Acer Intel Celeron G530 KC.53001.CDG Manual De Usuario

 Processor on 0.13 Micron Process in the 478-Pin Package Datasheet

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The overshoot/undershoot specifications listed in the following tables specify the allowable 
overshoot/undershoot for a single overshoot/undershoot event. However, most systems will have 
multiple overshoot and/or undershoot events, and each has its own set of parameters (duration, AF 
and magnitude). While each overshoot on its own may meet the overshoot specification, when you 
add the total impact of all overshoot events, the system may fail. The following are guidelines to 
ensure that a system passes the overshoot and undershoot specifications: 

1. Ensure no signal ever exceeds VCC or –0.25 V 

– OR –

2. If only one overshoot/undershoot event magnitude occurs, ensure it meets the over/undershoot 

specifications in the following tables 
– OR –

3. If multiple overshoots and/or multiple undershoots occur, measure the worst case pulse 

duration for each magnitude and compare the results against the AF = 1 specifications. If all of 
these worst case overshoot or undershoot events meet the specifications 
(measured time < specifications) in the table (where AF=1), then the system passes.

The following notes apply to 

 through 

.

1. Absolute Maximum Overshoot magnitude of 1.80 V must never be exceeded.

2. Absolute Maximum Overshoot is measured relative to VSS, and Pulse Duration of overshoot 

is measured relative to VCC.

3. Absolute Maximum Undershoot and Pulse Duration of undershoot is measured relative to 

VSS.

4. Ringback below VCC can not be subtracted from overshoots/undershoots.

Lesser undershoot does not allocate longer or larger overshoot.

5. OEMs are strongly encouraged to follow the Intel provided layout guidelines.

6. All values are specified by design characterization.

1.

These specifications are measured at the processor core silicon.

2.

BCLK period is 10 ns.

1.800

–0.310

0.01

0.15

1.59

1.750

–0.260

0.01

0.43

4.59

1.700

–0.210

0.02

1.22

5.00

1.650

–0.160

0.05

3.56

5.00

1.600

–0.110

0.14

5.00

5.00

1.550

–0.06

0.63

5.00

5.00