S-35190A-T8T1G Seiko Instruments, S-35190A-T8T1G Datasheet - Page 34

• Manufacturer Part Number: S-35190A-T8T1G
• Description: IC REAL TIME CLOCK 3WIRE 8-TSSOP
• Manufacturer: Seiko Instruments
• Type: Clock/Calendarr

Specifications of S-35190A-T8T1G

• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: 3-Wire Serial
• Voltage - Supply: 1.3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Function: Clock/Calendar/Alarm/Battery Backup/Interrupt
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 1.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial (3-Wire)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

34
3-WIRE REAL-TIME CLOCK
S-35190A
Flowchart of Initialization at Power-on and Example of Real-time Data Set-up
Figure 41 shows the flowchart of initialization at power-on and an example of real-time data set-up. Regarding how to apply
power, refer to “
flowchart of real-time data strictly. And if using the default data at initializing, it is also unnecessary to set up again.
Power-on Detection Circuit and Register Status” . It is unnecessary for users to comply with this
NG
display to status register 1
(status register 1 B7 = 1)
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
Figure 41 Example of Initialization Flowchart
YES
YES
YES
YES
Wait for 0.5 s
Power-on
POC = 1
TEST = 0
POC = 0
Initialize
register 1
BLD = 0
START
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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