S-35390A-I8T1G Seiko Instruments, S-35390A-I8T1G Datasheet - Page 36

• Manufacturer Part Number: S-35390A-I8T1G
• Description: IC REAL TIME CLOCK 2WIRE SNT-8A
• Manufacturer: Seiko Instruments
• Type: Clock/Calendarr

Specifications of S-35390A-I8T1G

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SNT-8A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Other names: 728-1059-2; S-35390A-I8T1G

36
2-WIRE REAL-TIME CLOCK
S-35390A
Flowchart of Initialization at Power-on and Example of Real-time Data Set-up
Figure 46 shows the flowchart of initialization at power-on and an example of real-time data set-up. Regarding how to
apply power, refer to “
this flowchart of real-time data strictly. And if using the default data at initializing, it is also unnecessary to set up again.
NG
display to status register 1
(status register 1 B7 = 1)
Power-on Detection Circuit and Register Status”. It is unnecessary for users to comply with
Read status register 1
Read status register 1
Read status register 1
Read status register 2
Read real-time data 1
Set 24-hour/12-hour
Confirm data in status
Set real-time data 1
OK
YES
YES
YES
Wait for 0.5 s
YES
Power-on
TEST = 0
POC = 1
POC = 0
Initialize
register 1
BLD = 0
START
Figure 46 Example of Initialization Flowchart
END
Seiko Instruments Inc.
NO
NO
NO
NO
Initialization after power-on
Example of real-time data setting
Rev.3.0
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