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Datasheet

Electrical Specifications

11.

These specifications are different depending on whether the platform is forward compatible to the Celeron D pro-

cessor or if it is optimized for the Celeron D processor. A compatible platform is one that is designed for a previous

generation processor but has some level of compatibility with the Celeron D processor. An optimized platform is one

designed specifically for the Celeron D processor; however, it may have some level of compatibility with previous

generation processors.

Table 2-12. PWRGOOD and TAP Signal Group DC Specifications

Symbol

Parameter

Min

Max

Unit

Notes1,2

NOTES:

Unless otherwise noted, all specifications in this table apply to all processor frequencies.

All outputs are open drain.

VHYS

Input Hysteresis

200

350

VHYS represents the amount of hysteresis, nominally centered about 0.5 * VCC for all TAP inputs.

VT+

Input low to high threshold

voltage

0.5 * (VCC + VHYS_MIN)0.5 * (VCC + VHYS_MAX)V

The VCC referred to in these specifications refers to instantaneous VCC.

VT-

Input high to low threshold

voltage

0.5 * (VCC – VHYS_MAX)0.5 * (VCC – VHYS_MIN)V

VOH

Output High Voltage

N/A

VCC

IOL

Output Low Current

—

The maximum output current is based on maximum current handling capability of the buffer and is not specified into

the test load.

ILI

Input Leakage Current

—

± 200

µA

Leakage to VSS with pin held at VCC.

ILO

Output Leakage Current

—

± 200

µA

Leakage to VCC with Pin held at 300 mV.

Ron

Buffer On Resistance

Ω

These values work for compatible and optimized platforms. A compatible platform is one that is designed for a pre-

vious generation processor but has some level of compatibility with the Celeron D processor. An optimized platform

is one designed specifically for the Celeron D processor; however, it may have some level of compatibility with pre-

vious generation processors.

Table 2-13. VCCVID DC Specifications

Symbol

Parameter

Min

Typ

Max

Unit

Notes

VCCVID

Voltage

1.14

1.2

1.26

VCCVIDLB

Voltage

1.14

1.2

1.26

Table 2-14. VIDPWRGD DC Specifications

Symbol

Parameter

Min

Typ

Max

Unit

Notes

VIL

Input Low Voltage

—

0.3

VIH

Input High Voltage

0.9

—

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