LEW840X, OpenSource Multiple Network Gateways
Dra$ Ver 0.21 Mar. 2020
2. Specifications
At the heart of LEW840X Series gateway is an ESP32M16 module with an ESP32 D0WD SoC. It has an
Xtensa dual core 32 bit LX6 microprocessors, up to 600 MIPS. A Microchip LAN8720 is the Ethernet PHY
interface.
ESP32 communicates with nRF9160 LTE-M/NB/IoT module using an UART interface. It also communicates
with BT840F BLE 5 module using a second UART. BT840F controls LoRa module LR62E through an SPI
interface.
BT840F supports 802.15.4 Thread and Zigbee radio protocols. It can be replaced with BT40F, an RF5340
module supporting BLE 5.1, Thread, and Zigbee.
Gateway can be powered by a 5V micro USB AC adapter, a 48V DC power supply, or powered through
Ethernet cable
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