emc1428 Standard Microsystems Corp., emc1428 Datasheet - Page 39

• Manufacturer Part Number: emc1428
• Description: 1 Degree C Multiple Temperature Sensor With Hw Thermal Shutdown
• Manufacturer: Standard Microsystems Corp.

1°C Multiple Temperature Sensor with HW Thermal Shutdown & Hottest of Thermal Zones
Datasheet
SMSC EMC1428
5.15
ADDR.
25h
26h
71h
72h
2
0
0
0
1
Beta Configuration Register
R/W
R/W
R/W
R/W
These registers are used to set the Beta Compensation factor that is used for the External Diode
channels.
Bit 3 - AUTOx - Enables the Beta Compensation factor autodetection function.
Bit 2-0 - BETAx[2:0] - These bits always reflect the current beta configuration settings. These bits will
be updated automatically and writing to these bits will have no effect.
R
‘0’ - The Beta Compensation Factor autodetection circuitry is disabled. The External Diode will
always use the Beta Compensation factor set by the BETAx[2:0] bits.
‘1’ (default) - The Beta Compensation factor autodetection circuitry is enabled. At the beginning of
every conversion, the optimal Beta Compensation factor setting will be determined and applied.
The BETAx[2:0] bits will be automatically updated to indicate the current setting.
All Others
Diode 1 Beta
Configuration
Diode 2 Beta
Configuration
Diode 4 Beta
Configuration
Diode 6 Beta
Configuration
REGISTER
External
External
External
External
1
0
0
1
1
Table 5.19 Beta Configuration Register
Table 5.18 Consecutive Alert Settings
B7
-
-
-
-
0
0
1
1
1
B6
-
-
-
-
DATASHEET
B5
-
-
-
-
39
NUMBER OF CONSECUTIVE OUT OF LIMIT
B4
-
-
-
-
AUTO1
AUTO2
AUTO4
AUTO6
4 (default for CTHRM[2:0])
1 (default for CALRT[2:0])
B3
MEASUREMENTS
4 (CTHRM[2:0])
1 (CALRT[2:0]),
B2
2
3
BETA1[2:0]
BETA2[2:0]
BETA4[2:0]
BETA6[2:0]
B1
Revision 0.68 (07-08-08)
B0
DEFAULT
08h
08h
08h
07h