ESP-05 ESP8266 Serial WiFi Transceiver Module
ESP-05 overview
The ESP-05 is an ESP8266 Serial WiFi Transceiver Module, supplied in a QFN-32 package. Main ratings: Controller ESP8266EX Serial WiFi 32-bit Tensilica L106 SoC; Working voltage 3.3V; Supported voltage 3.0 - 3.6V; Working current 71-80mA. This page brings together the ESP-05 pinout and key specifications, with the full datasheet PDF to preview below or download.
ESP-05 ESP8266 UART WiFi module is an ultra-low power consumption, WiFi passthrough module. The module offers a complete and self-contained Wi-Fi networking solution, allowing it to either host the application or offload all Wi-Fi networking functions from another application processor. ESP-05 has powerful onboard processing and storage capabilities that allow it to be integrated with the sensors and other application-specific devices through its GPIOs with minimal development up-front and minimal loading during runtime. The module's high degree of on-chip integration allows for minimal external circuitry, and the entire solution is designed to occupy minimal PCB area.
ESP-05 module is addressable over SPI and UART, making it an exceptionally easy choice for anyone wanting to start with Internet of Things design. It also allows AT commands to connect to WiFi networks and also allows you to open TCP connections without the need to have a TCP/IP stack running in your own microcontroller: The user can simply connect any MCU to the module and start pushing data up to the Internet.
Key specifications
Datasheet
ESP-05 features
- SDIO 2.0, SPI, UART
- 32-pin QFN package
- Integrated RF switch, balun, 24dBm PA, DCXO, and PMU
- Integrated RISC processor, on-chip memory, and external memory interfaces
- Integrated MAC/baseband processors
- Quality of Service management
- I2S interface for high-fidelity audio applications
- On-chip low-dropout linear regulators for all internal supplies
- Proprietary spurious-free clock generation architecture
ESP-05 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | Reset | active low reset (apply low voltage level to reset), EXT_RSTB pin 32 on ESP8266 chip |
| 2 | GND | Ground Pin |
| 3 | Rx | UART receive pin (3.3V logic level) |
| 4 | Tx | UART Transmit pin (3.3V logic level) |
| 5 | Vcc | Chip Supply Voltage |
| 6 | GND (ANT) | Ground Pin (ANT) |
ESP-05 specifications
| Controller | ESP8266EX Serial WiFi 32-bit Tensilica L106 SoC |
|---|---|
| Working voltage | 3.3V |
| Supported voltage | 3.0 - 3.6V |
| Working current | 71-80mA |
| Maximum current | 300mA |
| Shallow sleep current | 2mA |
| Deep sleep current | 0.02mA |
| Flash memory | 8 MB / 1 MB |
| WiFi Protocols | 802.11b/g/n |
| Frequency range | 2.4GHz-2.5GHz (2412M-2484M) |
| WiFi Modes | Client, Soft AP, Client+Soft AP (station, softAP, station+softAP) |
| Security | WPA-PSK, WPA2-PSK |
| Encryption | WEP, TKIP, AES |
| Network protocols | IPv4, TCP/UDP/HTTP/FTP |
| General Purpose Pins (In/Out, GPIO) | 2 |
| Maximum current per general purpose contact | 12mA, recommended 6mA |
| Output power in 802.11b mode | +20dBm |
| Interfaces | UART, GPIO |
| Baud rate | 300-4608000 baud, default 115200 baud |
| Built-in blocks | network matching, phase-locked loop, power management, regulation blocks |
| WiFi antenna | U.FL IPEX external antenna connector |
| Pin spacing | 2.54 mm |
| Working temperature | -40°...+125° |
| Dimensions | 14.2 x 14.2 x 3mm |
ESP-05 applications
- IoT device design
- EDGE computing architecture
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