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                                                                                                             2,272 
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                                                                                                     | 
                                                IC RTC CLK/CALENDAR SPI 16-QFN | 
                                                                                                            EnerChip™ | 
                                                                                                                    Discontinued at Digi-Key | 
                                                                                                                    Tape & Reel (TR) | 
                                                                                                                    -20°C ~ 70°C | 
                                                                                                                    Surface Mount | 
                                                                                                                    Alarm, Watchdog Timer | 
                                                                                                                    16-LQFN | 
                                                                                                                    Clock/Calendar | 
                                                                                                                    SPI | 
                                                                                                                    16-QFN (5x5) | 
                                                                                                                    2.5 V ~ 5.5 V | 
                                                                                                                    - | 
                                                                                                                    HH:MM:SS (12/24 hr) | 
                                                                                                                    YY-MM-DD-dd | 
                                                                                                                    2.75 V ~ 3.25 V |