LM3S101 Luminary Micro, Inc., LM3S101 Datasheet - Page 97

• Manufacturer Part Number: LM3S101
• Description: Microcontroller
• Manufacturer: Luminary Micro, Inc.

8
October 5, 2006
General-Purpose Input/Outputs (GPIOs)
The GPIO module is composed of three physical GPIO blocks, each corresponding to an
individual GPIO port (Port A, Port B, and Port C). The GPIO module is FiRM-compliant and
supports 2 to 18 programmable input/output pins, depending on the peripherals being used.
The GPIO module has the following features:
Programmable control for GPIO interrupts:
–
–
–
5-V-tolerant input/outputs
Bit masking in both read and write operations through address lines
Programmable control for GPIO pad configuration:
–
–
–
–
–
Interrupt generation masking
Edge-triggered on rising, falling, or both
Level-sensitive on High or Low values
Weak pull-up or pull-down resistors
2-mA, 4-mA, and 8-mA pad drive
Slew rate control for the 8-mA drive
Open drain enables
Digital input enables
Preliminary
LM3S101 Data Sheet
97