LM3S9781_15 Datasheet, PDF(1124/1271 Page) Texas Instruments – Stellaris LM3S9781 Microcontroller

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LM3S9781_15 Datasheet, PDF (1124/1271 Pages) Texas Instruments – Stellaris LM3S9781 Microcontroller

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Signal Tables

Table 22-2. Signals by Pin Number (continued)

Pin Number

Pin Name

Pin Type Buffer Typea Description

PJ1

I/O

TTL

GPIO port J bit 1.

EPI0S17

I/O

TTL

EPI module 0 signal 17.

87

I2C1SDA

I/O

OD

I2C module 1 data.

USB0PFLT

I

TTL

Optionally used in Host mode by an external power source to

indicate an error state by that power source.

VDDC

88

-

Power Positive supply for most of the logic function, including the

processor core and most peripherals. The voltage on this pin is

1.3 V and is supplied by the on-chip LDO. The VDDC pins should

only be connected to the LDO pin and an external capacitor as

specified in Table 24-6 on page 1188 .

PB7

I/O

TTL

GPIO port B bit 7.

89

NMI

I

TTL

Non-maskable interrupt.

PB6

I/O

TTL

GPIO port B bit 6.

C0+

I

Analog Analog comparator 0 positive input.

C0o

O

TTL

Analog comparator 0 output.

CCP1

I/O

TTL

Capture/Compare/PWM 1.

CCP5

I/O

TTL

Capture/Compare/PWM 5.

90

CCP7

I/O

TTL

Capture/Compare/PWM 7.

I2S0TXSCK

I/O

TTL

I2S module 0 transmit clock.

VREFA

I

Analog This input provides a reference voltage used to specify the input

voltage at which the ADC converts to a maximum value. In other

words, the voltage that is applied to VREFA is the voltage with which

an AINn signal is converted to 1023. The VREFA input is limited

to the range specified in Table 24-23 on page 1199 .

PB5

I/O

TTL

GPIO port B bit 5.

AIN11

I

Analog Analog-to-digital converter input 11.

C0o

O

TTL

Analog comparator 0 output.

C1-

I

Analog Analog comparator 1 negative input.

CAN0Tx

O

TTL

CAN module 0 transmit.

91

CCP0

I/O

TTL

Capture/Compare/PWM 0.

CCP2

I/O

TTL

Capture/Compare/PWM 2.

CCP5

I/O

TTL

Capture/Compare/PWM 5.

CCP6

I/O

TTL

Capture/Compare/PWM 6.

EPI0S22

I/O

TTL

EPI module 0 signal 22.

U1Tx

O

TTL

UART module 1 transmit. When in IrDA mode, this signal has IrDA

modulation.

PB4

I/O

TTL

GPIO port B bit 4.

AIN10

I

Analog Analog-to-digital converter input 10.

C0-

I

Analog Analog comparator 0 negative input.

CAN0Rx

I

TTL

CAN module 0 receive.

92

EPI0S23

I/O

TTL

EPI module 0 signal 23.

U1Rx

I

TTL

UART module 1 receive. When in IrDA mode, this signal has IrDA

modulation.

U2Rx

I

TTL

UART module 2 receive. When in IrDA mode, this signal has IrDA

modulation.

1124

Texas Instruments-Production Data

July 03, 2014

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