SCC2692AE1A44,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SCC2692AE1A44,518 is a dual asynchronous receiver/transmitter (DUART) manufactured by NXP Semiconductors. It provides two full-duplex asynchronous channels within a single package, compatible with the SCN2681. The device features quadruple buffered receiver data registers and programmable data formats supporting 5 to 8 data bits plus parity, with 1, 1.5, or 2 stop bits. Each channel supports baud rates from 50 to 115.2k bps via fixed rates or external clocks, with maximum transfer rates up to 1MB/sec at 1X clocking. It includes a 16-bit counter/timer, multi-function I/O ports, and operates on a single +5V supply across commercial and industrial temperature ranges.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual full-duplex asynchronous receiver/transmitters with independent programming capabilities
• Quadruple buffered receiver data register to minimize overrun potential
• Programmable baud rate generator supporting fixed rates and external clock inputs
• Multi-function input and output ports for general purpose I/O and control signals

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel applications
• Polled or interrupt-driven microprocessor interface systems
• Multidrop communication networks utilizing automatic wake-up modes

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against current NXP documentation to confirm package type and temperature range. Confirm availability status as older specifications may indicate discontinued manufacturing phases. Ensure compatibility with existing system voltage requirements of +5V before procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual independent UART channels are required in a single footprint. Consider the PQFP44 package for surface mount applications. Verify that the system requires TTL-compatible logic levels and a single +5V power supply configuration for proper integration.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SCC2692 family of Dual Universal Asynchronous Receiver/Transmitters. It serves as a CMOS-LSI communications device designed to interface directly with microprocessors. The series offers flexibility through programmable data formats and multiple clocking options for diverse serial communication needs.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SCC2692 is explicitly documented as compatible with the SCN2681. Designers should verify pinout and register compatibility if substituting between these specific models.