Datasheet

Datasheet 21
Electrical Specifications
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 Celeron D 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 and
775_VR_CONFIG_06 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 102030405060708090100
Icc [A]
Vcc [V]
Vcc Maximum
Vcc Typical
Vcc Minimum
Table 6. Vcc Overshoot Specifications
Symbol Parameter Min Max Unit Figure Notes
V
OS_MAX
Magnitude of V
CC
overshoot above VID — 0.050 V 2
1
NOTES:
1. Adherence to these specifications for the Celeron D processor is required to ensure reliable
processor operation.
T
OS_MAX
Time duration of V
CC
overshoot above VID — 25 μs 2
1