Intel BK80524P533128 Datový list stáhnout pdf (Strana 63)

Datasheet 63

Intel

Celeron

Processor up to 1.10 GHz

NOTES:

1. PICCLK period is 30 ns.

2. Measurements taken at the processor socket pins on the solder-side of the motherboard.

Table 39. 33 MHz CMOS Signal Group Overshoot/Undershoot Tolerance at Processor Pins

(FC-PGA/FC-PGA2 Packages)

Overshoot/

Undershoot

Magnitude

Maximum Pulse Duration at Tj = 80 °C

(ns)

Maximum Pulse Duration at Tj = 90 °C

(ns)

AF = 0.01 AF = 0.1 AF = 1 AF = 0.01 AF = 0.1 AF = 1

2.18 V 60 7.6 0.76 36 3.6 0.36

2.13 V 60 14.8 1.48 60 6.4 0.64

2.08 V 60 27.2 2.7 60 12.8 1.2

2.03 V 60 50 5 60 24 2.2

1.98 V 60 60 9.1 60 44 4

1.93 V 60 60 16.4 60 60 7.6

1.88 V 60 60 30 60 60 13.6

Figure 15. Maximum Acceptable AGTL+ Overshoot/Undershoot Waveform

(FC-PGA/FC-PGA2 Packages)

Vss

Undershoot

Magnitude

= V

- Signal

Overshoot

Magnitude

= Signal - Vss

2.18V

2.08V

1.98V

1.88V

1.635V

Max

Overshoot

Magnitude

Time Dependent

Overshoot

Converted Undershoot

Waveform

Undershoot

Magnitude

Time Dependent

Undershoot

1 2 ... 58 59 60 61 62 63 64 65 66 67 68 ... 127 128

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