JAJSE27 October 2017 MSP432E401Y
All GPIO signals are 3.3-V tolerant, except for PB1 (USB0VBUS) which is 5-V tolerant. See the General-Purpose Input/Outputs (GPIOs) chapter of the MSP432E4 SimpleLink™ Microcontrollers Technical Reference Manual for more information on GPIO configuration.
Two types of pads are provided on the device:
Port pins PL6 and PL7 operate as fast GPIO pads, but have 4-mA drive capability only. GPIO register controls for drive strength, slew rate, and open drain have no effect on these pins. The following registers have no effect: GPIODR2R, GPIODR4R, GPIODR8R, GPIODR12R, GPIOSLR, and GPIOODR.
Port pins PM[7:4] operate as fast GPIO pads but support only 2-, 4-, 6-, and 8-mA drive capability. All standard GPIO register controls, except for the GPIODR12R register, apply to these port pins.
Table 5-23 lists the characteristics of the fast GPIOs.