LM3S5737 Datasheet, PDF (761/833 Pages) Texas Instruments – Stellaris® LM3S5737 Microcontroller

Stellaris® LM3S5737 Microcontroller
Table 19-2. Signals by Signal Name (continued)
Pin Name
Pin Number Pin Type Buffer Type^a Description
TCK
80
I
TTL
JTAG/SWD CLK.
TDI
78
I
TTL
JTAG TDI.
TDO
77
O
TTL
JTAG TDO and SWO.
TMS
79
I/O
TTL
JTAG TMS and SWDIO.
U0Rx
26
I
TTL
UART module 0 receive. When in IrDA mode, this signal has
IrDA modulation.
U0Tx
27
O
TTL
UART module 0 transmit. When in IrDA mode, this signal has
IrDA modulation.
USB0DM
70
I/O
Analog Bidirectional differential data pin (D- per USB specification)
for USB0.
USB0DP
71
I/O
Analog Bidirectional differential data pin (D+ per USB specification)
for USB0.
USB0EPEN
24
O
TTL
Optionally used in Host mode to control an external power
source to supply power to the USB bus.
USB0PFLT
23
I
TTL
Optionally used in Host mode by an external power source
to indicate an error state by that power source.
USB0RBIAS
73
O
Analog 9.1-kΩ resistor (1% precision) used internally for USB analog
circuitry.
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.
VDD
8
-
Power Positive supply for I/O and some logic.
20
32
44
56
68
81
93
VDD25
14
-
Power Positive supply for most of the logic function, including the
38
processor core and most peripherals.
62
88
VDDA
3
-
Power The positive supply (3.3 V) for the analog circuits (ADC,
Analog Comparators, etc.). These are separated from VDD
to minimize the electrical noise contained on VDD from
affecting the analog functions. VDDA pins must be connected
to 3.3 V, regardless of system implementation.
WAKE
50
I
TTL
An external input that brings the processor out of Hibernate
mode when asserted.
XOSC0
52
I
Analog Hibernation module oscillator crystal input or an external clock
reference input. Note that this is either a crystal or a
32.768-kHz oscillator for the Hibernation module RTC.
XOSC1
53
O
Analog Hibernation module oscillator crystal output. Leave
unconnected when using a single-ended clock source.
a. The TTL designation indicates the pin has TTL-compatible voltage levels.
November 17, 2011
761
Texas Instruments-Production Data