EMC1053 Standard Microsystems Corp., EMC1053 Datasheet - Page 23

• Manufacturer Part Number: EMC1053
• Description: 1 Degree C Triple Temperature Sensor With Resistance Error Correction & Hotter Of Two Zones
• Manufacturer: Standard Microsystems Corp.

1°C Triple Temperature Sensor with Resistance Error Correction & Hotter of Two Zones
Datasheet
APPLICATION NOTE: When measuring a 65nm Intel CPUs, the Ideality Setting should be the default 12h. When
SMSC EMC1053
4.8
29h
2Ah
010001
010010
010011
010100
010101
010110
010111
0
0
0
0
1
1
ADDR
SETTING
2
Diode 1 Beta
Configuration
Diode 2 Beta
Configuration
REGISTER
By default, the beta compensation circuitry is disabled and the EMC1053 is configured to measure
discrete diode-connected transistors. Writing to the Beta Configuration Registers will enable the beta
compensation circuitry and should be used if measuring a CPU substrate diode.
The beta compensation circuit is able to compensate for beta variation within a given range. The beta
configuration register is configured to the proper range to match the CPU to be monitored. The beta
values should be set so that the minimum expected beta is not below the threshold indicated in
Table
Beta Configuration Registers (29h - 2Ah)
Table 4.9 Substrate Diode Ideality Factor Look-Up Table (BJT Model) (continued)
4.11. Beta compensation is activated if the BETA<2:0> bits are set to any value other than 07h.
0
0
1
1
0
0
measuring 45nm Intel CPUs, the Ideality Setting should be 15h.
FACTOR
0.9986
1.0000
1.0013
1.0026
1.0039
1.0053
1.0066
BETA<2:0>
-
-
B7
1
Table 4.11 Beta Configuration Look Up Table
Table 4.10 Beta Configuration Registers
-
-
B6
100001
100010
100011
100100
100101
100110
100111
SETTING
0
1
0
1
0
1
-
-
DATASHEET
B5
0
-
-
23
B4
FACTOR
1.0200
1.0213
1.0226
1.0239
1.0252
1.0265
1.0278
-
-
B3
0.11
0.18
0.25
0.33
0.43
1.00
BETA<2:0>
BETA<2:0>
B2
110001
SETTING
MINIMUM BETA
B1
Revision 1.44 (04-14-08)
B0
FACTOR
1.0408
DEFAULT
07h
07h