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S35392A Datasheet(PDF) 6 Page - Seiko Instruments Inc |
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S35392A Datasheet(HTML) 6 Page - Seiko Instruments Inc |
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6 / 48 page  2-WIRE REAL-TIME CLOCK S-35392A Rev.3.2_02 6 Absolute Maximum Ratings Table 3 Item Symbol Applied Pin Absolute Maximum Rating Unit Power supply voltage VDD − VSS − 0.3 to VSS + 6.5 V Input voltage VIN SCL, SDA VSS − 0.3 to VSS + 6.5 V Output voltage VOUT SDA, 32KO, 2 INT VSS − 0.3 to VSS + 6.5 V Operating ambient temperature *1 Topr − −40 to +85 °C Storage temperature Tstg − −55 to +125 °C *1. Conditions with no condensation or frost. Condensation or frost causes short-circuiting between pins, resulting in a malfunction. Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be exceeded under any conditions. Recommended Operation Conditions Table 4 (VSS = 0 V) Item Symbol Condition Min. Typ. Max. Unit Power supply voltage *1 VDD Ta = −40°C to +85°C 1.3 3.0 5.5 V Time keeping power supply voltage *2 VDDT Ta = −40°C to +85°C VDET − 0.15 − 5.5 V Crystal oscillator CL value CL − − 6 7 pF *1. The power supply voltage that allows communication under the conditions shown in Table 9 of " AC Electrical Characteristics". *2. The power supply voltage that allows time keeping. For the relationship with VDET (low power supply voltage detection voltage), refer to " Characteristics (Typical Data)". Oscillation Characteristics Table 5 (Ta = +25°C, VDD = 3.0 V, VSS = 0 V, VT-200 crystal oscillator (CL = 6 pF, 32.768 kHz) manufactured by Seiko Instruments Inc.) Item Symbol Condition Min. Typ. Max. Unit Oscillation start voltage VSTA Within 10 seconds 1.1 − 5.5 V Oscillation start time tSTA − − − 1 s IC-to-IC frequency deviation *1 δIC − −10 − +10 ppm Frequency voltage deviation δV VDD = 1.3 V to 5.5 V −3 − +3 ppm/V External capacitance Cg Applied to XIN pin − − 9.1 pF Internal oscillation capacitance Cd Applied to XOUT pin − 8 − pF *1. Reference value |
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