# ESP32-D0WD-V3

**Espressif Systems** · RF Transceiver ICs · QFN-48-EP(5x5)

ESP32-D0WD-V3 from Espressif Systems, in a QFN-48-EP(5x5). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VDDA | power_in | Analog supply, 2.3 V to 3.6 V. |
| 2 | LNA_IN | bidirectional | RF input to the low-noise amplifier (LNA) and RF output from the power amplifier (PA). |
| 3 | VDD3P3 | power_in | Analog supply, 2.3 V to 3.6 V. |
| 4 | VDD3P3 | power_in | Analog supply, 2.3 V to 3.6 V. |
| 5 | SENSOR_VP | input | Input-only pin (GPIO36, ADC1_CH0, RTC_GPIO0) with no output driver and no internal pull-up or pull-down. |
| 6 | SENSOR_CAPP | input | Input-only pin (GPIO37, ADC1_CH1, RTC_GPIO1) with no output driver and no internal pull-up or pull-down. |
| 7 | SENSOR_CAPN | input | Input-only pin (GPIO38, ADC1_CH2, RTC_GPIO2) with no output driver and no internal pull-up or pull-down. |
| 8 | SENSOR_VN | input | Input-only pin (GPIO39, ADC1_CH3, RTC_GPIO3) with no output driver and no internal pull-up or pull-down. |
| 9 | CHIP_PU | input | Chip enable: high enables the chip, low shuts it down; must not be left floating. |
| 10 | VDET_1 | input | Input-only pin (GPIO34, ADC1_CH6, RTC_GPIO4) with no output driver and no internal pull-up or pull-down. |
| 11 | VDET_2 | input | Input-only pin (GPIO35, ADC1_CH7, RTC_GPIO5) with no output driver and no internal pull-up or pull-down. |
| 12 | 32K_XP | bidirectional | 32.768 kHz crystal input (GPIO32, ADC1_CH4, RTC_GPIO9, TOUCH9). |
| 13 | 32K_XN | bidirectional | 32.768 kHz crystal output (GPIO33, ADC1_CH5, RTC_GPIO8, TOUCH8). |
| 14 | GPIO25 | bidirectional | General-purpose I/O (GPIO25) also providing ADC2_CH8, RTC_GPIO6, DAC_1 and EMAC_RXD0 functions. |
| 15 | GPIO26 | bidirectional | General-purpose I/O (GPIO26) also providing ADC2_CH9, RTC_GPIO7, DAC_2 and EMAC_RXD1 functions. |
| 16 | GPIO27 | bidirectional | General-purpose I/O (GPIO27) also providing ADC2_CH7, RTC_GPIO17, TOUCH7 and EMAC_RX_DV functions. |
| 17 | MTMS | bidirectional | General-purpose I/O (GPIO14) that also serves as JTAG MTMS, HSPI clock, HS2_CLK and SD_CLK, with ADC2_CH6 and TOUCH6. |
| 18 | MTDI | bidirectional | General-purpose I/O (GPIO12) that is a strapping pin selecting the VDD_SDIO voltage at reset, and also serves as JTAG MTDI. |
| 19 | VDD3P3_RTC | power_in | RTC IO power input, 2.3 V to 3.6 V; also supplies the RTC and CPU domains and the internal VDD_SDIO LDO. |
| 20 | MTCK | bidirectional | General-purpose I/O (GPIO13) that also serves as JTAG MTCK, HSPI data, HS2_DATA3 and SD_DATA3, with ADC2_CH4 and TOUCH4. |
| 21 | MTDO | bidirectional | General-purpose I/O (GPIO15) that is a strapping pin controlling U0TXD printing at boot, and also serves as JTAG MTDO. |
| 22 | GPIO2 | bidirectional | General-purpose I/O (GPIO2) that is a boot-mode strapping pin, with ADC2_CH2, TOUCH2 and SD_DATA0 functions. |
| 23 | GPIO0 | bidirectional | General-purpose I/O (GPIO0) that is a boot-mode strapping pin, with ADC2_CH1, TOUCH1 and CLK_OUT1 functions. |
| 24 | GPIO4 | bidirectional | General-purpose I/O (GPIO4) with ADC2_CH0, TOUCH0, HSPIHD, HS2_DATA1 and SD_DATA1 functions. |
| 25 | GPIO16 | bidirectional | General-purpose I/O (GPIO16) with HS1_DATA4, U2RXD and EMAC_CLK_OUT functions; used as CE# when connecting external PSRAM and then requires a pull-up. |
