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The PT7C4363BQ serial real-time clock is an automotive low-power clock/calendar with a programmable square-wave output.
Address and data are transferred serially via a 2-wire bidirectional bus. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in the 24-hour format indicator.
Table 1 shows the basic functions of PT7C4363BQ. More details are shown in section: overview of functions.
Drop-In Replacement for PT7C4363
Supports High-ESR Crystals Up To 100kΩ
Supports Alarm and Timer
Supports I2C-Bus's High Speed Mode (400 kHz)
Uses External 32.78kHz Quartz Crystal
Programmable Square Wave Output Signal Oscillator Stop Flag
Includes time (Hour/Minute/Second) and calendar (Year/Month/Date/Day) counter functions (BCD code)
Low Backup Current: typ. 400nA at VDD=3.0V and TA=25°C