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 CharacteristicsSymbol | Parameters | Conditions | Min. | Typ. | Max. | Unit |
---|
VIL | Input low-level voltage | VDD=1.62-2.7V | - | - | 0.25×VDD | V |
VDD=2.7V-3.63V | - | - | 0.3×VDD |
VIH | Input high-level voltage | VDD=1.62-2.7V | 0.7×VDD | - | - |
VDD=2.7V-3.63V | 0.55×VDD | - | - |
VOL | Output low-level voltage | VDD>1.6V, IOL max | - | 0.1×VDD | 0.2×VDD |
VOH | Output high-level voltage | VDD>1.6V, IOH max | 0.8×VDD | 0.9×VDD | - |
RPULL | Pull-up - Pull-down resistance | All pins excepted PA24, PA25 | 20 | 40 | 60 | kΩ |
PA24, PA25(1) | 50 | 100 | 150 |
ILEAK | Input leakage current | Pull-up resistors disabled | -1 | +/-0.015 | 1 | µA |
Table 47-5. I/O Pins - Maximum Output CurrentSymbol | Parameter | Conditions | Backup pins in Backup mode | Backup and Normal pins | High Sink pins | Backup and Normal pins | High Sink pins | Unit |
---|
DRVSTR=0 | DRVSTR=1 |
---|
IOL | Maximum Output low-level current | VDD=1.62V-3V | 0.005 | 1 | 2 | 2 | 4 | mA |
VDD=3V-3.63V | 0.008 | 2.5 | 6 | 6 | 12 |
IOH | Maximum Output high-level current | VDD=1.62V-3V | 0.005 | 0.7 | 1.5 | 1.5 | 3 |
VDD=3V-3.63V | 0.008 | 2 | 5 | 5 | 10 |
Table 47-6. I/O Pins - Dynamic Characteristics(1)Symbol | Parameter | Conditions | Backup pins in Backup mode | Backup and Normal pins | High Sink pins | Backup and Normal pins | High Sink pins | Unit |
---|
DRVSTR=0 | DRVSTR=1 |
---|
tRISE | Maximum Rise time | VDD=3.3V, load=20pF | 2000 | 13 | 6 | 6 | 4.5 | nS |
tFALL | Maximum Fall time | VDD=3.3V, load=20pF | 2000 | 12 | 7 | 7 | 4.5 |
Note:
- These values are based on simulation. They are not covered
by production test limits or characterization.
- 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.
- The following pins are High Sink pins, and have different properties than
normal pins: PA08, PA09, PA16, PA17, PA22, PA23, PA27, PA31.
- The following pins are Backups pins and have different properties than
normal pins: PA00, PA01, PB00, PB01, PB02, PB03.