Ultra-Low Voltage Intel® Celeron® Processor — 650 MHz and 400 MHz
Figure 20. Maximum Acceptable Overshoot/Undershoot Waveform
Time Dependant Overshoot
Max
Vss
Min
Time Dependant Undershoot
Table 33. 100-MHz AGTL Signal Group Overshoot/Undershoot Tolerance
at the Processor Core
Max VCCT + Overshoot/
Allowed Pulse Duration (ns) [Tj=100C (see Note 7)]
Undershoot Magnitude (volts)
Activity Factor =
0.01
Activity Factor =
0.1
Activity Factor = 1
1.78
1.73
1.68
1.63
1.58
1.53
1.48
1.6
4.5
9.5
20
0.16
0.45
0.95
2.0
0.016
0.045
0.095
0.2
20
4.2
0.42
0.85
1.9
20
8.5
20
19
NOTES:
1. Under no circumstances should the sum of the Max VCCT and absolute value of the Overshoot/Undershoot
voltage exceed 1.78 V.
2. Activity factor of 1 represents the same toggle rate as the 100-MHz clock.
3. Ringbacks below VCCT cannot be subtracted from overshoots. Lesser undershoot does not allocate longer
or larger overshoot.
4. Ringbacks above ground cannot be subtracted from undershoots. Lesser overshoot does not allocate
longer or larger undershoot.
5. System designers are encouraged to follow Intel provided AGTL layout guidelines.
6. All values are specified by design characterization and are not tested.
7. Tj = 85° C for 1.33 GHz.
Datasheet
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INTEL [ INTEL ]
