1°C Temperature Sensor with Beta Compensation
Datasheet
Reading from the Low Limit Status Register will clear all bits. Reading from the register will also clear
the LOW status bit in the Status Register.
The ALERT pin will be set if the programmed number of consecutive alert counts have been met and
any of these status bits are set.
The status bits will remain set until read unless the ALERT pin is configured as a comparator output
(see Section 5.3.2).
Bit 3 - E3LOW - This bit is set when the External Diode 3 channel drops below its programmed low
limit.
Bit 2 - E2LOW - This bit is set when the External Diode 2 channel drops below its programmed low
limit.
Bit 1 - E1LOW - This bit is set when the External Diode 1 channel drops below its programmed low
limit.
Bit 0 - ILOW - This bit is set when the Internal Diode channel drops below its programmed low limit.
6.17
THERM Limit Status Register
Table 6.22 THERM Limit Status Register
ADDR.
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
THERM
Limit
Status
E3
E2
E1
THERM
37h
R-C
-
-
-
-
ITHERM
00h
THERM THERM
The THERM Limit Status Register contains the status bits that are set when a temperature channel
THERM Limit is exceeded. If any of these bits are set, then the THERM status bit in the Status Register
is set. Reading from the THERM Limit Status Register will not clear the status bits. Once the
temperature drops below the THERM Limit minus the THERM Hysteresis, the corresponding status
bits will be automatically cleared. The THERM bit in the Status Register will be cleared when all
individual channel THERM bits are cleared.
Bit 3 - E3THERM - This bit is set when the External Diode 3 channel exceeds its programmed THERM
Limit. When set, this bit will assert the THERM pin.
Bit 2 - E2THERM - This bit is set when the External Diode 2 channel exceeds its programmed THERM
Limit. When set, this bit will assert the THERM pin.
Bit 1 - E1THERM - This bit is set when the External Diode 1 channel exceeds its programmed THERM
limit. When set, this bit will assert the THERM pin.
Bit 0- ITHERM - This bit is set when the Internal Diode channel exceeds its programmed THERM limit.
When set, this bit will assert the THERM pin.
6.18
Filter Control Register
Table 6.23 Filter Configuration Register
ADDR.
R/W
REGISTER
B7
B6
B5
B4
B3
B2
B1
B0
DEFAULT
40h
R/W
Filter Control
-
-
-
-
-
-
FILTER[1:0]
00h
The Filter Configuration Register controls the digital filter on the External Diode 1 channel.
Revision 2.0 (08-10-12)
SMSC EMC1403/EMC1404
DATA4S2HEET
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