NH82801HEM S LB9B Intel, NH82801HEM S LB9B Datasheet - Page 90
NH82801HEM S LB9B
Manufacturer Part Number
NH82801HEM S LB9B
Description
Manufacturer
Intel
Datasheet
1.NH82801HEM_S_LB9B.pdf
(890 pages)
Specifications of NH82801HEM S LB9B
Lead Free Status / RoHS Status
Compliant
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2.26.2
Figure 3.
90
External RTC Circuitry
To reduce RTC well power consumption, the ICH8 implements an internal oscillator
circuit that is sensitive to step voltage changes in VccRTC.
schematic recommended to ensure correct operation of the ICH8 RTC.
Example External RTC Circuit
NOTE: C1 and C2 depend on crystal load.
VccSus3_3
Vbatt
1 KΩ
+
–
Schottky
(20% tolerance)
Diodes
20 KΩ
1 µF
32.768 kHz
Xtal
1 µF
(20% tolerance)
(5% tolerance)
§ §
15 pF
C1
(5% tolerance)
15 pF
C2
Figure 3
Intel
®
shows an example
10 MΩ
ICH8 Family Datasheet
R1
Signal Description
VCCRTC
RTCX1
RTCX2
RTCRST#
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