LM3S317 Luminary Micro, Inc, LM3S317 Datasheet - Page 106

• Manufacturer Part Number: LM3S317
• Description: Lm3s317 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

General-Purpose Input/Outputs (GPIOs)
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General-Purpose Input/Outputs (GPIOs)
The GPIO module is composed of five physical GPIO blocks, each corresponding to an individual
GPIO port (Port A, Port B, Port C, Port D, and Port E). The GPIO module is FiRM-compliant and
supports 3 to 30 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
February 6, 2007