LM3S1621 Datasheet, PDF (834/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Signal Tables
Table 19-2. Signals by Pin Number (continued)
Pin Number
Pin Name
Pin Type Buffer Type^a Description
45
GND
-
Power Ground reference for logic and I/O pins.
PF5
I/O
TTL
GPIO port F bit 5.
C1o
O
TTL
Analog comparator 1 output.
46
CCP2
I/O
TTL
Capture/Compare/PWM 2.
EPI0S15
I/O
TTL
EPI module 0 signal 15.
SSI1Tx
O
TTL
SSI module 1 transmit.
PF0
I/O
TTL
GPIO port F bit 0.
47
U1DSR
I
TTL
UART module 1 Data Set Ready modem output control line.
48
OSC0
I
Analog Main oscillator crystal input or an external clock reference input.
49
OSC1
O
Analog Main oscillator crystal output. Leave unconnected when using a
single-ended clock source.
50
WAKE
I
TTL
An external input that brings the processor out of Hibernate mode
when asserted.
51
HIB
O
OD
An output that indicates the processor is in Hibernate mode.
XOSC0
52
I
Analog Hibernation module oscillator crystal input or an external clock
reference input. Note that this is either a 4.194304-MHz crystal or
a 32.768-kHz oscillator for the Hibernation module RTC. See the
CLKSEL bit in the HIBCTL register.
53
XOSC1
O
Analog Hibernation module oscillator crystal output. Leave unconnected
when using a single-ended clock source.
54
GND
-
Power Ground reference for logic and I/O pins.
VBAT
55
-
Power Power source for the Hibernation module. It is normally connected
to the positive terminal of a battery and serves as the battery
backup/Hibernation module power-source supply.
56
VDD
-
Power Positive supply for I/O and some logic.
57
GND
-
Power Ground reference for logic and I/O pins.
PF4
I/O
TTL
GPIO port F bit 4.
C0o
O
TTL
Analog comparator 0 output.
58
CCP0
I/O
TTL
Capture/Compare/PWM 0.
EPI0S12
I/O
TTL
EPI module 0 signal 12.
SSI1Rx
I
TTL
SSI module 1 receive.
PF3
I/O
TTL
GPIO port F bit 3.
59
SSI1Fss
I/O
TTL
SSI module 1 frame.
PF2
I/O
TTL
GPIO port F bit 2.
60
SSI1Clk
I/O
TTL
SSI module 1 clock.
PF1
I/O
TTL
GPIO port F bit 1.
61
CCP3
I/O
TTL
Capture/Compare/PWM 3.
U1RTS
O
TTL
UART module 1 Request to Send modem flow control output line.
PH6
I/O
TTL
GPIO port H bit 6.
62
EPI0S26
I/O
TTL
EPI module 0 signal 26.
SSI1Rx
I
TTL
SSI module 1 receive.
PH5
I/O
TTL
GPIO port H bit 5.
63
EPI0S11
I/O
TTL
EPI module 0 signal 11.
SSI1Fss
I/O
TTL
SSI module 1 frame.
834
January 21, 2012
Texas Instruments-Production Data