ACME has released a new radio module for the Internet of Things. It is YARM! YARM is a small RF module, large 22mmx14mm, which uses the ISM frequency band of 868 MHz. It consists of two devices: the transceiver Atmel ATA8510 and MCUs, Atmel always, SAML21 (ARM Cortex M0 + @ 48MHz).
This frequency band has limits and rules to follow. Power and transmission times are regulated by the directives. In the graphics I will propose a summary of these rules, to consider for your projects.
The YARM module has a number of I/O available for connecting external devices. Also available are the ATA8510 transceiver device pins. The development and debugging is performed using a board called YARM-DEV.
The YARM-Dev module is the board to develop and test the final product, designed around the YARM. The module has many YARM pins routed to 2.54mm pads. It also has a connector for connecting a custom adapter for debugging; this adapter is able to make available the connections to the ATA8510 debugger and to MCU debugger.
1.Low Power Consumption
2.Very Small (22x14 mm)
3.Very Long Range Capability
5.Simple to Program
One SPI, one I2C, a serial port. And three analog input and one analog output! So you have no excuse!