3pcs AT Fireware ESP-M4 Wireless WiFi Module ESP8285 Serial Port Transmission Control Module Compatible with ESP8266

Product description: The core processor of the ESP-M4 module uses the cost-effective chip ESP8285. The chip integrates an enhanced version of Tensilica's L106 Diamond Series 32-bit core processor in a smaller package with on-chip SRAM. The ESP8285 has a full Wi-Fi network function, which can be used independently or as a slave to other host MCUs. When the ESP8285 hosts an application, it can be launched directly from external Flash. The built-in cache helps improve system performance and optimizes the storage system. In addition, the ESP8285 can be used as a Wi-Fi adapter via the SPI/SDIO interface or I2C/UART port for any microcontroller-based design. The ESP-M4 module supports the standard IEEE 802.11 b/g/n/e/i protocol and the complete TCP/IP protocol stack. Users can use this module to add networking capabilities to existing devices or to build separate network controllers. The ESP-M4 module offers maximum practicality at the lowest cost, providing unlimited possibilities for Wi-Fi functionality to be embedded in other systems. Classification Item Parameter Wi-Fi Frequency range 2.4G~2.5G(2400M~2483.5M) Transmit power 802.11b: +20 dBm 802.11g: +17 dBm 802.11n: +14 dBm Receiving sensitivity 802.11b: -91 dbm (11Mbps) 802.11g: -75 dbm (54Mbps) 802.11n: -72 dbm (MCS7) Antenna PCB onboard antenna Hardware CPU Tensilica L106 32 bit microcontroller Peripheral UART/SDIO/SPI/I2C/I2S/IR remote control GPIO/ADC/PWM/SPI/I2C/I2S Operating Voltage 2.5V ~ 3.6V Working current Average current: 80 mA Operating temperature -40C ~ 125C Ambient temperature range -40C ~ 125C Package size 16mm x 24mm x 3mm Software Wi-Fi mode Station/SoftAP/SoftAP+Station Security Mechanism WPA/WPA2 Encryption type WEP/TKIP/AES Upgrade firmware UART Download/OTA (via network) Software development Non-RTOS/RTOS/Arduino IDE, etc. Network protocol IPv4, TCP/UDP/HTTP/FTP/MQTT User configuration AT+ instruction set / cloud server / Android / iOS APP Package includes: 3 x AT Fireware Module