LM3S1621 Datasheet, PDF (429/947 Pages) Texas Instruments – ARM and Thumb are registered trademarks and Cortex is a trademark

Stellaris^® LM3S1621 Microcontroller
Bit/Field
31:8
7:0
Name
reserved
PDE
Type
RO
R/W
Reset Description
0x0000.00 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.
0x00 Pad Weak Pull-Down Enable
Value Description
1 The corresponding pin has a weak pull-down resistor.
0 The corresponding pin is not affected.
Setting a bit in the GPIOPUR register clears the corresponding bit in
the GPIOPDR register. The change is effective on the second clock
cycle after the write if accessing GPIO via the APB memory aperture.
If using AHB access, the change is effective on the next clock cycle.
January 21, 2012
429
Texas Instruments-Production Data