Document
EM MICROELECTRONIC - MARIN SA
603002
Title: Product Family: Part Number:
Application Note 603002
Highly accurate, DTCXO Temperature Compensated Real Time Clock / Calendar Module with I2C Interface
RV-3029
RV-3029
TABLE OF CONTENTS
1. OVERVIEW ........................................................................................................................................................ 4 1.1. GENERAL DESCRIPTION......................................................................................................................... 4 1.2. APPLICATIONS ......................................................................................................................................... 4
2. BLOCK DIAGRAM ............................................................................................................................................. 5 2.1. PINOUT ...................................................................................................................................................... 6 2.2. PIN DESCRIPTION .................................................................................................................................... 7 2.3. FUNCTIONAL DESCRIPTION................................................................................................................... 7 2.4. DEVICE PROTECTION DIAGRAM ........................................................................................................... 8
3. REGISTER ORGANIZATION ............................................................................................................................ 9 3.1. REGISTER OVERVIEW ............................................................................................................................. 9 3.2. CONTROL PAGE REGISTER FUNCTION.............................................................................................. 10 3.2.1. CONTROL_1 (address 00h…bits description).................................................................................. 10 3.2.2. CONTROL_INT (address 01h…bits description) .............................................................................. 10 3.2.3. CONTROL_INT FLAG (address 02h…bits description) ................................................................... 11 3.2.4. CONTROL_STATUS (address 03h…bits description) ..................................................................... 11 3.2.5. CONTROL_RESET (address 04h…bits description)........................................................................ 12 3.3. WATCH PAGE REGISTER FUNCTION .................................................................................................. 12 3.3.1. SECONDS, MINUTES, HOURS, DAYS, WEEKDAYS, MONTHS, YEARS REGISTER ................. 12 3.3.2. DATA FLOW OF TIME AND DATE FUNCTION............................................................................... 14 3.4. ALARM PAGE REGISTER FUNCTION .................................................................................................. 15 3.4.1. SECONDS, MINUTES, HOURS, DAYS, WEEKDAYS, MONTHS, YEARS ALARM REGISTER .... 15 3.5. TIMER PAGE REGISTER FUNCTION .................................................................................................... 17 3.6. TEMPERATURE PAGE REGISTER FUNCTION .................................................................................... 17 3.7. EEPROM DATA PAGE REGISTER FUNCTION..................................................................................... 17 3.8. EEPROM CONTROL PAGE REGISTER FUNCTION ............................................................................. 18 3.8.1. EEPROM CONTROL (address 30h…bits description) ..................................................................... 18 3.8.2. XTAL OFFSET (address 31h…bits description) ............................................................................... 18 3.8.3. XTAL TEMPERATUR COEFFICIENT (address 32h…bits description) ........................................... 18 3.8.4. XTAL TURNOVER TEMPERATUR COEFFICIENT T0 (address 33h…bits description)................. 19 3.9. RAM DATA PAGE REGISTER FUNCTION ............................................................................................ 19
4. DETAILED FUNCTIONAL DESCRIPTION ..................................................................................................... 20
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603002
4.1. POWER-UP, POWER MANAGEMENT AND BATTERY SWITCHOVER .............................................. 20 4.1.1. POWER UP SEQUENCE ................................................................................................................. 21 4.1.2. SUPPLY VOLTAGE OPERATING RANGE AND LOW VOLTAGE DETECTION ............................ 22
4.2. RESET .........................................................................................................................