It is actually available for sometime, but is not available in the shopping cart website for online sale. You can order the module by contacting us by phone or email to sales@tri-plc.com.
User who is purchasing the I2C-FRTC should be familiar with I2C bus operation as we don't provide background information about I2C bus itself. However, there are ready I2C programming examples demonstrating access to the 128K bytes EEPROM built-in to the I2C-FRTC module.