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== 3.3V GPIOs ==

The GPIO peripheral provides general-purpose pins that can be configured as either inputs or outputs, for connections to external devices. In addition, the GPIO peripheral can produce CPU interrupts in different interrupt generation modes. The device contains four 3.3 V GPIO modules and each GPIO module is made up of up to 32 identical channels. The device GPIO peripheral supports , for up to 118 1.8-V/3.3-V GPIO pins, (GP0[0:31], GP1[0:31], GP2[0:31], and GP3[0:21]). Each channel must be properly configured, since GPIO signals are multiplexed with other interfaces signals.