| 26 | VDD_SDIO | power_out | Output of the internal LDO set to 1.8 V (max 40 mA, 1.65 V to 2.0 V) or to VDD3P3_RTC voltage; may also be driven by an external supply. |
| 27 | GPIO17 | bidirectional | General-purpose I/O (GPIO17) with HS1_DATA5, U2TXD and EMAC_CLK_OUT_180 functions. |
| 28 | SD_DATA_2 | bidirectional | SDIO slave data line 2 (GPIO9), also usable as SPIHD and U1RXD. |
| 29 | SD_DATA_3 | bidirectional | SDIO slave data line 3 (GPIO10), also usable as SPIWP and U1TXD. |
| 30 | SD_CMD | bidirectional | SDIO slave command line (GPIO11), also usable as SPICS0 and U1RTS. |
| 31 | SD_CLK | bidirectional | SDIO slave clock line (GPIO6), also usable as SPICLK and U1CTS. |
| 32 | SD_DATA_0 | bidirectional | SDIO slave data line 0 (GPIO7), also usable as SPIQ and U2RTS. |
| 33 | SD_DATA_1 | bidirectional | SDIO slave data line 1 (GPIO8), also usable as SPID and U2CTS. |
| 34 | GPIO5 | bidirectional | General-purpose I/O (GPIO5) that is a strapping pin for SDIO slave timing, with VSPICS0 and EMAC_RX_CLK functions. |
| 35 | GPIO18 | bidirectional | General-purpose I/O (GPIO18) with HS1_DATA7 and VSPICLK functions. |
| 36 | GPIO23 | bidirectional | General-purpose I/O (GPIO23) with HS1_STROBE and VSPID functions. |
| 37 | VDD3P3_CPU | power_in | CPU and digital IO power input, 1.8 V to 3.6 V. |
| 38 | GPIO19 | bidirectional | General-purpose I/O (GPIO19) with U0CTS, VSPIQ and EMAC_TXD0 functions. |
| 39 | GPIO22 | bidirectional | General-purpose I/O (GPIO22) with U0RTS, VSPIWP and EMAC_TXD1 functions. |
| 40 | U0RXD | bidirectional | UART0 receive signal (also GPIO3 and CLK_OUT2), commonly used for debug. |
| 41 | U0TXD | bidirectional | UART0 transmit signal (also GPIO1, CLK_OUT3 and EMAC_RXD2), commonly used for debug; a strapping pin for U0TXD printing control. |
| 42 | GPIO21 | bidirectional | General-purpose I/O (GPIO21) with VSPIHD and EMAC_TX_EN functions. |
| 43 | VDDA | power_in | Analog supply, 2.3 V to 3.6 V. |
| 44 | XTAL_N | output | External main crystal oscillator output; connects to an active or passive crystal (2 MHz to 60 MHz; 40 MHz required when using Wi-Fi/Bluetooth). |
| 45 | XTAL_P | input | External main crystal oscillator input (differential clock positive side) for an active or passive crystal. |
| 46 | VDDA | power_in | Analog supply, 2.3 V to 3.6 V. |
| 47 | CAP2 | input | Connects to CAP1 through a 3.3 nF (10%) capacitor in parallel with a 20 kΩ resistor. |
| 48 | CAP1 | input | Connects to ground through a 10 nF capacitor in series. |
| 49 | GND | power_in | Ground; this is the exposed thermal pad of the QFN package. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Espressif Systems |
| Package | QFN-48-EP(5x5) |
| Category | RF And Wireless |
| Pins | 49 |

## CAD (KiCad official)

- Symbol: `ESP32-D0WD-V3`
- Footprint: `Package_DFN_QFN:QFN-48-1EP_5x5mm_P0.35mm_EP3.7x3.7mm`
- 3D model: QFN-48-EP(5x5) (KiCad packages3D, STEP)
- 3D model files: `esp32-d0wd-v3-etched.step` / `esp32-d0wd-v3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `esp32-d0wd-v3.step` / `esp32-d0wd-v3.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Espressif Systems datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588893898513399808) (74 pp, sha256 `bac015371d876744`, retrieved 2026-10-09, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/esp32-d0wd-v3-datasheet.pdf)