STM32 F4 GPIO Modes

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STM32 F4 GPIO Modes 

Goal: creating a visual summary of GPIO configuration modes. The summary at the bottom shows the major configuration choices.

Basic electrical info: GPIOs can sink or source up to ±8 mA, and sink or source up to ±20 mA (with a relaxed VOL/VOH)

except PC13, PC14 and PC15 which can sink or source up to ±3mA.

When using the PC13 to PC15 GPIOs in output mode, the speed should not exceed 2 MHz with a maximum load of 30 pF.

For more I/O static and AC characteristics refer to the product spec pdf page 109.

STM32 F4 GPIO Modes

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原文地址：http://www.cnblogs.com/shangdawei/p/4793301.html