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S35390A датащи(PDF) 37 Page - Seiko Instruments Inc |
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S35390A датащи(HTML) 37 Page - Seiko Instruments Inc |
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37 / 51 page ![]() FOR AUTOMOTIVE 105°C OPERATION 2-WIRE REAL-TIME CLOCK Rev.2.2_00 S-35390A H Series Seiko Instruments Inc. 37 Flowchart of Initialization and Example of Real-time Data Set-up Figure 46 is a recommended flowchart when the master device shifts to a normal operation status and initiates communication with the S-35390A H Series. Regarding how to apply power, refer to " Power-on Detection Circuit and Register Status" . It is unnecessary for users to comply with this flowchart of real-time data strictly. And if using the default data at initializing, it is also unnecessary to set up again. Confirm data in status register 1 OK Set real-time data 1 Read real-time data 1 *2 Wait for 0.5 s *1 Read status register 1 POC = 0 NO YES BLD = 0 YES OK END Read status register 1 Read status register 1 NO NO YES START POC = 1 Set 24-hour / 12-hour mode to status register 1 Initialize (status register 1 B7 = 1) BLD = 0 YES Read real-time data 1 NG Confirm data in real-time data 1 NG NO *1. Do not communicate for 0.5 seconds since the power-on detection circuit is in operation. *2. Reading the real-time data 1 should be completed within 1 second after setting the real-time data 1. Figure 46 Example of Initialization Flowchart |
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