74ABT32PW,118

<p>The PCF85263A is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption and with automatic switching to battery on main power loss. The RTC can also be configured as a stop-watch (elapsed time counter). Three time log registers triggered from battery switch-over as well as input driven events. Featuring clock output and two independent interrupt signals, two alarms, I²C interface and quartz crystal calibration.</p></p>

<ul><li>UL Recognized Component (PCF85263ATL)</li><li>Provides year, month, day, weekday, hours, minutes, seconds and 100th secondsbased on a 32.768 kHz quartz crystal</li><li>Stop-watch mode for elapsed time counting. From 100th seconds to 999999 hours</li><li>Two independent alarms</li><li>Battery back-up circuit</li><li>WatchDog timer</li><li>Three timestamp registers</li><li>Two independent interrupt generators plus predefined interrupts at every second,minute, or hour</li><li>Frequency adjustment via programmable offset register</li><li>Clock operating voltage: 0.9 V to 5.5 V</li><li>Low current; typical 0.28 µA at V_DD = 3.0 V and T_amb = 25 °C</li><li>400 kHz two-line I²C-bus interface (at V_DD = 1.8 V to 5.5 V)</li><li>Programmable clock output for peripheral