Pin Functional Grouping
@schematic tool (with includeNets) to verify connectivity and re-wire any lost connections.Table
| Pin No. | Pin Name | Section | Pin Group | Suggested Pin Type | Suggested Pin Orientation | Sub-symbol Designator Suffix |
|---|---|---|---|---|---|---|
| 1 | GND | Ground | Ground | Ground | Bottom | Power |
| 2 | 3V3 | Power | Power | Power In | Top | Power |
| 3 | EN | Control | EN | Input | Left | Control |
| 4 | IO4 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 5 | IO5 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 6 | IO6 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 7 | IO7 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 8 | IO15 | Clock/GPIO | 32 kHz Crystal | Bi-Directional | Left | Crystal |
| 9 | IO16 | Clock/GPIO | 32 kHz Crystal | Bi-Directional | Left | Crystal |
| 10 | IO17 | Analog/GPIO | ADC2 / Touch / UART1 GPIO | Bi-Directional | Left | ADC |
| 11 | IO18 | Analog/GPIO | ADC2 / Touch / UART1 GPIO | Bi-Directional | Left | ADC |
| 12 | IO8 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 13 | IO19 | Communication | USB | Bi-Directional | Left | USB |
| 14 | IO20 | Communication | USB | Bi-Directional | Left | USB |
| 15 | IO3 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 16 | IO46 | GPIO | General GPIO / Other | Bi-Directional | Left | GPIO |
| 17 | IO9 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 18 | IO10 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 19 | IO11 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 20 | IO12 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 21 | IO13 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 22 | IO14 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 23 | IO21 | GPIO | General GPIO / Other | Bi-Directional | Left | GPIO |
| 24 | IO47 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 25 | IO48 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 26 | IO45 | GPIO | General GPIO / Other | Bi-Directional | Left | GPIO |
| 27 | IO0 | Control/GPIO | Boot / Strapping | Bi-Directional | Left | Control |
| 28 | IO35 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 29 | IO36 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 30 | IO37 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 31 | IO38 | GPIO/Communication | Flash / PSRAM / SPI-related GPIO | Bi-Directional | Left | SPI |
| 32 | IO39 | Debug/GPIO | JTAG | Bi-Directional | Left | JTAG |
| 33 | IO40 | Debug/GPIO | JTAG | Bi-Directional | Left | JTAG |
| 34 | IO41 | Debug/GPIO | JTAG | Bi-Directional | Left | JTAG |
| 35 | IO42 | Debug/GPIO | JTAG | Bi-Directional | Left | JTAG |
| 36 | RXD0 | Communication | UART0 | Input | Left | UART0 |
| 37 | TXD0 | Communication | UART0 | Output | Right | UART0 |
| 38 | IO2 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 39 | IO1 | Analog/GPIO | ADC1 / Touch GPIO | Bi-Directional | Left | ADC |
| 40 | GND | Ground | Ground | Ground | Bottom | Power |
| 41 | EPAD | Ground | Ground | Ground | Bottom | Power |
Table
| Group | Pins |
|---|---|
| Power / 3V3 | 2: 3V3 |
| Ground | 1: GND, 40: GND, 41: EPAD |
| Control / Enable | 3: EN |
| Boot / Strapping | 27: IO0 |
| USB | 13: IO19, 14: IO20 |
| UART0 | 36: RXD0, 37: TXD0 |
| JTAG | 32: IO39, 33: IO40, 34: IO41, 35: IO42 |
| 32 kHz Crystal | 8: IO15, 9: IO16 |
| ADC1 / Touch GPIO | 4: IO4, 5: IO5, 6: IO6, 7: IO7, 12: IO8, 15: IO3, 38: IO2, 39: IO1 |
| ADC2 / Touch / UART1 GPIO | 10: IO17, 11: IO18 |
| Flash / PSRAM / SPI-related GPIO | 17: IO9, 18: IO10, 19: IO11, 20: IO12, 21: IO13, 22: IO14, 24: IO47, 25: IO48, 28: IO35, 29: IO36, 30: IO37, 31: IO38 |
| General GPIO / Other | 16: IO46, 23: IO21, 26: IO45 |
Group summary