III PERIPHERAL BLOCK:
Oscillator Types
In the
Figure 6.2 shows the structure of the
CG1 | OSC1 |
| OSC1 |
| |
| VDD |
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| fOSC1 | VSS | fOSC1 | |
Rf | X'tal1 | External |
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clock |
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| OSC2 | Oscillation circuit | N.C. | Oscillation circuit | |
CD1 |
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control signal | OSC2 | control signal | |||
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VSS |
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|
| |
|
| (1) Crystal oscillation circuit |
| (2) External clock input |
OSC1
Low level
OSC2 | Oscillation circuit | |
control signal | ||
|
VSS
(3) When not used
Figure 6.2
When using a crystal oscillation for this circuit, connect a crystal resonator X'tal1 (32.768 kHz, Typ.) and feedback resistor (Rf) between the OSC1 and OSC2 pins, and two capacitors (CG1, CD1) between the OSC1 pin and VSS and the OSC2 pin and VSS, respectively.
When an external clock source is used, leave the OSC2 pin open and input a
The oscillation frequency is 32.768 kHz (Typ.). Use a crystal resonator or external clock that oscillates at this frequency. No other frequency can be used for clock applications.
For details on oscillation characteristics and the external clock input characteristics, refer to "Electrical Characteristics".
EPSON | S1C33L03 FUNCTION PART |