LM3S1G21 Datasheet, PDF(841/955 Page) Texas Instruments – Stellaris® LM3S1G21 Microcontroller

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LM3S1G21 Datasheet, PDF (841/955 Pages) Texas Instruments – Stellaris® LM3S1G21 Microcontroller

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StellarisÂ® LM3S1G21 Microcontroller

Table 19-2. Signals by Pin Number (continued)

Pin Number

Pin Name

Pin Type Buffer Typea Description

PA4

I/O

TTL

GPIO port A bit 4.

30

SSI0Rx

I

TTL

SSI module 0 receive.

PA5

I/O

TTL

GPIO port A bit 5.

31

SSI0Tx

O

TTL

SSI module 0 transmit.

32

VDD

-

Power Positive supply for I/O and some logic.

33

GND

-

Power Ground reference for logic and I/O pins.

PA6

I/O

TTL

GPIO port A bit 6.

CCP1

I/O

TTL

Capture/Compare/PWM 1.

34

I2C1SCL

I/O

OD

I2C module 1 clock.

U1CTS

I

TTL

UART module 1 Clear To Send modem flow control input signal.

PA7

I/O

TTL

GPIO port A bit 7.

CCP3

I/O

TTL

Capture/Compare/PWM 3.

35

CCP4

I/O

TTL

Capture/Compare/PWM 4.

I2C1SDA

I/O

OD

I2C module 1 data.

U1DCD

I

TTL

UART module 1 Data Carrier Detect modem status input signal.

PG7

I/O

TTL

GPIO port G bit 7.

36

CCP5

I/O

TTL

Capture/Compare/PWM 5.

EPI0S31

I/O

TTL

EPI module 0 signal 31.

PG6

I/O

TTL

GPIO port G bit 6.

37

U1RI

I

TTL

UART module 1 Ring Indicator modem status input signal.

VDDC

38

-

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 21-6 on page 899.

PJ2

I/O

TTL

GPIO port J bit 2.

39

CCP0

I/O

TTL

Capture/Compare/PWM 0.

EPI0S18

I/O

TTL

EPI module 0 signal 18.

PG5

I/O

TTL

GPIO port G bit 5.

40

CCP5

I/O

TTL

Capture/Compare/PWM 5.

U1DTR

O

TTL

UART module 1 Data Terminal Ready modem status input signal.

PG4

I/O

TTL

GPIO port G bit 4.

CCP3

I/O

TTL

Capture/Compare/PWM 3.

41

EPI0S15

I/O

TTL

EPI module 0 signal 15.

U1RI

I

TTL

UART module 1 Ring Indicator modem status input signal.

PF7

I/O

TTL

GPIO port F bit 7.

42

CCP4

I/O

TTL

Capture/Compare/PWM 4.

EPI0S12

I/O

TTL

EPI module 0 signal 12.

PF6

I/O

TTL

GPIO port F bit 6.

43

CCP1

I/O

TTL

Capture/Compare/PWM 1.

U1RTS

O

TTL

UART module 1 Request to Send modem flow control output line.

44

VDD

-

Power Positive supply for I/O and some logic.

January 22, 2012

841

Texas Instruments-Production Data

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