TL16C550CFNRG4

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550CFNRG4 is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments. It features 16-byte transmit and receive FIFOs to reduce CPU overhead. The device supports data rates up to 1 Mbaud with a maximum clock rate of 16 MHz. It operates on supply voltages ranging from 3 V to 5.25 V. The component is housed in a 48-pin LQFP package and is designed for surface-mount installation. It includes programmable baud rate generation, autoflow control, and complete modem control capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Programmable autoflow control using auto-RTS and auto-CTS modes to manage serial data flow and prevent overrun errors.
• Integrated 16-byte transmit and receive FIFOs that buffer data and provide error status bits for received characters.
• Complete hardware modem control interface supporting CTS, RTS, DSR, DTR, RI, and DCD signals.
• Fully prioritized interrupt system with independent control over transmitter, receiver, line status, and data set interrupts.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial data conversion between CPUs and peripheral devices.
• Implementation of high-speed serial communication links requiring DMA signaling via TXRDY and RXRDY pins.
• Direct connection to RJ11 cables for equipment operating on the same power drop.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and temperature range. Confirm RoHS compliance status as manufacturing processes may evolve. Check for active production status or obsolescence notices before finalizing procurement plans.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with integrated FIFO buffering is required. Ensure the design supports the 48-pin LQFP footprint and operates within the specified voltage and temperature limits. Verify compatibility with existing TL16C450 software if legacy code migration is planned.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C550C family of asynchronous communications elements. It serves as a functional upgrade to the TL16C550B and TL16C450, offering enhanced FIFO capabilities and autoflow control while maintaining register compatibility with earlier generations.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550CI is the industrial temperature grade equivalent. The TL16C550B is a predecessor with similar functionality but lacks some advanced features. Verify pinout and register compatibility before substituting.