Description

The XR16C850CMTR is a universal asynchronous receiver and transmitter (UART). It is pin compatible with the ST16C550, ST16C650A, and TI's TL16C750 UART and is an enhanced UART with 128 byte FIFOs, automatic hardware/software flow control and data rates up to 1.5Mbps. The XR16C850CMTR includes transmit/receive FIFO counters to increase data loading and unloading throughput. It also includes onboard status registers that provide error indications and operational status. The XR16C850CMTR features RS-485 half duplex direction control and can be optionally configured to operate with the Infrared (IrDA) encoder/decoder. It has internal loopback that allows onboard diagnostics and comes in a small 7x7mm TQFP package.

Specifications and Features

• Pin-to-pin compatible to ST16C550, ST16C650A, and TL16C750
• 128 bytes of transmit/receive FIFO
• RS-485 half duplex direction control
• Automatic software/hardware flow control
• Programmable, selectable transmit/receive trigger levels
• Infrared transmitter and receiver encoder/decoder
• Up to 1.5Mbps data rate
• Sleep mode (100µA standby)
• Small 7x7mm TQFP
• +5 or 3.3 volts operation
• Windows 2 drivers available

Application Scenarios

The XR16C850CMTR can be used as a universal asynchronous receiver and transmitter (UART) in various embedded systems applications that require data transfer between devices. It is suitable for applications such as data communication, industrial automation, and networking.

Comparison

• Pin compatible with several other UART models
• 128 byte FIFOs for increased data transfer speeds
• Various features like automatic hardware/software flow control and RS-485 half duplex direction control
• Internal loopback for onboard diagnostics
• Can be optionally configured to operate with the Infrared (IrDA) encoder/decoder

• May not be suitable for applications that require higher data transfer rates beyond 1.5Mbps