The new device combines the short-range high throughput capability and easy access of BLE with the long-range features of LoRa technology. The module uses Insight SiP’s patented “Antenna in Package” technology together with an advanced SiP design approach to embed both BLE and LoRa Antennas into a device measuring 9.8 x 17.2 x 1.7 mm.
The BLE part of the ISP4520 integrates the WLCSP nRF52832 chip from Nordic Semiconductor. It is a fully featured BLE device with integrated 32 MHz / 32 KHz crystals, RF antenna and matching circuit and DC-DC convertor. The ISP4520 device includes an ARM Cortex M4F processor with 512 KB Flash and 64 KB RAM to provide a large application space, even allowing for the BLE and LoRa protocol stacks. A full set of interfaces are supplied, including 30 GPIOs, an analogy to digital convertor, and SPI, I2C and UART buses. It also provides NFC connectivity for easy pairing.
The LoRA radio is based on a Semtech SX126x chipset, which utilises the very latest in LoRa technology, with optimised power performance. The Semtech chip is driven via the ARM Cortex M4F of the Nordic device.
The module is designed for battery-based operation. It is equipped with a range of deep-sleep modes to meet differing requirements. Its standby current is as low as 0.5uA. Receive and Transmit power are similarly best in class, with actual current for BLE at approx. 5mA, and LoRa dependent on chosen output power.
The module is compatible with the LoRaWAN open standard developed by the LoRa Alliance. The module runs the Nordic Bluetooth soft device which now supports a full Bluetooth V4.2 stack and is Bluetooth 5.0 ready.