GPIO memory map (continued)
Absolute
address
(hex)
Register name
Width
(in bits)
Access Reset value
Section/
page
400F_F100 Port Data Output Register (GPIOE_PDOR) 32 R/W 0000_0000h 41.2.1/775
400F_F104 Port Set Output Register (GPIOE_PSOR) 32
W
(always
reads 0)
0000_0000h 41.2.2/776
400F_F108 Port Clear Output Register (GPIOE_PCOR) 32
W
(always
reads 0)
0000_0000h 41.2.3/776
400F_F10C Port Toggle Output Register (GPIOE_PTOR) 32
W
(always
reads 0)
0000_0000h 41.2.4/777
400F_F110 Port Data Input Register (GPIOE_PDIR) 32 R 0000_0000h 41.2.5/777
400F_F114 Port Data Direction Register (GPIOE_PDDR) 32 R/W 0000_0000h 41.2.6/778
41.2.1 Port Data Output Register (GPIOx_PDOR)
This register configures the logic levels that are driven on each general-purpose output
pins.
NOTE
Do not modify pin configuration registers associated with pins
not available in your selected package. All un-bonded pins not
available in your package will default to DISABLE state for
lowest power consumption.
Address: Base address + 0h offset
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
PDO
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
GPIOx_PDOR field descriptions
Field Description
31–0
PDO
Port Data Output
Register bits for un-bonded pins return a undefined value when read.
0 Logic level 0 is driven on pin, provided pin is configured for general-purpose output.
1 Logic level 1 is driven on pin, provided pin is configured for general-purpose output.
Chapter 41 General-Purpose Input/Output (GPIO)
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 775