Real Time Clock/RTC DS1307 I2C - Grove
Product information:
The Grove RTC module is based on the clock chip DS1307, which supports the I2C protocol. It utilizes a Lithium cell battery (CR1225).
The clock/calendar provides seconds, minutes, hours, day, date, month, and year. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap years.
The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. And it is valid up to 2100. In order to gain a robust performance, you must put a 3-Volt CR1225 lithium cell in the battery-holder.
The DS1307 has a built-in power sense circuit that detects power failures and automatically switches to the battery supply. If you use the primary power only, the module may not work normally, because the crystal may not oscillate.
View the link below for instructions.
- With Grove connection cable
- CR1225 battery not included!
- Seeed Grove part number: 101020013
Click to view the product's website.
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