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1.1. Features 802.11 b/g/n Integrated low power 32-bit MCU Integrated 10-bit ADC Integrated TCP/IP protocol stack Integrated TR switch, balun, LNA, power amplifier and matching network Integrated PLL, regulators, and power management units Supports antenna diversity ...
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1.2. Parameters Table 1 below describes the major parameters. Table 1 Parameters Categories Items Values Certificates FCC/CE/TELEC WiFi Parameters WiFi Protocols 802.11 b/g/n Frequency Range 2.4GHz-2.5GHz (2400M-2483.5M) UART/SDIO/SPI/I2C/I2S/Ir Remote Control Peripheral Bus GPIO/PWM Operating Voltage 3.0~3.6V Hardware Operating Current Average value: 80mA Parameters Operating Temperature Range -40°~125°...
2. Pin Descriptions There are altogether 18 pin counts, the definitions of which are described in Table 2 below. Table 2 Pin Descriptions Pin Name Function 3.3V power supply (VDD) Chip enable pin. Active high. IO14 GPIO14; HSPI_CLK IO12 GPIO12; HSPI_MISO IO13 GPIO13;...
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The following are measured under room temperature conditions with 3.3V and 1.1V power supplies. Table 5 Receiver Sensitivity Parameters Typical Unit Input frequency 2412 2484 Ω Input impedance Input reflection Output power of PA for 72.2Mbps 15.5 16.5 17.5 Output power of PA for 11b mode 19.5 20.5 21.5...
3. Functional Descriptions 3.1. MCU ESP8266EX is embedded with Tensilica L106 32-bit micro controller (MCU), which features extra low power consumption and 16-bit RSIC. The CPU clock speed is 80MHz. It can also reach a maximum value of 160MHz. ESP8266EX is often integrated with external sensors and other specific devices through its GPIOs; codes for such applications are provided in examples in the SDK.
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Several SPI modes can be supported, including Standard SPI, Dual SPI, and Quad SPI. Therefore, please choose the correct SPI mode when you are downloading into the fl ash, otherwise firmwares/programs that you downloaded may not work in the right way. 3.3.
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Interface Pin Name Description Devices with UART interfaces can be connected with the module. Downloading: U0TXD+U0RXD or GPIO2+U0RXD Communicating: UART0: UART0: U0TXD, U0RXD, MTDO (U0RTS), MTCK (U0CTS) Debugging: UART1_TXD TXD (U0TXD) (GPIO2) can be used to print debugging information. RXD (U0RXD) UART IO15 (RTS) IO13 (CTS)
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3.5. Absolute Maximum Ratings Table 8 Absolute Maximum Ratings Rating Condition Value Unit ℃ Storage Temperature -40 to 125 ℃ Maximum Soldering Temperature Supply Voltage IPC/JEDEC J-STD-020 +3.0 to +3.6 3.6. Recommended Operating Conditions Table 9 Recommended Operating Conditions Operating Condition Symbol Unit ℃...
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4. RF Performance Description Min. Typ. Unit Input frequency 2400 2483.5 Input impedance Input reflection Output power of PA for 72.2Mbps 15.5 16.5 17.5 Output power of PA for 11b mode 19.5 20.5 21.5 Sensitivity CCK, 1Mbps CCK, 11Mbps 6Mbps (1/2 BPSK) 54Mbps (3/4 64-QAM) HT20, MCS7 (65Mbps, 72.2Mbps) Adjacent Channel Rejection...
Federal Communication Commission Interference Statement This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions: (3) This device may not cause interference; and (4) This device must accept any interference, including interference that may cause undesired operation of the device.
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