Real-time clock integrated circuit comprising power management functions

A real time dock and power management integrated circuit consisting of:

• a) an RTC block comprising an internal clock generator for generating a system clock signal that controls a device;
• and
• b) a power management block comprising:
• i) a primary power source connection for connection of the circuit to a primary power source,
• ii) a backup power source connection for connection of the circuit to a backup power source,
• iii) a Feed Power Downconverter Component configured to reduce voltage potential from the backup power source prior to feeding power to the RTC block by a factor of at least 3:2,
• iv) a backup power source charger power booster/regulator component to increase or regulate voltage from the primary power source to a predetermined charger input voltage,
• v) a charge control logic component configured to control the level of charge of the backup power source,
• vi) a backup power source cut-off logic component to cease current draw on the backup power source under predetermined conditions, and
• vii) a mode control logic component operably coupled to the charge control logic component and the battery cutoff logic component to enable operation of the charge control logic component and the battery cut-off logic component under predetermined conditions.