Difference between revisions of "GPIO Pinout"
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H5 is only on the A and B models. GPIO 28-31 are not available on the + models. These signals should probably not be used. | H5 is only on the A and B models. GPIO 28-31 are not available on the + models. These signals should probably not be used. | ||
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Revision as of 04:13, 22 January 2015
Contents
General Purpose Input Output (GPIO)
Resources:
Notes:
- GPIO pins are 3.3 volt logic levels and are not tolerant of 5V levels
- GPIO properties can be set as a block (GPIO pins 0-27 are in the same block) not per pin.
- Can interrupt based on high/low/rise/fall/change.
- Input hysteresis (Schmitt trigger) can be on or off,
- Output slew rate can be fast or limited, and
- Source and sink currents are configurable from 2 mA up to 16 mA.
Color Legend
| Color Legend | |
|---|---|
| 3.3 VDC Power | Serial Console/Power |
| 5 VDC Power | HX711 Scale |
| Ground | I2C Sensors |
| Unused | I2S Audio |
GPIO ordered by Header Pins
The first 26 pins on J8 (A+ and B+ models) are the same as H1 on the A and B models.
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H5 is only on the A and B models. GPIO 28-31 are not available on the + models. These signals should probably not be used.
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GPIO ordered by Signal Name
| Signal | Alt Function | J8 | H1 | H5 |
|---|---|---|---|---|
| 3.3 VDC Power | 1 | 1 | 3 | |
| 3.3 VDC Power | 17 | 17 | ||
| 5 VDC Power | 2 | 2 | 1 | |
| 5 VDC Power | 4 | 4 | ||
| GPIO 2 | I2C | 3 | 3 | |
| GPIO 3 | I2C | 5 | 5 | |
| GPIO 4 | 7 | 7 | ||
| GPIO 5 | 29 | |||
| GPIO 6 | 31 | |||
| GPIO 7 | SPIO CE1 | 26 | 26 | |
| GPIO 8 | SPIO CE0 | 24 | 24 | |
| GPIO 9 | SPIO MISO | 21 | 21 | |
| GPIO 10 | SPIO MOSI | 19 | 19 | |
| GPIO 11 | SPIO SCLK | 23 | 23 | |
| GPIO 12 | PWM | 32 | ||
| GPIO 13 | 33 | |||
| GPIO 14 | TXD | 8 | 8 | |
| GPIO 15 | RXD | 10 | 10 | |
| GPIO 16 | 36 | |||
| GPIO 17 | 11 | 11 | ||
| GPIO 18 | PCM_CLK | 12 | 12 | |
| GPIO 19 | PCM_FS | 35 | ||
| GPIO 20 | PCM_DIN | 38 | ||
| GPIO 21 | PCM DOUT | 40 | ||
| GPIO 22 | 15 | 15 | ||
| GPIO 23 | 16 | 16 | ||
| GPIO 24 | 18 | 18 | ||
| GPIO 25 | 22 | 22 | ||
| GPIO 26 | 37 | |||
| GPIO 27 | 13 | 13 | ||
| GPIO 28 | I2C0_SDA | 3 | ||
| GPIO 29 | I2C0_SCL | 4 | ||
| GPIO 30 | 5 | |||
| GPIO 31 | 6 | |||
| I2C EEPROM ID_SD | 27 | |||
| I2C EEPROM ID_SC | 28 | |||
| Ground | 6 | 6 | 7 | |
| Ground | 9 | 9 | 8 | |
| Ground | 14 | 14 | ||
| Ground | 20 | 20 | ||
| Ground | 25 | 25 | ||
| Ground | 30 | |||
| Ground | 34 | |||
| Ground | 39 |
