Data Sheet

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HE WiFi IoT Module Datasheet
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1. Description
HE is a high performance, low cost 150M, 2.4G WiFi module. It is compatible with 802.11b/g/n. provide
Ethernet, USB, UART and GPIOs interface. HE use small outline package, it is used widely in WiFi solutions.
HÉ means “core” in Chinese. Intend of HÉ module is to be used as the core of the IoT, WiFi solution.
HE is based on Open Source OpenWrt system. User is free to modify the software for their applications.
2. Specification
CPU: ATHEROS AR9331 chipset, which integrates MIPS 24Kc processor, CPU 400MHz, Switch (MAC, PHY)
and integrates with MAC, RF, PA and LNA for WiFi.
RAM: 64MB;
Flash: 16MB
Interfaces: 2 x RJ45, 1 x USB Host, 1 x UART, 14 multiplex GPIOs
OS: Open Source OpenWrt
Power: 3.3v power input
WiFi: Support 150M 2.4Ghz WiFi, 802.11 b/g/n
Frequencyrange: 2.4~2.4835GHz
Modulation: BPSK, QPSK, CCK and OFDM (BPSK/QPSK/16-QAM/ 64-QAM)
Sensitivity @PER : 135M : -65dBm@10%PER; 65M : -65dBm@10%PER; 54M : -68dBm@10%PER;
11M : -84dBm@8% PER; 6M : -88dBm@10% PER; 1M : -90dBm@8% PER
TypicalDistance: Indoor: 60m (max); Outdoor 150m (max) (with 1.5dBi antenna)
Connector: I-PEX connector. Provide Optional ANT pin out for SMT
3. Applications
Internet of Things
Voice over IP
Mesh WiFi
Industrial Control