RV-8564 datasheet(3/40 Pages) MICROCRYSTAL

3 / 40 page

Micro Crystal

Real Time Clock / Calendar Module

RV-8564

3/40

9.3. SETTING AND READING THE TIME ...................................................................................................... 18

9.4. ALARM FLAG .......................................................................................................................................... 20

9.5. STOP BIT FUNCTION.............................................................................................................................. 21

9.5.1. FIRST INCREMENT OF TIME CIRCUITS AFTER STOP BIT RELEASE........................................ 22

9.6. RESET ...................................................................................................................................................... 22

10.CHARACTERISTICS OF THE I

2C BUS .......................................................................................................... 23

10.1. BIT TRANSFER ....................................................................................................................................... 23

10.2. START AND STOP CONDITIONS .......................................................................................................... 23

10.3. SYSTEM CONFIGURATION.................................................................................................................... 24

10.4. ACKNOWLEDGE ..................................................................................................................................... 25

11.I

2C BUS PROTOCOL....................................................................................................................................... 26

11.1. ADDRESSING .......................................................................................................................................... 26

11.2. CLOCK AND CALENDAR READ AND WRITE CYCLES ...................................................................... 26

11.2.1. WRITE MODE ................................................................................................................................... 26

11.2.2. READ MODE AT SPECIFIC ADDRESS........................................................................................... 27

11.2.3. READ MODE..................................................................................................................................... 27

11.3. INTERFACE WATCHDOG TIMER .......................................................................................................... 28

12.ABSOLUTE MAXIMUM RATING .................................................................................................................... 28

13.FREQUENCY CHARACTERISTICS................................................................................................................ 29

13.1. FREQUENCY VS. TEMPERATURE CHARACTERISTICS .................................................................... 29

14.DC CHARACTERISTICS ................................................................................................................................. 30

15.I

2C BUS TIMING CHARACTERISTICS ........................................................................................................... 31

15.1. TIMING CHART........................................................................................................................................ 31

16.RECOMMENDED REFLOW TEMPERATURE (LEADFREE SOLDERING) .................................................. 32

17.PACKAGES ..................................................................................................................................................... 33

17.1. DIMENSIONS AND SOLDERPADS LAYOUT ........................................................................................ 33

17.2. MARKING AND PIN #1 INDEX................................................................................................................ 34

18.PACKING INFORAMTION............................................................................................................................... 35

18.1. CARRIER TAPE ....................................................................................................................................... 35

18.2. PARTS PER REEL................................................................................................................................... 36

18.3. REEL 13 INCH FOR 12 mm TAPE.......................................................................................................... 37

18.4. REEL 7 INCH FOR 12 mm TAPE............................................................................................................ 38

19.HANDLING PRECAUTIONS FOR CRYSTALS OR MODULES WITH EMBEDDED CRYSTALS ................ 39

20.DOCUMENT REVISION HISTORY.................................................................................................................. 40

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