RV-3029 Datasheet, PDF (3/67 Pages) MICORO CRYSTAL SWITZERLAND – DTCXO Temperature Compensated Real Time Clock

Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3029
4.4. TIMER FUNCTION ................................................................................................................................... 29
4.4.1. TIMER INTERRUT ............................................................................................................................ 31
4.5. ALARM FUNCTION ................................................................................................................................. 32
4.5.1. ALARM INTERRUPT ........................................................................................................................ 33
4.6. INTERRUPT OUTPUT INT....................................................................................................................... 34
4.7. WATCH ENABLE FUNCTION ................................................................................................................. 35
4.8. SELF-RECOVERY SYSTEM ................................................................................................................... 35
4.9. CLOCK OUTPUT CLKOUT ..................................................................................................................... 36
5. COMPENSATION OF FREQUENCY DEVIATION AND FREQUENCY DRIFT vs TEMPERATURE ............ 37
5.1. TEMPERATURE CHARACTERISTICS TUNING FORK CRYSTAL....................................................... 37
5.2. COMPENSATION PRINCIPLE ................................................................................................................ 38
5.2.1. THERMOMETER AND TEMPERATURE VALUE ............................................................................ 39
5.2.2. SETTING THE FREQUENCY COMPENSATION PARAMETERS .................................................. 40
5.3. METHOD OF COMPENSATING THE FREQUENCY DEVIATION ......................................................... 41
5.3.1. CORRECT METHOD FOR TESTING THE TIME ACCURACY ....................................................... 42
5.3.2. TESTING THE TIME ACCURACY USING CLKOUT OUTPUT........................................................ 42
5.3.3. TESTING THE TIME ACCURACY USING INTERRUPT OUTPUT 1 Hz ......................................... 43
5.4. TIME ACCURACY OPT: A / OPT: B ....................................................................................................... 45
6. I²C INTERFACE ............................................................................................................................................... 47
6.1. I²C INTERFACE CHARACTERISTICS.................................................................................................... 47
6.2. I²C INTERFACE SYSTEM CONFIGURATION ........................................................................................ 47
6.3. BIT TRANSFER ....................................................................................................................................... 48
6.4. START AND STOP CONDITIONS .......................................................................................................... 48
6.5. ACKNOWLEDGE ..................................................................................................................................... 49
6.6. I²C INTERFACE PROTOCOL .................................................................................................................. 50
6.7. I²C DEVICE ADDRESSES ....................................................................................................................... 50
6.8. I²C INTERFACE READ AND WRITE DATA TRANSMISSION............................................................... 51
6.8.1. WRITE MODE DATA TRANSMISSION............................................................................................ 51
6.8.2. READ MODE DATA TRANSMISSION AT SPECIFIC ADDRESS.................................................... 52
6.8.3. READ MODE..................................................................................................................................... 53
7. ELECTRICAL CHRACTERISTICS .................................................................................................................. 54
7.1. ABSOLUTE MAXIMUM RATINGS .......................................................................................................... 54
7.2. FREQUENCY AND TIME CHARACTERISTICS ..................................................................................... 54
7.3. STATIC CHARACTERISTICS ................................................................................................................. 55
7.4. I²C INTERFACE TIMING CHARACTERISTICS ...................................................................................... 56
8. APPLICATION INFORMATION ....................................................................................................................... 58
8.1. RECOMMENDED REFLOW TEMPERATURE (LEADFREE SOLDERING) .......................................... 59
9. PACKAGES ..................................................................................................................................................... 60
9.1. DIMENSIONS AND SOLDERPADS LAYOUT ........................................................................................ 60
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