC2692?

The maximum data transfer rates are 1MB/sec at 1X clock speed and 125kB/sec at 16X clock speed.

Can the receiver and transmitter operate at different speeds?

Yes, each receiver and transmitter can independently select its operating speed from fixed baud rates, a programmable counter/timer, or an external clock.

What types of error detection does the device support?

The device supports parity, framing, and overrun error detection, as well as false start bit detection and line break detection/generation.