I/O

The GPIOs can be connected to various digital and mixed-signal interfaces, and the features are as follows:

• Up to 34 General Purpose I/Os (GPIOs): normal digital GPIOs in MCU domain
• 8 AON_GPIOs: digital GPIOs in the AON domain
• 8 MSIOs: digital and analog mixed-signal GPIOs, no interrupt
• All I/Os have internal pull up/down registers
• All I/Os can retain their last state when the system enters the sleep mode.
• GPIO_0–GPIO_15, GPIO_18–GPIO_23 and GPIO_32–GPIO_33 are supplied by VDDIO_1.
• MSIO_0–MSIO_7 are supplied by VBATL.
• AON_GPIO_0–AON_GPIO_7, GPIO_16–GPIO_27 and GPIO_24–GPIO_31 are supplied by VDDIO_0.