LM3S817 Datasheet, PDF (229/553 Pages) List of Unclassifed Manufacturers – Microcontroller

Stellaris^® LM3S817 Microcontroller
7 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, Port E). The GPIO module supports 1-30 programmable
input/output pins, depending on the peripherals being used.
The GPIO module has the following features:
■ 1-30 GPIOs, depending on configuration
■ 5-V-tolerant in input configuration
■ Fast toggle capable of a change every two clock cycles
■ Programmable control for GPIO interrupts
– Interrupt generation masking
– Edge-triggered on rising, falling, or both
– Level-sensitive on High or Low values
■ Bit masking in both read and write operations through address lines
■ Can initiate an ADC sample sequence
■ Pins configured as digital inputs are Schmitt-triggered.
■ Programmable control for GPIO pad configuration
– Weak pull-up or pull-down resistors
– 2-mA, 4-mA, and 8-mA pad drive for digital communication
– Slew rate control for the 8-mA drive
– Open drain enables
– Digital input enables
July 14, 2014
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Texas Instruments-Production Data