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| 型号： | B80547RE061256 |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 2530 MHz, MICROPROCESSOR, PBGA775 |
| 封装： | FLIP CHIP, LGA-775 |
| 文件页数： | 76/94页 |
| 文件大小： | 2796K |
| 代理商： | B80547RE061256 |
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78
Datasheet
Thermal Specifications and Design Considerations
5.2.7
Thermal Diode
The processor incorporates an on-die thermal diode. A thermal sensor located on the system board
may monitor the die temperature of the processor for thermal management/long term die
specifications. This thermal diode is separate from the Thermal Monitor’s thermal sensor and
cannot be used to predict the behavior of the Thermal Monitor.
§
Table 5-3. Thermal Diode Parameters
Symbol
Parameter
Min
Typ
Max
Unit
Notes
IFW
Forward Bias Current
11
—
187
A
1
NOTES:
1.
Intel does not support or recommend operation of the thermal diode under reverse bias.
n
Diode Ideality Factor
1.0083
1.011
1.023
—
2, 3, 4, 5
2.
Characterized at 75 °C.
3.
Not 100% tested. Specified by design characterization.
4.
The ideality factor, n, represents the deviation from ideal diode behavior as exemplified by the diode equation:
IFW = IS * (e
qVD/nkT –1)
where IS = saturation current, q = electronic charge, VD = voltage across the diode, k = Boltzmann Constant, and
T = absolute temperature (Kelvin).
5.
Devices found to have an ideality factor in the range of +3 n to +5 n will create a temperature error approximately 2° C higher
than the actual temperature. To minimize any potential acoustic impact of this temperature error, TCONTROL will be increased
by 2° C on these parts. Processors with an ideality between ±3 n will not be affected.
RT
Series Resistance
3.242
3.33
3.594
Ω
2, 3, 6
6.
The series resistance, RT, is provided to allow for a more accurate measurement of the diode temperature. RT, as defined,
includes the lands of the processor but does not include any socket resistance or board trace resistance between the socket
and the external remote diode thermal sensor. RT can be used by remote diode thermal sensors with automatic series re-
sistance cancellation to calibrate out this error term. Another application is that a temperature offset can be manually calcu-
lated and programmed into an offset register in the remote diode thermal sensors as exemplified by the equation:
Terror = [RT * (N-1) * IFWmin] / [nk/q * ln N]
where Terror = sensor temperature error, N = sensor current ratio, k = Boltzmann Constant, q = electronic charge.
Table 5-4. Thermal Diode Interface
Signal Name
Land Number
Signal Description
THERMDA
AL1
diode anode
THERMDC
AK1
diode cathode
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