TM4C1290NCZAD Datasheet, PDF (442/1648 Pages) Texas Instruments – Tiva Microcontroller

System Control
Bit/Field
31:18
17
16
15
14
Name
reserved
P17
P16
P15
P14
Type
RO
RW
RW
RW
RW
Reset
0
1
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.
GPIO Port T Power Control
The Pn bit encodings are not applicable if the corresponding bit in the
RCGCGPIO, SCGCGPIO or DCGCGPIO register is clear.
Value Description
0 GPIO Port T is not powered and does not receive a clock. In
this case, the module's state is not retained.
This configuration provides the lowest power consumption state.
1 GPIO Port T is powered, but does not receive a clock. In this
case, the module is inactive.
1
GPIO Port S Power Control
The Pn bit encodings are not applicable if the corresponding bit in the
RCGCGPIO, SCGCGPIO or DCGCGPIO register is clear.
Value Description
0 GPIO Port S is not powered and does not receive a clock. In
this case, the module's state is not retained.
This configuration provides the lowest power consumption state.
1 GPIO Port S is powered, but does not receive a clock. In this
case, the module is inactive.
1
GPIO Port R Power Control
The Pn bit encodings are not applicable if the corresponding bit in the
RCGCGPIO, SCGCGPIO or DCGCGPIO register is clear.
Value Description
0 GPIO Port R is not powered and does not receive a clock. In
this case, the module's state is not retained.
This configuration provides the lowest power consumption state.
1 GPIO Port R is powered, but does not receive a clock. In this
case, the module is inactive.
1
GPIO Port Q Power Control
The Pn bit encodings are not applicable if the corresponding bit in the
RCGCGPIO, SCGCGPIO or DCGCGPIO register is clear.
Value Description
0 GPIO Port Q is not powered and does not receive a clock. In
this case, the module's state is not retained.
This configuration provides the lowest power consumption state.
1 GPIO Port Q is powered, but does not receive a clock. In this
case, the module is inactive.
442
June 18, 2014
Texas Instruments-Production Data