Electronic Components
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Real-Time Clock (RTC)
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SII provides three key parts for Real-Time Clock (RTC) function. RTC IC, Tuning Fork Quartz Crystal, and Backup Battery. SII's One-Stop Solution for RTC function gives high persistence and stable oscillation to a wide range of products including compact mobile devices.
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We can help save your TAT (turnaround time) for RTC circuit designing and purchasing.
That is the One-Stop Solution for RTC function by SII.
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Model No.
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Type
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Features
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Operating Voltage
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Current Consumption
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Package
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S-35390A
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2-wire
(I
2
C-bus)
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Super-low 0.25 µA current consumption
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1.1 to 5.5 V
(time keeping operation voltage)
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0.25µA
(3.0V)
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8-Pin SOP, 8-Pin TSSOP
SNT-8A
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S-35392A
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Constant 32kHz output
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0.45µA
(3.0V)
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SNT-8A
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S-35399A02
New
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24-bit counter,
Alarm settable to day/manth/year,
Constant 32kHz output
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0.34µA
(3.0V)
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WLP-12A
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S-35399A03
New
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24-bit counter,
Alarm settable to day/manth/year
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0.34µA
(3.0V)
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8-Pin SOP
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S-78390A Series
Under Development
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Switch Input Detection Function
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0.35µA
(3.0V)
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16-Pin SOP, 16-Pin TSSOP
WLP-16A
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S-35190A
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3-wire
(micro wire)
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Super-low 0.25 µA current consumption
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0.25µA
(3.0V)
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8-Pin TSSOP, SNT-8A
8-Pin SOP
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S-35192A
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Constant 32kHz output
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0.45µA
(3.0V)
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SNT-8A
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S-35199A01
New
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24-bit counter,
Alarm settable to day/month/year,
Constant 32kHz output
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0.34µA
(3.0V)
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WLP-12A
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S-78190A Series
New
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Switch Input Detection Function
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0.35µA
(3.0V)
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16-Pin SOP, 16-Pin TSSOP
WLP-16A
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Type
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Frequency Tolerance
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Turnover Tempe-rature
(°C)
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Parabolic Coefficient
(/°C
2
)
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Load
Capaci-tance
(pF)
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Motional Resista-
nce(ESR)
typ./max.
(kΩ)
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Maxim-
um
Drive
Level
(µW)
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Shunt Capaci-tance
(pF typ.)
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Frequency Ageing
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Operating Temperature
(°C)
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Dimensions
(mm) (max.)
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Width (Dia-meter)
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Dep-th
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Hei-ght
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VT-200-F
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(±5x10
-6
)
±10x10
-6
±20x10
-6
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+25±5
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(-3.5±0.8)x10
-8
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4.5
to
12.5
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30/50
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1
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0.9
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±5x10
-6
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-10 to +60
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ø2.0
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-
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6.0
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SSP-T7-F
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±20x10
-6
±50x10
-6
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+25±5
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(-3.5±1.0)x10
-8
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7.0
/12.5
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44/65
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1
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0.8
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±3x10
-6
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-40 to +85
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7.0
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1.5
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1.4
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Type
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Nominal Voltage (V)
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Standard Charge Voltage(V)
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Nominal Capacity (mAh)
*1
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Internal Impedance (Ω)
*2
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Standard Charge/Discharge Current (mA)
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Maximum Discharge Current (continuous)
*3
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Cycle life(Times)
*4
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Dimensions(mm)
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Weight(g)
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100 % D.O.D(Depth of Discharge)
*5
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20 % D.O.D(Depth of Discharge)
*5
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Diameter
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Height
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MS412FE
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3
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3.1
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1.0
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100
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0.010
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0.10
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100
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1000
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4.8
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1.2
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0.07
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MS518SE
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3
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3.1
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3.4
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60
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0.010
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0.15
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100
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1000
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5.8
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1.8
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0.13
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MS614SE
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3
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3.1
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3.4
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80
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0.015
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0.25
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100
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1000
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6.8
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1.4
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0.17
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MS621FE
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3
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3.1
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5.5
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80
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0.015
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0.25
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100
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1000
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6.8
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2.1
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0.23
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MS920SE
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3
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3.1
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11.0
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35
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0.050
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0.80
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100
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1000
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9.5
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2.1
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0.47
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*1. Nominal capacity indicates typical value of capacity whose voltage range is 3.3V to 2.0V,/ F type and S type 3.1V to 2.0V. *2. Internal impedance is measured using AC (Alternating Current) method at the fully charged state. *3. Maximum discharge current indicates the value of current for approximately 50% of nominal capacity. *4. Cycle life times indicates the times of charge-discharge repeating for approximately 50% of the capacity value in the spec sheet. *5 100% and 20% are based on nominal capacity.
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