Mikroe RTC 14 Click measures the passage of time and features the Renesas ISL1221, a low-power RTC with battery-backed SRAM and event detection. The RTC 14 Click Board features low power consumption, a clock/calendar, and security and event functions. Additionally, along with the ISL1221, the RTC 14 Click is equipped with a button cell battery holder compatible with the 3000TR battery holder, suitable for 12mm coin cell batteries.
The RTC 14 Click operates with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This permits both 3.3V and 5V capable MCUs to use the I2C communication lines correctly.
Renesas ISL1221 low-power RTC