LM3S9B81 Datasheet, PDF (1053/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Stellaris® LM3S9B81 Microcontroller
Table 23-7. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
E2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
E3
LDO
-
Power Low drop-out regulator output voltage. This pin requires an external
capacitor between the pin and GND of 1 µF or greater. When the
on-chip LDO is used to provide power to the logic, the LDO pin
must also be connected to the VDDC pins at the board level in
addition to the decoupling capacitor(s).
E10
VDD
-
Power Positive supply for I/O and some logic.
E11
PB3
I/O
TTL
GPIO port B bit 3.
I2C0SDA
I/O
OD
I²C module 0 data.
USB0PFLT
I
TTL
Optionally used in Host mode by an external power source to
indicate an error state by that power source.
E12
PB0
I/O
TTL
GPIO port B bit 0.
CCP0
I/O
TTL
Capture/Compare/PWM 0.
U1Rx
I
TTL
UART module 1 receive. When in IrDA mode, this signal has IrDA
modulation.
USB0ID
I
Analog This signal senses the state of the USB ID signal. The USB PHY
enables an integrated pull-up, and an external element (USB
connector) indicates the initial state of the USB controller (pulled
down is the A side of the cable and pulled up is the B side).
F1
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
F2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
F3
EPI0S16
I/O
TTL
EPI module 0 signal 16.
I2C1SCL
I/O
OD
I²C module 1 clock.
PJ0
I/O
TTL
GPIO port J bit 0.
F10
PH5
I/O
TTL
GPIO port H bit 5.
EPI0S11
I/O
TTL
EPI module 0 signal 11.
SSI1Fss
I/O
TTL
SSI module 1 frame.
F11
GND
-
Power Ground reference for logic and I/O pins.
F12
GND
-
Power Ground reference for logic and I/O pins.
G1
PD0
I/O
TTL
GPIO port D bit 0.
AIN15
I
Analog Analog-to-digital converter input 15.
CAN0Rx
I
TTL
CAN module 0 receive.
CCP6
I2S0RXSCK
I/O
TTL
Capture/Compare/PWM 6.
I/O
TTL
I²S module 0 receive clock.
U1CTS
I
TTL
UART module 1 Clear To Send modem status input signal.
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.
June 29, 2010
Texas Instruments-Advance Information
1053