描述
Parameter information
model：ESP-M1
brand：DOIT
Origin：Chinese mainland
Image and text details
Product Introduction
Specifications：https://github.com/doit-open-org/chip_specification_sheet/blob/main/ESP8266/ESP-M1_User_Manual.pdf
The core processor of the ESP-M1/M2 module uses the cost-effective ESP8285 chip. The ESP8285 offers complete Wi-Fi networking functionality — it can operate independently, or serve as a slave device paired with another host MCU. The ESP8285 only requires an SPI/SDIO interface or an I2C/UART port to function as a Wi-Fi adapter, making it applicable to designs based on any microcontroller.
Product Specifications
Product Parameters
| Module Model | ESP-M1/M2 | Description |
|---|---|---|
| Package Type | SMD | Surface-mount |
| Module Size | 12.3 × 15/20 mm | ±0.2 mm |
| Certifications | Fully Certified | FCC / CE / REACH / RoHS / SRRC / ANATEL |
| SPI FLASH | 32 Mbit | Default |
| Supported Interfaces | / | UART / SDIO / SPI / I²C / I²S / IR Remote Control |
| Available I/O | 9 | |
| Baud Rate | 4,608,000 bps | Supported: 300–4,608,000 bps; Default: 115,200 bps |
| Frequency Range | 2.4 GHz | 2.4–2.5 GHz (2400–2483.5 MHz) |
| Antenna Type | Onboard / External | Onboard PCB Antenna / IPEX Gen 1 |
| Transmit Power | / | 802.11b: +20 dBm; 802.11g: +17 dBm; 802.11n: +14 dBm |
| Security | / | WPA / WPA2 / WEP / TKIP / AES |
| Supply Voltage | 3.3 V | 2.5–3.6 V; Avg. Current: 80 mA; Peak Current: >200 mA |
| Operating Temperature | Industrial Grade | −20°C to +85°C |
| AT Support | Built-in Smart Processing | Readable via AT Commands |
Pin definition
| No. | Pin Name | Type | Function |
|---|---|---|---|
| 1 | ADC | I | A/D converter pin. Input voltage: 0–1 V; output range: 0–1024. |
| 2 | EN | I | Chip enable. High: enabled; Low: shutdown, low power. |
| 3 | IO14 | I/O | GPIO14; HSPI_CLK |
| 4 | IO12 | I/O | GPIO12; HSPI_MISO |
| 5 | IO13 | I/O | GPIO13; HSPI_MOSI; UART0_CTS |
| 6 | IO15 | I/O | GPIO15; MTDO; HSPICS; UART0_RTS; onboard pull-down resistor. |
| 7 | VCC | P | Module power: 3.3 V |
| 8 | GND | P | GND |
| 9 | IO2 | I/O | GPIO2; UART1_TXD |
| 10 | IO0 | I/O | GPIO0; SPI_CS2 |
| 11 | IO4 | I/O | GPIO4 |
| 12 | IO5 | I/O | GPIO5 |
| 13 | RXD | I/O | GPIO3; UART Rx for Flash programming. |
| 14 | TXD | I/O | GPIO1; UART Tx for Flash programming. |
| 15 | RST | I | External reset (active low); resets module; onboard pull-up resistor. |
| 16 | GND | P | GND |
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