LM3S1937-IBZ50 Luminary Micro, Inc, LM3S1937-IBZ50 Datasheet - Page 459
LM3S1937-IBZ50
Manufacturer Part Number
LM3S1937-IBZ50
Description
Lm3s1937 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1937-IBZ50.pdf
(524 pages)
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19
19.1
July 25, 2008
Signal Tables
The following tables list the signals available for each pin. Functionality is enabled by software with
the GPIOAFSEL register.
Important:
Table 19-1 on page 459 shows the pin-to-signal-name mapping, including functional characteristics
of the signals. Table 19-2 on page 463 lists the signals in alphabetical order by signal name.
Table 19-3 on page 467 groups the signals by functionality, except for GPIOs. Table 19-4 on page
469 lists the GPIO pins and their alternate functionality.
100-Pin LQFP Package Pin Tables
Table 19-1. Signals by Pin Number
Pin Number
10
11
12
13
1
2
3
4
5
6
7
8
9
All multiplexed pins are GPIOs by default, with the exception of the five JTAG pins (PB7
and PC[3:0]) which default to the JTAG functionality.
Pin Name
ADC0
ADC1
VDDA
GNDA
ADC2
ADC3
PWM0
PWM1
U1Rx
U1Tx
LDO
VDD
GND
PD0
PD1
PD2
PD3
Preliminary
Pin Type
I/O
I/O
I/O
I/O
O
O
O
-
-
-
-
-
I
I
I
I
I
Buffer Type
Analog
Analog
Analog
Analog
Power
Power
Power
Power
Power
TTL
TTL
TTL
TTL
TTL
TTL
TTL
TTL
Description
Analog-to-digital converter input 0.
Analog-to-digital converter input 1.
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.
The ground reference for the analog circuits
(ADC, Analog Comparators, etc.). These are
separated from GND to minimize the electrical
noise contained on VDD from affecting the
analog functions.
Analog-to-digital converter input 2.
Analog-to-digital converter input 3.
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 VDD25 pins
at the board level in addition to the decoupling
capacitor(s).
Positive supply for I/O and some logic.
Ground reference for logic and I/O pins.
GPIO port D bit 0
PWM 0
GPIO port D bit 1
PWM 1
GPIO port D bit 2
UART module 1 receive. When in IrDA mode,
this signal has IrDA modulation.
GPIO port D bit 3
UART module 1 transmit. When in IrDA mode,
this signal has IrDA modulation.
LM3S1937 Microcontroller
459
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