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M7981U1

The M7981U1 is an IEEE 802.11ax compliant radio module with Mediatek MT7981A SoC based solder down stamp SOM(System on Module). It can deliver up to 24dBm (2 streams) high output power, but still keep a very compact dimension of 50mm(Length) x 36mm(Width) x 3mm (Hight),  making it a perfect WiFi solution for IOT(Internet Of Things) applications. 

Features

  • Wi-Fi6/6E IEEE 802.11a/b/g/n/ac/ax 2.4/5GHz dual band dual concurrent applications

  • Supports MIMO 2x2(2.4GHz) and 3x3(5GHz) WiFi operations

  • Supports WiFi PHY rate of 573.5Mbps for 2.4Ghz(40MHz) and 3,603Mbps for 5GHz(160MHz)

  • SoC: MTK Filogic830 MT7981BA Dual Core A53 1.3Hz CPU

  • RF IC: MT7976CN, 802.11ax WiFi6 2.4/5GHz 2x2 radios

  • Memory: 2MB NOR + 16GB EMMC + 1GB DDR4 ​

  • Ethernet Interface : 1 x HSGMII + 1 x GbE PHY

  • Interfaces: USB3, SPI,UART, I2C, GPIO

  • Debian v11.8 and OpenWRT 23.05 OS support

  • Connector: Solder down stamp

  • Dimension: 36 x 50 mm

System

  • CPU: Mediatak MT7981AA Dual ARM A53 1.3GHz SoC

  • Memory: 

    • NOR: 2MB, for boot loader (this is mandatory)

    • EMMC: 16GB, Max. 32GB

    • DDR4: Max. 1GB, 2133Mbps, (512Mb x 16bits)

    • * NAND locations is reserved​

WLAN

  • Standard: IEEE802.11a/b/g/n/ac/ax WiFi6

  • Bandwidth: 2.4GHz 2X2 40MHz+ 5GHz 3x3 160MHz 802.11ax

  • Frequency: 2412 MHz ~2472MHz, 5180 MHz ~5825MHz

  • MIMO: 2.4GHz 2x2 + 5GHz 3x3

  • Transmit power

    • 2.4GHz: Max. 21dBm/MCS0

    • 5GHz: Max. 21dBm/MCS0

  • Sensitivity: -96dBm ~ -52 dBm ​

  • Channel size: 20/40/80/160 MHz

  • Modulation: BPSK, QPSK, 64/256/1024 QAM

  • Data rate

    • 2.4GHz

    • 802.11b: 1, 2, 5.5, 11Mbps

    • 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps

    • 802.11n: up to 300Mbps-2x2 MIMO

    • 802.11ax: up to 573.5Mbps – 2x2 MIMO

    • 5GHz

    • 802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps

    • 802.11n: up to 450Mbps – 3x3 MIMO (40MHz channel)

    • 802.11ac: up to 1300Mbps – 3x3 MIMO (80MHz channel)

    • 802.11ax: up to 3,603Mbps – 3x3 MIMO (160MHz channel)

  • Security: AES-CCMP, GCMP hardware processing​

MISC

  • Power consumption: Typical 8W, Max. 11W with full Tx​

  • Operating temperature: -10°C ~ +70°C

  • Storage temperature: -40°C  ~ +90°C

  • Operating humidity: 5%-95%(Non-condensing)

  • Dimension: 50 X 36 X 3.0mm

  • Antenna connector: 3 x Ipex connectors

  • Power supply: +3.3V

  • Interfaces: 

    • 1 x PCIE2.0 (only available with MT7981A)

    • 1 x GBE PHY

    • 1 x HSGMII/SGMII+

    • 1 x USB2.0 Host

    • 2 x UART (1 x 2-pin + 1 x 4-pins)

    • 1 x hardware watchdog

    • 1 x system reset

    • 1 x WPS

    • Shared GPIOs

  • Software: ​

    • OpenWRT 23.05 support with Linux kernel v5.15; or

    • Debian 11.8 Bullseye with Linux kernel v5.15​​​​

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