SC28L92A1A,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC28L92A1A,518 is a Dual Universal Asynchronous Receiver/Transmitter (DUART) from the NXP IMPACT family. It provides two independent full-duplex asynchronous channels operating on a single 3.3 V or 5 V supply. The device features 16-byte FIFOs for both receiver and transmitter to minimize overrun and underrun risks. It supports pin-programmable Intel (80xxx) or Motorola (68xxx) bus interfaces. Each channel includes a programmable baud rate generator supporting rates up to 1 Mbit/s, parity error detection, and watchdog timers. The component operates within an industrial temperature range of -40 °C to +85 °C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent asynchronous receiver/transmitter channels with integrated 16-byte FIFOs
• Pin-selectable interface compatibility for Intel 80xxx and Motorola 68xxx microprocessor buses
• Integrated crystal oscillator and programmable baud rate generation up to 1 Mbit/s
• Programmable data formats including variable data bits, parity options, and stop bit configurations

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Clustered terminal systems requiring dual-speed channel operation
• Microprocessor-based serial communication interfaces
• Modem and DMA interface applications
• Multi-drop mode communication networks

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and revision level. Ensure that the required voltage supply and temperature range align with the target application environment before finalizing procurement orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a dual-channel UART solution compatible with legacy Intel or Motorola bus architectures is required. Consider the 16-byte FIFO depth for interrupt-driven systems to reduce CPU overhead. Verify that the available clock frequency supports the desired baud rate generation requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This device belongs to the SC28L92 series, which serves as a functional replacement for the SCC2692 and SC26C92. It retains power-up configuration compatibility with the SC26C92 while offering enhanced features such as deeper FIFOs and extended baud rate capabilities across the IMPACT family product line.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC28L92A1A is designed as a direct pin and function replacement for the SCC2692 and SC26C92. Designers migrating from these predecessors should verify that the increased FIFO depth does not conflict with existing software timing assumptions.