SC16C650AIA44,529

Overview

The SC16C650AIA44,529 is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP Semiconductors. It operates at supply voltages of 2.5 V, 3.3 V, and 5 V within an industrial temperature range of -40 °C to +85 °C. The device features 32-byte transmit and receive FIFOs with error flags, supporting data rates up to 3 Mbits/s at 5 V. It includes an infrared encoder/decoder, automatic hardware/software flow control, and DMA signaling via RXRDY and TXRDY pins. The component is housed in a PLCC44 package.

Feature Summary

• Provides 32-byte transmit and receive FIFOs to reduce external CPU bandwidth requirements.
• Supports automatic hardware flow control using RTS and CTS signals or software flow control with programmable Xon/Xoff characters.
• Integrates an infrared encoder/decoder for IrDA communication compliance.
• Offers internal loop-back capabilities for on-board diagnostics and fault isolation.

Applications

• Serial data communications requiring high-speed processing
• Systems utilizing shared network environments
• Applications interfacing with high-speed modems

Procurement Notes

Verify the specific ordering suffix against current manufacturer documentation to confirm package type and environmental compliance. Confirm availability status as older revisions may be discontinued. Ensure the design supports the required voltage levels and interface protocols before finalizing procurement.

Selection Notes

Select this UART when pin compatibility with standard 16C450/550 devices is required alongside enhanced FIFO depth. Consider the PLCC44 package constraints for PCB layout. Verify that the system clock frequency aligns with the baud rate generator requirements for the desired data throughput.

Part Context

This component belongs to the SC16C650A family of UARTs, which are upward solutions to the 16C450 and 16C550 standards. It maintains register compatibility while adding significant performance improvements through larger buffer sizes and advanced flow control mechanisms suitable for modern embedded serial interfaces.

Replacement Considerations

The SC16C650BIB48 serves as a functional substitute offering similar UART capabilities with a LQFP48 package. Designers must account for the package footprint differences and verify pinout compatibility during migration.