LEW840X, OpenSource Multiple Network Gateways
Dra$ Ver 0.21 Mar. 2020
LEW840X Part Numbers
Possible part numbers of LEW840X Series are listed below.
• LTE-M/NB-IoT interface needs an external antenna. It is an optional feature.
• Ethernet interface is always supported.
• Bluetooth interface is supported by one of 4 BLE 5 modules or 4 BLE 5.1 modules. Module can be with an integrated
antenna, with an external antenna, and with an integrated power amplifier to boost TX power to +21 dBm. IEEE 802.15.4
Thread and Zigbee interfaces are supported by BLE modules.
• WiFi interface is supported with an integrated antenna or an external antenna.
• LoRa interface is an optional feature. An external antenna is required.
• Enclosure can be IP65 or IP51 rated.
• Power over Ethernet (PoE) can be supported for all gateways. IP51 gateway without PoE is powered by a micro USB AC
adapter. IP65 gateway without PoE is powered by 48V DC.
• Up to 3 external antennas can be supported. LTE and LoRa interfaces need external antennas. Integrated antenna and
external antenna can be supported for both BLE and WiFi.
LTE-M/NB-Iot Interfaces
LEW840X gateway uses a Nordic nRF9160 SICA module supporting LTE-M, NB/IoT and with GPS receiver.
An external LTE antenna is used. GPS receiver amplifier and antenna is integrated.
Microcontroller:
•
ARM® Cortex® -M33
•
1 MB flash, 256 kB low leakage RAM
•
ARM® Trustzone®
•
ARM® Cryptocell 310
•
Up to 4x SPI master/slave
•
Up to 4x I2C compatible two-wire master/slave.
•
Up to 4x UART (CTS/RTS)
•
I2S
•
Digital microphone interface (PDM)
•
4x pulse width modulator (PWM) unit
•
12-bit, 200 ksps ADC - 8 configurable channels with programmable gain
•
3x 32-bit timer with counter mode
•
2x real-time counter (RTC)
•
Programmable peripheral interconnect (PPI)
•
32 general purpose I/O pins
LTE modem:
•
Transceiver and baseband
5
