RTC5 click released.
As we on the northern hemisphere transition to the colder months, some people have a harder time waking up. Why not build a reliable alarm clock with RTC5 clicks. The board carries MCP79510, a real-time clock/calendar from Microchip.
Compared to our other four RTC options, this is the first one with an SPI interface. The SPI runs at a clock rate of up to 5MHz, which enables you to set up an alarm within 1 millisecond.
RTC5 click is equally reliable on a larger time scale. Namely, the chip automatically compensates for months shorter than 31 days, and also keeps track of leap years.
For backup power, we chose to put a Li-po coin cell battery connector on RTC5 click. A variety of backup power options are available on other RTC clicks, different batteries, super caps and so on.