Datasheet 277

Electrical Characteristics

11 Electrical Characteristics

This chapter contains the DC specifications for the MCH.

11.1 Absolute Minimum and Maximum Ratings

Table 23 specifies the MCH absolute maximum and minimum ratings. Within functional

operation limits, functionality and long-term reliability can be expected.

At conditions outside functional operation condition limits, but within absolute

maximum and minimum ratings, neither functionality nor long-term reliability can be

expected. If a device is returned to conditions within functional operation limits after

having been subjected to conditions outside these limits, but within the absolute

maximum and minimum ratings, the device may be functional, but with its lifetime

degraded depending on exposure to conditions exceeding the functional operation

condition limits.

At conditions exceeding absolute maximum and minimum ratings, neither functionality

nor long-term reliability can be expected. Moreover, if a device is subjected to these

conditions for any length of time its reliability will be severely degraded or not function

when returned to conditions within the functional operating condition limits.

Although the MCH contains protective circuitry to resist damage from static electric

discharge, precautions should always be taken to avoid high static voltages or electric

fields.

Table 23. Absolute Minimum and Maximum Ratings

Symbol Parameter Min Max Unit Notes

storage

Storage Temperature -55 150 °C1

MCH Core

VCC

1.25 V Core Supply Voltage with respect to

VSS

-0.3 1.375 V

Host Interface (800/1066/1333 MHz)

VTT_FSB

System Bus Input Voltage with respect to

VSS

-0.3 1.32 V

VCCA_HPLL

1.25 V Host PLL Analog Supply Voltage with

respect to VSS

-0.3 1.375 V

System Memory Interface (DDR2 667/800 MHz, DDR3 800/1066/1333 MHz)

VCC_DDR

1.8 V DDR2 / 1.5 V DDR3 System Memory

Supply Voltage with respect to VSS

-0.3 4.0 V

VCC_CKDDR

1.8 V DDR2 / 1.5 V DDR3 Clock System

Memory Supply Voltage with respect to VSS

-0.3 4.0 V

VCCA_MPLL

1.25 V System Memory PLL Analog Supply

Voltage with respect to VSS

-0.3 1.375 V

Electrical Characteristics

278 Datasheet

NOTE:

1. Possible damage to the MCH may occur if the MCH temperature exceeds 150 °C. Intel does

not ensure functionality for parts that have exceeded temperatures above 150 °C due to

specification violation.

PCI Express* / DMI Interface

VCC_EXP

1.25 V PCI Express* and DMI Supply

Voltage with respect to VSS

-0.3 1.375 V

VCCA_EXP

3.3 V PCI Express* Analog Supply Voltage

with respect to VSS

-0.3 3.63 V

VCCAPLL_EXP

1.25 V Primary PCI Express* PLL Analog

Supply Voltage with respect to VSS

-0.3 1.375 V

VCCAPLL_EXP2

1.25 V Secondary PCI Express* PLL Analog

Supply Voltage with respect to VSS

-0.3 1.375 V

Controller Link Interface

VCC_CL 1.25 V Supply Voltage with respect to VSS -0.3 1.375 V

CMOS Interface

VCC3_3

3.3 V CMOS Supply Voltage with respect to

VSS

-0.3 3.63 V

Table 23. Absolute Minimum and Maximum Ratings

Symbol Parameter Min Max Unit Notes

Datasheet 279

Electrical Characteristics

11.2 Current Consumption

Table 24 shows the current consumption for the MCH in the Advanced Configuration

and Power Interface (ACPI) S0 state. Icc max values are determined on a per-interface

basis, at the highest frequencies for each interface. Sustained current values or Max

current values cannot occur simultaneously on all interfaces. Sustained Values are

measured sustained RMS maximum current consumption and includes leakage

estimates. The measurements are made with fast silicon at 96° C Tcase temperature,

at the Max voltage listed in Table 26. The Max values are maximum theoretical pre-

silicon calculated values. In some cases, the Sustained measured values have exceeded

the Max theoretical values.

NOTES:

1. Measurements are for current coming through chipset’s supply pins.

2. Rail includes DLLs (and FSB sense amps on VCC).

3. Sustained Measurements are combined because one voltage regulator on the platform

supplies both rails on the MCH.

Table 24. Current Consumption in S0

Symbol Parameter Signal Names Sustained Max Unit Notes

VCC

1.25 V Core Supply Current (Discrete

Gfx)

VCC 6.06 7.27 A 1,2

VCC_DDR2

DDR2 System Memory Interface

(1.8 V) Supply Current

VCC_DDR 2.06 2.57 A

1, 2, 3

VCC_CKDDR2

DDR2 System Memory Clock Interface

(1.8 V) Supply Current

VCC_CKDDR 521 581 mA

VCC_DDR3

DDR3 System Memory Interface

(1.5 V) Supply Current

VCC_DDR 1.53 1.61 A

1, 2, 3

VCC_CKDDR3

DDR3 System Memory Clock Interface

(1.5 V) Supply Current

VCC_CKDDR 334 367 mA

VCC_EXP

1.25 V PCI Express* and DMI Supply

Current

VCC_EXP 5.12 6.65 A 2

VCC_CL

1.25 V Controller Supply Current VCC_CL 2.20 2.80 A 2

VTT_FSB

System Bus Supply Current VTT_FSB 387 580 mA 1

VCCA_EXP

3.3 V PCI Express* and DMI Analog

Supply Current

VCCA_EXP 167 175 mA

IVCC3_3 3.3 V CMOS Supply Current VCC3_3 0.5 16 mA

VCCAPLL_EXP

1.25 V PCI Express* and DMI PLL

Analog Supply Current

VCCAPLL_EXP 48 53 mA

VCCA_HPLL

1.25 V Host PLL Supply Current VCCA_HPLL 18 26 mA

VCCA_MPLL

1.25 V System Memory PLL Analog

Supply Current

VCCA_MPLL 97 146 mA

Part #	31761
Description
Category	RELAY
Availability	In Stock
Qty	1

31761

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