Renesas PCA7750G02 사용자 설명서
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(2) When the IC1 (oscillator module) is not used
When not using the IC1, follow the procedure below (see (1) to (5) in Figure 3).
For the capacitor capacity and the resistance value, contact the capacitor distributor.
(1) Install an oscillator at the XTAL1.
(2) Install capacitors at the C2 and C3.
(3) Install resistors at the R1 and R2.
(4) Connect the XIN pin of the S1.
(5) Connect the XOUT pin of the S1.
Figure 3 Connections when not using the C1