Espressif ESP8266 Serial ESP-01 WiFi Module offers a user-friendly WiFi SoC (system on a chip) solution to meet the continuous demands for a power-friendly, compact and reliable solution to a vast range of issues in the IoT Industry. The Espressif ESP8266 Serial ESP-01 WiFi Module is integrated with TCP/IP protocol stack that can give any MCU access to your home, work, or industrial WiFi network.
The module can perform either as a standalone application or as a slave to a host MCU. Espressif ESP8266 Serial ESP-01 WiFi Module can be applied to any MCU design as a Wi-Fi adaptor through SPI/SDIO or UART interfaces. The ESP8266 WIFI module also features an upgraded version of Ten silica’s L106 Diamond series 32-bit processor and SoC SRAM, allowing easy interfacing with external sensors and other devices through the GPIOs.

Espressif ESP8266 Serial ESP-01 Key Features
- Low-cost, compact and powerful Wi-Fi Module
- Can be used as Station or Access Point or both combined
- Supports Deep sleep (<10uA)
- Supports serial communication hence compatible with many development platforms like Arduino
- Can be programmed using Arduino IDE or AT-commands or Lua Scrip
- 802.11 b/g/n support
- 802.11 n support (2.4 GHz), up to 72.2 Mbps
- 2 x virtual Wi-Fi interface
- Automatic beacon monitoring (hardware TSF)
- Support Infrastructure BSS Station mode/SoftAP mode/Promiscuous mode
ESP8266 Serial ESP-01 Pinout

Pin Description
Pin Name | Pin No. | Description |
---|---|---|
Ground | 1 | Ground Pin |
TX/GPIO-1 | 2 | Acts as a general purpose I/O, can also be connected to the RX pin of the programmer to upload the source program |
GPIO-2 | 3 | General purpose Input/output pin |
CH_EN | 4 | Chip Enable – Active high |
GPIO – 0 | 5 | General purpose Input/output pin 0 |
Reset | 6 | Resets the module |
RX/GPIO-3 | 7 | General purpose Input/output pin 3 |
Vcc | 8 | Chip Supply Voltage (3.3V Only) |
Espressif ESP8266 Serial ESP-01 Specifications
- Power Supply: +3.3V only
- Current Consumption: 100mA
- I/O Voltage: 3.6V (max)
- I/O source current: 12mA (max)
- Built-in low power 32-bit MCU @ 80MHz
- 512kB Flash Memory
- 8Mbit external QSPI flash memory (1MByte)
- 32-bit Tensilica Xtensa LX106 CPU running 80MHz
- 3.3V supply (current can spike 300mA+, depending on mode)
- PCB-trace antenna
- 2 x 4 dual-in-line pinout
- Dimensions: 14.3 x 24.8mm
- weight: 1.5g
Applications
- Home appliances
- Home automation
- Smart plugs and lights
- Industrial wireless control
- Baby monitors
- IP cameras
- Sensor networks
- Wearable electronics
Datasheet
You can download the datasheet for Espressif ESP8266 Serial ESP-01WiFi Module by clicking the link given below:
See Also: 74LS138 3 to 8 Decoder/Demultiplexer | CD4059 Program Divide-by-N Counter | CD4048 CMOS Multifunction Expandable 8-Input Gate