Electrical Characteristics
R
Intel
®
82925X/82925XE MCH Datasheet 185
11 Electrical Characteristics
This chapter contains the MCH absolute maximum electrical ratings, power dissipation values,
and DC characteristics.
11.1 Absolute Maximum Ratings
Table 11-1 lists the MCH’s maximum environmental stress ratings. Functional operation at the
absolute maximum and minimum is neither implied nor guaranteed. Functional operating
parameters are listed in the DC tables.
Warning: Stressing the device beyond the “Absolute Maximum Ratings” may cause permanent damage.
These are stress ratings only. Operating beyond the “operating conditions” is not recommended
and extended exposure beyond “operating conditions” may affect reliability.
Table 11-1. Absolute Maximum Ratings
Symbol Parameter Min Max Unit Notes
T
storage
Storage Temperature –55 150 °C 1
MCH Core
VCC 1.5 V Core Supply Voltage with respect to V
SS
–0.3 1.65 V
Host Interface (800 MHz)
VTT 1.2 V System Bus Input Voltage with respect to V
SS
–0.3 1.65 V
VCCA_HPLL 1.5 V Host PLL Analog Supply Voltage with respect
to V
SS
–0.3 1.65 V
DDR2 Interface (400 MHz / 533 MHz)
VCCSM
(DDR2)
1.8 V DDR2 System Memory Supply Voltage with
Respect to V
SS
–0.3 4.0 V
VCCA_SMPLL
(DDR2)
1.5 V System Memory PLL Analog Supply Voltage
with respect to V
SS
–0.3 1.65 V
PCI Express* / DMI Interface
VCC_EXP 1.5 V PCI Express* and DMI Supply Voltage with
respect to V
SS
–0.3 1.65 V
VCCA_EXPPL
L
1.5 V PCI Express PLL Analog Supply Voltage with
respect to V
SS
–0.3 1.65 V
CMOS Interface
VCC2 2.5 V CMOS Supply Voltage with respect to V
SS
–0.3 2.65 V
NOTES:
1. Possible damage to the MCH may occur if the MCH temperature exceeds 150 °C. Intel does not
guarantee functionality for parts that have exceeded temperatures above 150 °C due to specification
violation.
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