LM3S5D91 Datasheet, PDF (1217/1340 Pages) Texas Instruments – Stellaris® LM3S5D91 Microcontroller

Stellaris^® LM3S5D91 Microcontroller
Table 23-7. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
D2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
VDDC
D3
-
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 25-6 on page 1259.
PH3
I/O
TTL
GPIO port H bit 3.
EPI0S0
I/O
TTL
EPI module 0 signal 0.
D10
Fault0
PhB0
I
TTL
PWM Fault 0.
I
TTL
QEI module 0 phase B.
USB0EPEN
O
TTL
Optionally used in Host mode to control an external power source
to supply power to the USB bus.
PH2
I/O
TTL
GPIO port H bit 2.
C1o
O
TTL
Analog comparator 1 output.
D11
EPI0S1
I/O
TTL
EPI module 0 signal 1.
Fault3
I
TTL
PWM Fault 3.
IDX1
I
TTL
QEI module 1 index.
PB1
I/O
TTL
GPIO port B bit 1. This pin is not 5-V tolerant.
CCP1
I/O
TTL
Capture/Compare/PWM 1.
CCP2
I/O
TTL
Capture/Compare/PWM 2.
PWM3
D12
U1Tx
O
TTL
PWM 3. This signal is controlled by PWM Generator 1.
O
TTL
UART module 1 transmit. When in IrDA mode, this signal has IrDA
modulation.
USB0VBUS
I/O
Analog This signal is used during the session request protocol. This signal
allows the USB PHY to both sense the voltage level of VBUS, and
pull up VBUS momentarily during VBUS pulsing.
E1
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
E2
NC
-
-
No connect. Leave the pin electrically unconnected/isolated.
LDO
E3
-
Power Low drop-out regulator output voltage. This pin requires an external
capacitor between the pin and GND of 1 µF or greater. 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.
PB3
I/O
TTL
GPIO port B bit 3.
Fault0
I
TTL
PWM Fault 0.
E11
Fault3
I
TTL
PWM Fault 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.
January 22, 2012
Texas Instruments-Production Data
1217