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80/160MHz WiFi MCU
| Part number | ESP8266EX |
|---|---|
| Category | Microcontrollers & Processors › ESP32 / ESP8266 |
| Package | QFN-32-1EP |
| Pins | 33 |
| Frequency | 160 MHz |
ESP8266EX pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VDDA | power | |
| 2 | LNA | bidirectional | |
| 3 | VDD3P3 | power | |
| 4 | VDD3P3 | power | |
| 5 | VDD_RTC | power | |
| 6 | TOUT | input | |
| 7 | CHIP_PU | input | |
| 8 | XPD_DCDC | bidirectional | |
| 9 | MTMS | bidirectional | |
| 10 | MTDI | bidirectional | |
| 11 | VDDPST | power | |
| 12 | MTCK | bidirectional | |
| 13 | MTDO | bidirectional | |
| 14 | GPIO2 | bidirectional | |
| 15 | GPIO0 | bidirectional | |
| 16 | GPIO4 | bidirectional | |
| 17 | VDDPST | power | |
| 18 | SDIO_DATA_2 | bidirectional | |
| 19 | SDIO_DATA_3 | bidirectional | |
| 20 | SDIO_CMD | bidirectional | |
| 21 | SDIO_CLK | bidirectional | |
| 22 | SDIO_DATA_0 | bidirectional | |
| 23 | SDIO_DATA_1 | bidirectional | |
| 24 | GPIO5 | bidirectional | |
| 25 | U0RXD | bidirectional | |
| 26 | U0TXD | bidirectional | |
| 27 | XTAL_OUT | bidirectional | |
| 28 | XTAL_IN | bidirectional | |
| 29 | VDDD | power | |
| 30 | VDDA | power | |
| 31 | RES12K | input | |
| 32 | ~EXT_RSTB | input | |
| 33 | GND | ground |
Schematic symbol and footprint
Schematic symbol
Footprint: QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.