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wireless routing module
MT7688AN chip
low-cost and low-power IoT module
wireless routing module
MT7688AN chip
low-cost and low-power IoT module
E103-W20(7688) MT7688AN chip solution Open Wrt operating system and custom development patch type small size serial port to WiFi wireless routing module

[Chip solution]：MT7688AN

[WiFi protocol]：IEEE802.11b/g/n

[Transmission power]：20~24dBm

[MCU main frequency]：580MHz

[Communication distance]： 200m

[Product size]：34.1*18.7*2.77mm/36.1*18.7*2.7mm

[Introduction]：The E103-W20 (7688) module is a low-cost and low-power IoT module based on MediaTek MT7688AN and MT7628AN. This module leads to all interfaces of MT7688AN/MT7628AN, supports OpenWrt operating system and custom development, has rich interfaces and powerful processors, can be widely used in smart devices or cloud service applications, etc., and can be freely used for secondary development .

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Electrical parametersunitmodel
Remark
E103-W20（7688）E103-W20（7688）
working voltageV3.3±0.2VVoltage over 3.5 V will permanently burn the module
communication levelV3.3 Voltage over 3.5 V will permanently burn the module
No-load running currentmA180±50Average power consumption
Supply Current RequirementmA≥1000
temperatureOperating
temperature		℃-20～+55Industrial grade
Storage
temperature		-40～+85
humidity use %RH10～95(non-condensing)
storage5～95(non-condensing)


Hardware parametersmodelRemark
E103-W20（7688）E103-W20（7688）
chip
MT7688NNMT7628NN
Flash32MBCustomizable 16MB/8MB
Memory
DDR2 128MBCustomizable DDR2 256M/64M/32MB
Memory
MIPS24KEc
Packaging method patchSMD
Antenna interfaceIPEX×1
（1T2R 2.4 GHz with 150Mbps PHY data rate）		IPEX×2
（2T2R 2.4 GHz with
300Mbps PHY data
rate）		Characteristic impedance about 50 ohms
interfaceEthernet
interface		5 10M/100M adaptiveInterfaces supported by factory default firmware 1WAN, 4 LAN .
UART3 way

The interfaces supported by the firmware are 2-way

UART with transparent transmission function .

SDIO1 wayFirmware interface not supported
SPI1 wayFirmware interface not supported
I2C1 wayFirmware interface not supported
I2S1 wayFirmware interface not supported
PWM1 wayFirmware interface not supported
GPIO8 or more FirmwareSupported Interfaces Defined Functions
size34.1*18.7*2.7mm36.1*18.7*2.7mmThe error size is ±0.1mm

Note: 1. The default firmware of the module is the firmware developed by our company based on Linux; Ethernet, WiFi, UART0 and
UART1 of this firmware have transparent transmission function;
2. The OPENWRT program or the original MTK Linux program can be programmed according to the actual usage.



RF parametersunitModelRemark
E103-W20（7688）E103-W20（7688）
transmit powerdBm20～24
transmit power
-IEEE 802.11b/g/n
Ideal Range MeterM200Antenna gain 5dBi , in a line of sight
main frequency
MB580