The RTC 27 Click board from Mikroe provides ultra-low-power timekeeping with alarm, watchdog, and timestamp functions. Based on the mikroBUS add-on board socket standard, it integrates the NXP PCF8525 nano-power CMOS real-time clock and calendar chip with an I2C interface. The board is the 2000th member of the Click family, enabling developers to quickly build proof-of-concept designs, prototypes, and embedded applications.
Using the PCF8525’s default temperature compensation engine and integrated temperature sensor, the RTC 27 Click corrects crystal frequency drift, achieving typical ±30-ppm accuracy across temperature and up to 5× better timekeeping than an uncompensated RTC design. It provides time and calendar information, including year, month, day, weekday, hour, minute, second, and 1/100 second.
The RTC 27 Click operates with 3.3-V and 5-V logic voltage levels, while the PCF8525 consumes a typical 64 nA in timekeeping mode with a 3.3-V supply. This makes the board well suited for battery-powered and always-on designs, including portable instruments, wearables, industrial systems, and IoT applications.
The RTC 27 Click is available from Mikroe and its distributors with single-unit pricing of $19.
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