The WLR089U0 from Microchip is an Ultra-Low Power, LoRa module that operates from 863 to 928 MHz. This module combines the ATSAMR34J18B SiP (System-in-Package), 32.768 kHz crystal, 32 MHz TCXO, RF switch, lumped element harmonics rejection filter, impedance matching circuits, Low Pass Filter (LPF), and required RF shielding in a compact 17 mm x 13.5 mm design.
The WLR089U0 supports LoRa, FSK, MSK, and OOK modulations and delivers up to 18.6 dBm TX power with an RX sensitivity down to -136 dBm. This standalone module includes a 32-bit ARM Cortex-M0+ processor and offers 256KB of Flash and 40KB of SRAM. The highly configurable module peripherals include up to 4 SERCOMs (configurable as I2C/SPI /UART/LIN interfaces) with one in the low power domain, 7 12-bit ADC channels and 2 analog comparators.
LoRa technology is a spread spectrum protocol optimized for low data-rate, ultra-long range signaling. It is ideal for battery-powered remote sensors and controls. The module also has a USB interface, making it ideal for USB dongle applications or for software updates via USB. With ultra-low power sleep currents as low as 790nA, this module is ideal for battery-powered remote sensor applications.
