Espressif’s ESP32-C2 is a small-sized, low-cost, low-power IoT chip. It is equipped with a RISC-V 32-bit single-core processor, built-in 272 KB SRAM and 576 KB ROM, and supports 2.4 GHz Wi-Fi and Bluetooth 5 (LE). ESP32-C2 is designed for high-capacity, low-data-rate simple IoT applications, capable of adding stable wireless connectivity to sockets, lighting, sensors, and simple home appliances, providing users with a cost-effective development platform.
Semtech’s SX1262 is a long-range, low-power sub-GHz wireless transceiver that supports operating bands ranging from 150MHz–960MHz. The SX1262 offers two modulation methods, LoRa® and traditional (G)FSK. It integrates a low-noise amplifier (LNA), and also integrates an efficient power amplifier (PA). In the LoRa® modulation mode, the maximum receive sensitivity can reach -137dBm, and its transmit power can go up to +22dBm. Through optimizing the chip structure and internal logic, the SX1262 can achieve a minimum receive current of 4.2mA and can fall as low as 160nA in sleep mode.
• 32-bit RISC-V single-core processor with a clock frequency of up to 120 MHz
• On-chip ROM: 576 KB / SRAM: 272 KB
• Supports IEEE 802.11 b/g/n protocol
• Wi-Fi mode supports 1T1R mode with data rates up to 72.2 Mbps
• Supports Infrastructure BSS Station mode, SoftAP mode, Station + SoftAP mode, and promiscuous mode concurrently
• Supports BLE 5.0
• High power mode (+20 dBm)
• Bluetooth transmission rates' support includes 125 kbps, 500 kbps, 1 Mbps, 2 Mbps
• Supports LoRa® long-distance transmission communication with the supported frequencies: 433/868/915MHz (optional)
• Under LoRa® mode, it supports high sensitivity (-137dBm), high power (+22dBm), and low power consumption (as low as 4.6mA for receiving current)
• Module size: 20mm×26mm×2.8mm