Intel Pentium D 945 HH80553PG0964MN User Manual
Product codes
HH80553PG0964MN
Electrical Specifications
24
Datasheet
NOTES:
1.
1.
The loadline specification includes both static and transient limits except for overshoot
allowed as shown in
allowed as shown in
.
2.
This loadline specification shows the deviation from the VID set point.
3.
The loadlines specify voltage limits at the die measured at the VCC_SENSE and
VSS_SENSE lands. Voltage regulation feedback for voltage regulator circuits must be taken
from processor VCC and VSS lands. Refer to the Voltage Regulator-Down (VRD) 10.1
Design Guide For Desktop and Transportable LGA775 Socket for socket loadline guidelines
and VR implementation details.
VSS_SENSE lands. Voltage regulation feedback for voltage regulator circuits must be taken
from processor VCC and VSS lands. Refer to the Voltage Regulator-Down (VRD) 10.1
Design Guide For Desktop and Transportable LGA775 Socket for socket loadline guidelines
and VR implementation details.
2.5.3
V
CC
Overshoot
The processor can tolerate short transient overshoot events where V
CC
exceeds the VID
voltage when transitioning from a high to low current load condition. This overshoot
cannot exceed VID + V
OS_MAX
(V
OS_MAX
is the maximum allowable overshoot voltage).
The time duration of the overshoot event must not exceed T
OS_MAX
(T
OS_MAX
is the
maximum allowable time duration above VID). These specifications apply to the
processor die voltage as measured across the VCC_SENSE and VSS_SENSE lands.
Figure 1.
V
CC
Static and Transient Tolerance for 775_VR_CONFIG_05A (Mainstream)
and 775_VR_CONFIG_05B (Performance) Processors
VID - 0.000
VID - 0.019
VID - 0.038
VID - 0.057
VID - 0.076
VID - 0.095
VID - 0.114
VID - 0.133
VID - 0.152
VID - 0.171
VID - 0.190
VID - 0.209
VID - 0.228
0
10
20
30
40
50
60
70
80
90
100
110
120
Icc [A]
Vcc
[
V
]
Vcc Maximum
Vcc Typical
Vcc Minimum
Table 6.
V
CC
Overshoot Specifications
1,2
Symbol
Parameter
Min
Max
Unit
Figure Note
1,2
NOTES:
1. Adherence to these specifications for the processor is required to ensure reliable processor operation.
2.
Consult the
Voltage Regulator-Down (VRD) 10.1 Design Guide For Desktop and Transportable LGA775 Socket
for proper application of the overshoot specification.
V
OS_MAX
Magnitude of V
CC
overshoot above VID
—
0.050
V
T
OS_MAX
Time duration of V
CC
overshoot above
VID
—
25
μs