LM3S8970 Luminary Micro, Inc, LM3S8970 Datasheet - Page 262

• Manufacturer Part Number: LM3S8970
• Description: Lm3s8970 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Universal Asynchronous Receivers/Transmitters (UARTs)
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Universal Asynchronous Receivers/Transmitters
(UARTs)
The Stellaris
16C550-type serial interface characteristics. The LM3S8970 controller is equipped with two UART
modules.
Each UART has the following features:
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Separate transmit and receive FIFOs
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
Programmable baud-rate generator allowing rates up to 3.125 Mbps
Standard asynchronous communication bits for start, stop, and parity
False start bit detection
Line-break generation and detection
Fully programmable serial interface characteristics:
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IrDA serial-IR (SIR) encoder/decoder providing:
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5, 6, 7, or 8 data bits
Even, odd, stick, or no-parity bit generation/detection
1 or 2 stop bit generation
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
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Universal Asynchronous Receiver/Transmitter (UART) provides fully programmable,
Preliminary
July 25, 2008