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W83781D Datasheet(PDF) 52 Page - Winbond |
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W83781D Datasheet(HTML) 52 Page - Winbond |
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52 / 54 page  W83781D/W83781G Publication Release Date: April 14, 2005 - 48 - Revision 2.0 0.6 APPLICATION OF W83781D WINBOND ELECTRONICS CORP. B 22 Wednesday, February 24, 1999 Title Size Document Number Rev Date: Sheet of +12V +12V VCC 5VSB BAT These two inveters consume CaseOpen Switch Q Q' open 1 0 close 0 1 open open 01 10 normal state after reset ps. 'Switch Open' means 'Case Close' Q Q' FanBlock CaseBlock VRTC VRTC On-board RTC Power Switch Circuit if W83781D does not reset (let Q=0), then stable SpeakerBlock R19 4.7K R20 10K R21 2.2M S1 CASEOPEN SW U2A 74HC14 1 2 U2B 74HC14 3 4 C17 1000pF 10% 50V R22 4.7K JP1 HEADER 3 CPU FAN Connecter 1 2 3 JP2 HEADER 3 MB FAN Connecter 1 2 3 D1 DIODE D2 DIODE C18 10uF Q1 NPN R23 4.7K LS1 SPEAKER R24 100 R27 R 10K R29 R 10K R26 R 20-27K D3 DIODE R28 R 20-27K D4 DIODE FAN2IN FAN1IN FAN1OUT CASEOPEN BEEP/GPO# |
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