GC80503CSM66166SL388 Intel, GC80503CSM66166SL388 Datasheet - Page 59

• Manufacturer Part Number: GC80503CSM66166SL388
• Description: IC MPU 1.9V PENTI 166MHZ 352BGA
• Manufacturer: Intel

Specifications of GC80503CSM66166SL388

• Rohs Status: RoHS non-compliant
• Processor Type: Pentium I w/MMX
• Features: 66MHz Bus
• Speed: 166MHz
• Voltage: 1.9V
• Mounting Type: Surface Mount
• Package / Case: 352-BGA
• Other names: 821225

4.5.3
Datasheet
Figure 23. Maximum Undershoot Level, Undershoot Threshold Level
and Undershoot Threshold Duration
Ringback
Excessive ringback can contribute to long-term reliability degradation of the low-power embedded
Pentium processor with MMX technology, and can cause false signal detection. Ringback is
simulated at the input pin of a component using the input buffer model. Ringback can be simulated
with or without the diodes that are in the input buffer model.
Ringback is the absolute value of the maximum voltage at the receiving pin below V
V
The input diodes are assumed present.
If simulated without the input diodes, follow the Maximum Overshoot/Undershoot specifications.
By meeting the overshoot/undershoot specifications, the signal is guaranteed not to ringback
excessively.
If simulated with the diodes present in the input model, follow the maximum ringback
specification. The maximum ringback specification for inputs to the low-power embedded Pentium
processor with MMX technology is described as follows:
SS
•
•
) relative to the V
Maximum ringback specification: The maximum ringback of inputs associated with their high
states (overshoot) must not drop below V
maximum ringback of inputs associated with their low states (undershoot) must not exceed
0.5 V as shown in Figure 25.
Overshoot (undershoot) is the absolute value of the maximum voltage above V
V
SS
). The guideline assumes the absence of diodes on the input.
Undershoot Threshold Level
Maximum Undershoot Level
Low-Power Embedded Pentium
CC3
(or V
V
SS
, Nominal
SS
) level after the signal has reached its maximum voltage level.
CC3
–1.0 V as shown in Figure 24. Similarly, the
Undershoot
Threshold
Duration
®
Processor with MMX™ Technology
000273
CC
CC3
(below
(or above
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