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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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7220 데이터시트(PDF) 127 Page - Renesas Technology Corp |
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7220 데이터시트(HTML) 127 Page - Renesas Technology Corp |
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127 / 303 page  2-100 7220 Group User’s Manual FUNCTIONAL DESCRIPTION 2.16 Clock generating circuit Fig. 2.16.1 Clock generating circuit block diagram 2.16 Clock generating circuit Oscillation circuit consists of an “oscillation gate” which operates as an amplifier to provide the gain required for oscillation and an “oscillating control flip-flop” to control this. Because of that, it is possible to start and stop oscillating as required. For details concerning start and stop of oscillation, refer to “2.14 Low-power dissipation mode.” Figure 2.16.1 shows the clock generating circuit block diagram. Interrupt request Interrupt disable flag I Reset SQ R STP instruction SQ R WIT instruction S Q R STP instruction Reset Internal clock φ 1/2 1/8 Timer 3 Timer 4 XOUT XIN T34M0 T34M2 Selection gate : Connected to black side at reset. . T34M : Timer 34 mode register |
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