8 ELECTRICAL CHARACTERISTICS
8.7 Oscillation Characteristics
Oscillation characteristics change depending on conditions (board pattern, components used, etc.). Use the following characteristics as reference values. In particular, when a ceramic or crystal oscillator is used, use the oscillator manufacturer recommended values for constants such as capacitance and resistance.
OSC1 crystal oscillation
(Unless otherwise specified: crystal=Q11C02RX#1 32.768kHz, Rf1=20MΩ | , CG1=CD1=15pF#2) |
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Item | Symbol | Condition |
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| Max. | Unit | ∗ |
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Operating temperature | Ta | VDD=2.7V to 3.6V |
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| 85 | °C |
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| VDD=1.9V to 2.2V |
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| 85 | °C |
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| VDD=1.8V to 2.2V |
| 0 |
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| 70 | °C |
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#1 Q11C02RX: Crystal resonator made by Seiko Epson |
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#2 "CG1=CD1=15pF" includes board capacitance. |
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| (Unless otherwise specified: VDD=3.3V, VSS=0V, crystal=Q11C02RX#1 32.768kHz, |
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| Rf1=20MΩ , CG1=CD1=15pF#2, Ta=25°C) |
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Item | Symbol | Condition |
| Min. | Typ. |
| Max. | Unit | ∗ |
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Oscillation start time | tSTA1 |
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| 3 | s |
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External gate/drain capacitance | CG1, CD1 | CG1=CD1, |
| 5 |
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| 25 | pF |
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| including board capacitance |
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Frequency/IC deviation | ∆ f/∆ IC |
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| 10 | ppm |
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Frequency/power voltage deviation | ∆ f/∆ V |
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| 10 | ppm/V |
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Frequency adjustment range | ∆ f/∆ CG | CG1=CD1= 5 to 25pF |
| 50 |
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| ppm |
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#1 Q11C02RX: Crystal resonator made by Seiko Epson |
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#2 "CG1=CD1=15pF" includes board capacitance. |
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| (Unless otherwise specified: VDD=2.0V, VSS=0V, crystal=Q11C02RX#1 32.768kHz, |
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| Rf1=20MΩ , CG1=CD1=15pF#2, Ta=25°C) |
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Item | Symbol | Condition |
| Min. | Typ. |
| Max. | Unit | ∗ |
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Oscillation start time | tSTA1 |
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| 20 | s |
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External gate/drain capacitance | CG1, CD1 | CG1=CD1, |
| 5 |
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| 25 | pF |
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| including board capacitance |
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Frequency/IC deviation | ∆ f/∆ IC |
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| 10 | ppm |
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Frequency/power voltage deviation | ∆ f/∆ V |
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| 10 | ppm/V |
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Frequency adjustment range | ∆ f/∆ CG | CG1=CD1= 5 to 25pF |
| 50 |
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| ppm |
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#1 Q11C02RX: Crystal resonator made by Seiko Epson #2 "CG1=CD1=15pF" includes board capacitance.
OSC3 crystal oscillation
Note: A "crystal resonator that uses a fundamental" should be used for the OSC3 crystal oscillation circuit.
(Unless otherwise specified: VSS=0V, crystal=Q22MA306#1 33.8688MHz, Rf2=1MΩ , CG1=CD1=15pF#2, Ta=25°C)
Item | Symbol | Condition | Min. | Typ. | Max. | Unit | ∗ |
Oscillation start time | tSTA3 | VDD=3.3V |
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| 10 | ms |
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| VDD=2.0V |
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| 25 | ms |
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#1 Q22MA306: Crystal resonator made by Seiko Epson #2 "CG1=CD1=15pF" includes board capacitance.
S1C33L03 PRODUCT PART | EPSON |