Product introduction:
The Wi-Fi module, also known as the serial port Wi-Fi module, belongs to the transmission layer of the Internet of Things. Its function is to convert the serial port or TTL level into an embedded module that conforms to the Wi-Fi wireless network communication standard. The built-in wireless network protocol IEEE802.11b.gn Protocol stack and TCP/IP protocol stack. Traditional hardware devices embedded in Wi-Fi modules can directly use Wi-Fi to connect to the Internet, which is an important part of realizing wireless smart home, M2M and other Internet of Things applications.
Characteristic:
■Complete 802.11b/g/n Wi-Fi SoC module
■Built-in Tensilica L106 ultra-low power consumption 32-bit micro MCU, main frequency supports 80 MHz and 160 MHz, supports RTOS
■Built-in 1 channel 10 bit high precision ADC
■Support UART/GPI0/ADC/PWM/SPI/IIC interface
■SMD-16 package
■Integrated Wi-Fi MAC/ BB/RF/PA/LNA
■Support multiple sleep modes, standby power consumption is as low as 1. OmW
■Serial rate up to 4Mbps
■ Embedded Lwip protocol stack
■Support STA/AP/STA+AP working mode
■Support Smart Config (APP) /AirKiss (WeChat) for Android and IOS one-click network configuration
■Support serial port local upgrade and remote firmware upgrade (FOTA)
■General AT commands can be used quickly
■Support secondary development, integrated Windows., Linux development environment
Description:
■ Modem-sleep is used for applications that require the CPU to be in working condition all the time, such as PWN or I2S applications. When maintaining the Wi-Fi connection, if there is no data transmission, you can turn off the Wi-FiModem circuit to save power according to the 802.11 standard (such as U-APSD). For example, in DTIM3, every 300ms of sleep and 3ms of wake-up to receive AP Beacon packets, etc., the overall average current is about 20 mA.
■ Light-sleep is used for applications where the CPU can be suspended, such as Wi-Fi switches. When maintaining Wi-Fi connection, if there is no data transmission, according to the 802.11 standard (such as U-APSD), turn off the Wi-Fi Modem circuit and suspend the CPU to save power. For example, in DTIM3, every 300ms of sleep. Wake up 3ms to receive AP Beacon packets, etc., the overall average current is about 2 mA.
■ Deep-seep is used for applications that do not need to maintain Wi-Fi connection all the time and only send data packets for a long time, such as a sensor that measures temperature every 100s. For example, after waking up every 300s, it takes 0.3s~1s to connect to the AP to send data, then the overall average current can be much less than 1mA. The current value of 20μA is measured at 2.5V.
