Datasheet

19 Universal Asynchronous Receivers/Transmitters
(UARTs)
The TM4C129ENCPDT controller includes eight Universal Asynchronous Receiver/Transmitter
(UART) with the following features:
■ Programmable baud-rate generator allowing speeds up to 7.5 Mbps for regular speed (divide
by 16) and 15 Mbps for high speed (divide by 8)
■ Separate 16x8 transmit (TX) and receive (RX) FIFOs to reduce CPU interrupt service loading
■ Programmable FIFO length, including 1-byte deep operation providing conventional
double-buffered interface
■ FIFO trigger levels of 1/8, 1/4, 1/2, 3/4, and 7/8
■ Standard asynchronous communication bits for start, stop, and parity
■ Line-break generation and detection
■ Fully programmable serial interface characteristics
– 5, 6, 7, or 8 data bits
– Even, odd, stick, or no-parity bit generation/detection
– 1 or 2 stop bit generation
■ IrDA serial-IR (SIR) encoder/decoder providing
– Programmable use of IrDA Serial Infrared (SIR) or UART input/output
– Support of IrDA SIR encoder/decoder functions for data rates up to 115.2 Kbps half-duplex
– Support of normal 3/16 and low-power (1.41-2.23 μs) bit durations
– Programmable internal clock generator enabling division of reference clock by 1 to 256 for
low-power mode bit duration
■ Support for communication with ISO 7816 smart cards
■ Modem functionality available on the following UARTs:
– UART0 (modem flow control and modem status)
– UART1 (modem flow control and modem status)
– UART2 (modem flow control)
– UART3 (modem flow control)
– UART4 (modem flow control)
■ EIA-485 9-bit support
1285June 18, 2014
Texas Instruments-Production Data
Tiva
™
TM4C129ENCPDT Microcontroller