[1]
Pin state at reset for default function: I = Input; AI = Analog Input; O = Output; PU = internal pull-up enabled (pins pulled up to full VDD
level ); IA = inactive, no pull-up/down enabled.
[2]
5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis; includes
high-current output driver.
[3]
True open-drain pin. I2C-bus pins compliant with the I2C-bus specification for I2C standard mode, I2C Fast-mode, and I2C Fast-mode
Plus. Do not use this pad for high-speed applications such as SPI or USART.
Remark: If this pin is not available on the package, prevent it from internally floating as follows: Set bits 10 and 11 in the GPIO DIR0
register to 1 to enable the output driver and write 1 to bits 10 and 11 in the GPIO CLR0 register to drive the outputs LOW internally.
[4]
See Figure 10 for the reset pad configuration. RESET functionality is not available in Deep power-down mode. Use the WAKEUP pin to
reset the chip and wake up from Deep power-down mode. An external pull-up resistor is required on this pin for the Deep power-down
mode.
[5]
5 V tolerant pin providing standard digital I/O functions with configurable modes, configurable hysteresis, and analog input. When
configured as an analog input, the digital section of the pin is disabled, and the pin is not 5 V tolerant.
[6]
5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis. In Deep
power-down mode, pulling this pin LOW wakes up the chip.
[7]
5 V tolerant pad providing digital I/O functions with configurable pull-up/pull-down resistors and configurable hysteresis.
[8]
5 V tolerant pin providing standard digital I/O functions with configurable modes, configurable hysteresis, and analog I/O for the system
oscillator. When configured as an analog I/O, the digital section of the pin is disabled, and the pin is not 5 V tolerant.
[9]
The digital part of this pin is 3 V tolerant pin due to special analog functionality. Pin provides standard digital I/O functions with
configurable modes, configurable hysteresis, and an analog input. When configured as an analog input, the digital section of the pin is
disabled
