LM3S1332 Luminary Micro, Inc, LM3S1332 Datasheet - Page 180
LM3S1332
Manufacturer Part Number
LM3S1332
Description
Lm3s1332 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S1332.pdf
(447 pages)
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Reset
Reset
Type
Type
General-Purpose Input/Outputs (GPIOs)
GPIO 8-mA Drive Select (GPIODR8R)
GPIO Port A base: 0x4000.4000
GPIO Port B base: 0x4000.5000
GPIO Port C base: 0x4000.6000
GPIO Port D base: 0x4000.7000
GPIO Port E base: 0x4002.4000
GPIO Port F base: 0x4002.5000
GPIO Port G base: 0x4002.6000
GPIO Port H base: 0x4002.7000
Offset 0x508
Type R/W, reset 0x0000.0000
180
Bit/Field
31:8
7:0
RO
RO
31
15
0
0
Register 13: GPIO 8-mA Drive Select (GPIODR8R), offset 0x508
The GPIODR8R register is the 8-mA drive control register. It allows for each GPIO signal in the port
to be individually configured without affecting the other pads. When writing the DRV8 bit for a GPIO
signal, the corresponding DRV2 bit in the GPIODR2R register and the DRV4 bit in the GPIODR4R
register are automatically cleared by hardware.
RO
RO
30
14
0
0
reserved
RO
RO
29
13
0
0
Name
DRV8
RO
RO
28
12
0
0
reserved
RO
RO
27
11
0
0
Type
R/W
RO
RO
RO
26
10
0
0
Reset
0x00
0x00
RO
RO
25
0
9
0
Preliminary
RO
RO
24
0
8
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
Output Pad 8-mA Drive Enable
A write of 1 to either GPIODR2[n] or GPIODR4[n] clears the
corresponding 8-mA enable bit. The change is effective on the second
clock cycle after the write.
reserved
R/W
RO
23
0
7
0
R/W
RO
22
0
6
0
R/W
RO
21
0
5
0
R/W
RO
20
0
4
0
DRV8
R/W
RO
19
0
3
0
R/W
RO
18
0
2
0
July 26, 2008
R/W
RO
17
0
1
0
R/W
RO
16
0
0
0
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