33.10 I/O Pin Characteristics
| Symbol | Description | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| VIL | Input low-voltage, except RESET pin as I/O | -0.2 | - | 0.3 × VDD | V | |
| VIH | Input high-voltage, except RESET pin as I/O | 0.7 × VDD | - | VDD + 0.2V | V | |
| IIH / IIL | I/O pin input leakage current, except RESET pin as I/O | VDD = 5.5V, pin high | - | < 0.05 | - | µA |
| VDD = 5.5V, pin low | - | < 0.05 | - | |||
| VOL | I/O pin drive strength | VDD = 1.8V, IOL = 1.5 mA | - | - | 0.36 | V |
| VDD = 3.0V, IOL = 7.5 mA | - | - | 0.6 | |||
| VDD = 5.0V, IOL = 15 mA | - | - | 1 | |||
| VOH | I/O pin drive strength | VDD = 1.8V, IOH = 1.5 mA | 1.44 | - | - | V |
| VDD = 3.0V, IOH = 7.5 mA | 2.4 | - | - | |||
| VDD = 5.0V, IOH = 15 mA | 4 | - | - | |||
| Itotal | Maximum combined I/O sink current per pin group(1) | - | - | 100 | mA | |
| Maximum combined I/O source current per pin group(1) | - | - | 100 | |||
| VIL2 | Input low-voltage on RESET pin as I/O | -0.2 | - | 0.3 × VDD | V | |
| VIH2 | Input high-voltage on RESET pin as I/O | 0.7 × VDD | - | VDD + 0.2V | V | |
| VOL2 | I/O pin drive strength on RESET pin as I/O | VDD = 1.8V, IOL = 0.1 mA | - | - | 0.36 | V |
| VDD = 3.0V, IOL = 0.25 mA | - | - | 0.6 | |||
| VDD = 5.0V, IOL = 0.5 mA | - | - | 1 | |||
| VOH2 | I/O pin drive strength on RESET pin as I/O | VDD = 1.8V, IOH = 0.1 mA | 1.44 | - | - | V |
| VDD = 3.0V, IOH = 0.25 mA | 2.4 | - | - | |||
| VDD = 5.0V, IOH = 0.5 mA | 4 | - | - | |||
| tRISE | Rise time | VDD = 3.0V, load = 20 pF | - | 2.5 | - | ns |
| VDD = 5.0V, load = 20 pF | - | 1.5 | - | |||
| tFALL | Fall time | VDD = 3.0V, load = 20 pF | - | 2.0 | - | ns |
| VDD = 5.0V, load = 20 pF | - | 1.3 | - | |||
| CPIN | I/O pin capacitance except TWI pins | - | 3 | - | pF | |
| CPIN | I/O pin capacitance on TWI pins | - | 10 | - | pF | |
| RP | Pull-up resistor | 20 | 35 | 50 | kΩ |
Note:
- Pin group x (Px[7:0]). The combined continuous sink/source current for all I/O ports should not exceed the limits.