45.9 I/O Pin Characteristics

There are two different pin types with two different speeds: Normal and High Sink(2). The Drive Strengh bit is located in the Pin Configuration register PORT (PORT.PINCFG.DRVSTR).

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

The RESET_N pin has the same properties as standard GPIOs.

Table 45-14. I/O Pins Common Characteristics
SymbolParameterConditionsMin.Typ.Max.Units
VILInput low-level voltageVDD=2.7-4.5V--0.3*VDDV
VDD=4.5-5.5V--0.3*VDD
VIHInput high-level voltageVDD=2.7-4.5V0.7*VDD--
VDD=4.5-5.5V0.7*VDD--
VOLOutput low-level voltageVDD>2.7V, IOL max-0.1*VDD0.2*VDD
VOHOutput high-level voltageVDD>2.7V, IOH max0.8*VDD0.9*VDD-
RPULLPull-up - Pull-down resistanceAll pins204060kΩ
ILEAKInput leakage currentPull-up resistors disabled -1-1µA
Table 45-15. I/O Pins Maximum Output Current
SymbolParameterConditionsNormal pinsHigh Sink pinsNormal pinsHigh Sink pinsUnits
DRVSTR=0DRVSTR=1
IOLMaximum output low-level currentVDD=2.7V-4.5V2.55510mA
VDD=4.5V-5.5V5101020
IOHMaximum output high-level currentVDD=2.7V-4.5V1.5336
VDD=4.5V-5.5V36612
Table 45-16.  I/O Pins Dynamic Characteristics (1)
SymbolParameterConditionsNormal pinsHigh Sink pinsNormal pinsHigh Sink pinsUnits
DRVSTR=0DRVSTR=1
tRISEMaximum rise timeVDD = 5.0V, load = 20pF151287ns
tFALLMaximum fall timeVDD = 5.0V, load = 20pF141177
Note:
  1. These values are based on simulation and are not covered by test limits in production or characterization.
  2. The following pins are High-Sink pins and these pins have different properties than normal pins: PA10, PA11, PB10, PB11.