46.9 I/O Pin Characteristics

There are two different pin types with three different speeds: Normal and High Sink.

The Drive Strength bit is located in the Pin Configuration register of the PORT (PORT.PINCFG.DRVSTR).

Table 46-11. I/O Pins Common Characteristics
SymbolParameterConditionsMin.Typ.Max.Units
VILInput low-level voltageVDD=1.62V-2.7V--0.25*VDDV
VDD=2.7V-3.63V--0.3*VDD
VIHInput high-level voltageVDD=1.62V-2.7V0.7*VDD--
VDD=2.7V-3.63V0.55*VDD--
VOLOutput low-level voltageVDD>1.62V, IOL max-0.1*VDD0.2*VDD
VOHOutput high-level voltageVDD>1.62V, IOH max0.75*VDD0.85*VDD-
RPULLPull-up - Pull-down resistance204063kΩ
ILEAKInput leakage currentPull-up resistors disabled-1±0.0151µA
Table 46-12. I/O Pins Maximum Output Current
SymbolParameterConditionsNormal PinsHigh Sink Pins(2)Normal PinsHigh Sink Pins(2)Units
DRVSTR=0DRVSTR=1
IOLMaximum Output low-level currentVDD=1.62V-3V1224mA
VDD=3V-3.63V2.56612
IOHMaximum Output high-level currentVDD=1.62V-3V0.71.51.53
VDD=3V-3.63V25510
Table 46-13. I/O Pins Dynamic Characteristics(1)
SymbolParameterConditionsNormal PinsHigh Sink Pins(2)Normal PinsHigh Sink Pins(2)Units
DRVSTR=0DRVSTR=1
tRISEMaximum Rise timeVDD=3.3V, load=20 pF, 10%/90%13664.5ns
tFALLMaximum Fall timeVDD=3.3V, load=20 pF, 10%/90%12774.5

The pins with I2C alternative mode available are compliant(2) with I2C norms. All I2C pins support Standard mode (Sm), Fast mode (Fm), Fast plus mode (Fm+), and High speed mode (Hs, up to 3.4 MHz). The available I2C pins are listed in the I/O Multiplexing section.

Note:
  1. These values are based on simulation. They are not covered by production test limits or characterization.
  2. The following pins are High Sink pins and have different properties than normal pins: PA16, PA17, PA22,PA23, and PA31.