Transcription of PCF85263A WatchDog timer - NXP
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PCF85263A WatchDog timer - NXP
PCF85263A . Tiny Real-Time Clock/calendar with alarm function, battery 2. switch-over, time stamp input, and I C-bus Rev. 22 September 2021 Product data sheet 1 General description 1. 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 2. clock output and two independent interrupt signals, two alarms, I C-bus interface and quartz crystal calibration.
corresponding alarm registers are all coded in Binary Coded Decimal (BCD) format. When one of the RTC registers is read, the contents of all time counters are frozen. Therefore, faulty reading of the clock and calendar during a carry condition is prevented. 7.1 Registers organization overview 7.1.1 Time mode registers
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