Intel X3330 AT80580KJ0676M Data Sheet

85

NOTES:
1.

Intel does not support or recommend operation of the thermal diode under reverse bias.

2.

Same as I

FW 

.

3.

Preliminary data. Will be characterized across a temperature range of 50–80 °C.

4.

Not 100% tested. Specified by design characterization.

5.

The ideality factor, nQ, represents the deviation from ideal transistor model behavior as 
exemplified by the equation for the collector current:

I

C

 = I

S

 * (e 

qV

BE

/n

Q

kT

 –1)

Where I

S

 = saturation current, q = electronic charge, V

BE

 = voltage across the transistor 

base emitter junction (same nodes as VD), k = Boltzmann Constant, and T = absolute 

temperature (Kelvin).

6.

The series resistance, R

T,

 provided in the Diode Model Table (

) can be used for 

more accurate readings as needed. 

The Intel Core2 Extreme processor X6800 and Intel Core2 Duo desktop processor 

E6000 and E4000 sequences do not support the diode correction offset that exists on 

other Intel processors.

PECI offers an interface for thermal monitoring of Intel processor and chipset 
components. It uses a single wire, thus alleviating routing congestion issues. 

 shows an example of the PECI topology in a system. PECI uses CRC 

checking on the host side to ensure reliable transfers between the host and client 
devices. Also, data transfer speeds across the PECI interface are negotiable within a 
wide range (2 Kbps to 2 Mbps). The PECI interface on the processor is disabled by 
default and must be enabled through BIOS. More information on this can be found in 
the Conroe BIOS Writer’s Guide.

I

FW

Forward Bias Current

5

—

200

µA

1, 2

I

E

Emitter Current

5

—

200

n

Q

Transistor Ideality

0.997

1.001

1.005

-

3, 4, 5

Beta

0.391

—

0.760

3, 4

R

T

Series Resistance

2.79

4.52

6.24

Ω

3, 6

THERMDA

AL1

diode anode

THERMDC

AK1

diode cathode