The RC-SPIRIT1-XXX module is based on STMicroelectronics Spirit1 transceiver. This device is a high performance very low power RF transceiver designed for RF wireless application in the sub 1GHz band.
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RC-SPIRIT1-868 module is based on STMicroelectronics SPIRIT1 transceiver.
This device is a high performance ultra low power RF transceiver designed for RF wireless application in the sub 1GHz band.
The module is designed for maximum performance in a minimal space, with 4 programmable I/O pins.
Programmable from external microcontroller via SPI interface.
For more information and details, please refer to the Spirit1 datasheet (www.st.com).
Sub-1Ghz technology is becoming one of the chief driving forces behind the Internet of Things (Iot), in particular this type of module is ideal for this applications basically for the following reasons :
| Technical Characteristics | MIN | TYP | MAX | UNIT |
| Supply Voltage | 1.8 | 3.0 | 3.60 | Volt |
| Supply Current RX mode | 10 | mA | ||
| Supply Current TX mode -----> +7dBm | 9 | mA | ||
| Supply Current TX mode -----> +11.6dBm | 22 | mA | ||
| Supply Current Standby Mode | 600 | nA | ||
| Supply Current Shut Down Mode | 2.5 | nA | ||
| Operative Frequency | 868 | MHz | ||
| RF Power Output 50ohm (programmable parameter) | +16 | dBm | ||
| RF Sensitivity | -118 | dBm | ||
| Operating Temperature range | -30 | +75 | °C |
| Pads | Name | Description | Pin Type |
| 1 | SDO | SPI slave data output | Digital out |
| 2 | SDI | SPI slave data input | Digital in |
| 3 | SCLK | SPI slave clock input | Digital in |
| 4 | CSn | SPI chip select | Digital in |
| 5 | GPIO-0 | General purpose I/O configurable through SPI registers | Digital I/O |
| 6 | GPIO-1 | General purpose I/O configurable through SPI registers | Digital I/O |
| 7 | GPIO-2 | General purpose I/O configurable through SPI registers | Digital I/O |
| 8 | GPIO-3 | General purpose I/O configurable through SPI registers | Digital I/O |
| 9 | GND | Connect to GND | Ground pin |
| 10 | SDN | Shutdown input pin | Digital in |
| 11 | GND | Connect to GND | Ground pin |
| 12 | GND | Connect to GND | Ground pin |
| 13 | VCC | 1.8Volt to 3.6Volt | Power Supply |
| 14 | VCC | 1.8Volt to 3.6Volt | Power Supply |
| 15 | GND | Connect to GND | Ground pin |
| 16 | GND | Connect to GND | Ground pin |
| 17 | GND | Connect to GND | Ground pin |
| 18 | GND | Connect to GND | Ground pin |
| 19 | GND | Connect to GND | Ground pin |
| 20 | ANT | Connect to external Antenna | Antenna |
| 21 | GND | Connect to GND | Ground pin |
To make immediate usable this module with STMicroelectronics development system, has been realized the following board adapter (see picture below).
The RC-SPIRIT1-XXX-EK is equipped with Antenna (with SMA connector) and UFL-SMA cable.
