47.4 I/O Pin Characteristics

Three are three different pin types with three different speeds: Backup, Normal, and High Sink(3,4). The Drive Strength bit is located in the Pin Configuration register PORT (PORT.PINCFG.DRVSTR).

Table 47-4. I/O Pins - Common Characteristics
SymbolParametersConditionsMin.Typ.Max.Unit
VILInput low-level voltageVDD=1.62-2.7V--0.25×VDDV
VDD=2.7V-3.63V--0.3×VDD
VIHInput high-level voltageVDD=1.62-2.7V0.7×VDD--
VDD=2.7V-3.63V0.55×VDD--
VOLOutput low-level voltageVDD>1.6V, IOL max-0.1×VDD0.2×VDD
VOHOutput high-level voltageVDD>1.6V, IOH max0.8×VDD0.9×VDD-
RPULLPull-up - Pull-down resistanceAll pins excepted PA24, PA25204060kΩ
PA24, PA25(1)50100150
ILEAKInput leakage currentPull-up resistors disabled -1+/-0.0151µA
Table 47-5. I/O Pins - Maximum Output Current
SymbolParameterConditionsBackup pins in Backup modeBackup and Normal pinsHigh Sink pinsBackup and Normal pinsHigh Sink pinsUnit
DRVSTR=0DRVSTR=1
IOLMaximum Output low-level currentVDD=1.62V-3V0.0051224mA
VDD=3V-3.63V0.0082.56612
IOHMaximum Output high-level currentVDD=1.62V-3V0.0050.71.51.53
VDD=3V-3.63V0.00825510
Table 47-6. I/O Pins - Dynamic Characteristics(1)
SymbolParameterConditionsBackup pins in Backup modeBackup and Normal pinsHigh Sink pinsBackup and Normal pinsHigh Sink pinsUnit
DRVSTR=0DRVSTR=1
tRISEMaximum Rise timeVDD=3.3V, load=20pF200013664.5nS
tFALLMaximum Fall timeVDD=3.3V, load=20pF200012774.5
Note:
  1. These values are based on simulation. They are not covered by production test limits or characterization.
  2. 2. The pins PA12, PA13, PB12, PB13, PB16, PB17, PB30, PB31 are limited on output low-level current in I2C standard mode (Sm) and Fast mode (Fm). The limitation is:
    • 2.5mA instead of 3mA for a VOL=0.4V
    • 3mA instead of 6mA for a VOL=0.6V.
  3. The following pins are High Sink pins, and have different properties than normal pins: PA08, PA09, PA16, PA17, PA22, PA23, PA27, PA31.
  4. The following pins are Backups pins and have different properties than normal pins: PA00, PA01, PB00, PB01, PB02, PB03.