Have you considered a PCF8563 instead of a DS1307? It has many of the same features but does not have any RAM. It has clock output, though different frequencies, and an interrupt output that can be set from a few seconds to several hours.
Have you considered a PCF8563 instead of a DS1307? It has many of the same features but does not have any RAM. It has clock output, though different frequencies, and an interrupt output that can be set from a few seconds to several hours.