XBee/XBee-PRO S2C DigiMesh 2.4s have 15 General Purpose Input / Output (GPIO) ports available. The exact list depends on the device configuration, as some GPIO pads are used for purposes such as serial communication.
| GPIO Electrical Specification | Value |
|---|---|
| Low Schmitt switching threshold | 0.42 - 0.5 x VCC |
| High Schmitt switching threshold | 0.62 - 0.8 x VCC |
| Input current for logic 0 | -0.5 µA |
| Input current for logic 1 | 0.5 µA |
| Input pull-up resistor value | 29 kΩ |
| Input pull-down resistor value | 29 kΩ |
| Output voltage for logic 0 | 0.18 x VCC (maximum) |
| Output voltage for logic 1 | 0.82 x VCC (minimum) |
| Output source/sink current for pad numbers 3, 4, 5, 10, 12, 14, 15, 16, 17, 25, 26, 28, 29, 30, and 32 on the SMT modules | 4 mA |
| Output source/sink current for pin numbers 2, 3, 4, 9, 12, 13, 15, 16, 17, and 19 on the TH modules | 4 mA |
| Output source/sink current for pad numbers 7, 8, 24, 31, and 33 on the SMT modules | 8 mA |
| Output source/sink current for pin numbers 6, 7, 11, 18, and 20 on the TH modules | 8 mA |
| Total output current (for GPIO pads) | 40 mA |