HYM1307 I2C Serial Real-time Clock Chip with 56-Byte RAM

HYM1307 is a low-power, 56-byte user non-volatile SRAM (NV SRAM), full BCD clock/calendar circuit. Addresses and data are transmitted via a serial I2C bus. The clock/calendar provides second, minute, hour, week, day, month, and year information. For months less than 31 days, the date at the end of the month is automatically adjusted, and it also has a leap year correction function. The clock can operate in either 24-hour format or 12-hour format with AM/PM marks. HYM1307 has a built-in voltage detection circuit with power-down detection function. When the power is turned off, it can automatically switch to the backup power (battery) supply.

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