TL16C550CIFNR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550CIFNR is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments. It features 16-byte transmit and receive FIFOs with three additional error status bits per byte in the receiver buffer. The device supports data rates up to 1 Mbaud using a 16-MHz clock input. It operates on both 3.3-V and 5-V supply voltages within specified ranges. The component includes programmable auto-RTS and auto-CTS autoflow control, independent interrupt generation, and DMA signaling via TXRDY and RXRDY pins. It is housed in a 48-pin LQFP package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Programmable autoflow control utilizing auto-RTS and auto-CTS modes to manage serial data flow and prevent overrun errors.
• Integrated 16-byte FIFO buffers for both transmission and reception to reduce CPU software overhead.
• Supports standard asynchronous communication formats including configurable character length, parity, and stop bits.
• Provides complete modem control capabilities and prioritized interrupt system for efficient link management.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed serial communication interfaces requiring reduced processor intervention.
• Systems utilizing direct memory access (DMA) for efficient data transfer between peripherals and memory.
• Industrial equipment operating under varying temperature conditions requiring robust UART functionality.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'FN' corresponds to the 48-pin LQFP package and tape-and-reel delivery format as defined in the manufacturer's orderable information. Confirm that the industrial temperature range (-40°C to 85°C) aligns with the 'I' designation in the model number. Ensure compatibility with existing TL16C450 register sets if migrating from legacy designs.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with hardware autoflow control is required. It serves as a functional upgrade to the TL16C550B and maintains register compatibility with the TL16C450. Choose this part over multi-channel alternatives if only one serial port is needed. Verify that the system clock can support the required baud rate division ratios up to 2^16 minus 1.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550CIFNR belongs to the TL16C550C family of asynchronous communications elements. This family represents an evolution from the TL16C550B and TL16C450, adding hardware autoflow control and enhanced FIFO capabilities while maintaining backward compatibility with older register maps. The 'I' suffix denotes the industrial temperature grade, and 'FN' specifies the plastic quad flatpack no-lead package variant.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a documented alternative offering similar UART functionality in a 48-LQFP package. Verify pinout compatibility and electrical characteristics before substitution. Other members of the TL16C550C family may serve as replacements depending on package and temperature requirements.