Table Of Contents - Epson RX8010SJ Applications Manual

Real time clock module
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Notice ................................................................................................................................ 1
Revision History ................................................................................................................. 2
Table of contents ............................................................................................................... 3
1. Overview ........................................................................................................................ 5
2. Block Diagram ............................................................................................................... 5
3. Terminal description ....................................................................................................... 6
4. External Dimensions ...................................................................................................... 7
5. Absolute Maximum Ratings ........................................................................................... 8
6. Recommended Operating Conditions ............................................................................ 8
7. Frequency Characteristics ............................................................................................. 8
8. Electrical Characteristics ............................................................................................... 9
8.1.DC characteristics .............................................................................................................................. 9
8.1.1.DC characteristics(1) ........................................................................................................... 9
8.2.AC characteristics ............................................................................................................................ 10
8.2.1.AC characteristics(1) ......................................................................................................... 10
8.2.2. AC characteristics (2) ....................................................................................................... 10
9. Note of usage in power On / Off. .................................................................................. 11
10. Reference information ................................................................................................ 13
11. Application notes ........................................................................................................ 14
12.Overview of Functions and Description of Registers ................................................... 15
12.1. Overview of Functions .................................................................................................................. 15
8) Digital offset function ......................................................................................................................... 15
Digital offset function ............................................................................................................................. 15
12.2. Register table ................................................................................................................................ 16
12.3. Description of registers ................................................................................................................. 17
12.3.1. Clock and calendar counter ............................................................................................ 17
12.3.2. RAM registers ................................................................................................................. 17
12.3.3. Alarm registers ............................................................................................................... 17
12.3.4. Wakeup Timer setting and Timer counter register .......................................................... 17
12.3.5. Function-related register 1. ............................................................................................. 17
12.3.6. Function-related register 2. ............................................................................................. 18
12.3.7. Reserved bit ................................................................................................................... 18
13. How to use ................................................................................................................. 19
13.1. Clock calendar explanation ........................................................................................................... 19
13.1.1. Clock counter.................................................................................................................. 19
13.1.2. Week counter ................................................................................................................. 19
13.1.3. Calendar counter ............................................................................................................ 19
13.2. Wakeup Timer Interrupt Function ................................................................................................. 20
13.2.2. Wakeup timer start timing ............................................................................................... 22
13.2.3. Wakeup timer interrupt interval (example) ...................................................................... 22
13.2.4. Diagram of wakeup timer interrupt function .................................................................... 23
13.3. Alarm Interrupt Function ............................................................................................................... 24
13.3.1. Related registers for Alarm interrupt functions................................................................ 24
13.3.2. Examples of alarm settings ............................................................................................ 25
13.3.3. Diagram of alarm interrupt function ................................................................................ 26
13.4. Time Update Interrupt Function .................................................................................................... 27
RX8010SJ
ETM37E-07
Seiko Epson Corporation
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