Datasheet

Electrical Specifications
24 Datasheet
NOTES:
1. The loadline specification includes both static and transient limits except for overshoot
allowed as shown in Section 2.5.3.
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.
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 102030405060708090100110120
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 2
T
OS_MAX
Time duration of V
CC
overshoot above
VID
—25μs 2