EMC1422-1-ACZL-TR SMSC, EMC1422-1-ACZL-TR Datasheet - Page 34

• Manufacturer Part Number: EMC1422-1-ACZL-TR
• Description: Board Mount Temperature Sensors Dual Temp Snsr
• Manufacturer: SMSC

Specifications of EMC1422-1-ACZL-TR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

ADDR.
37h
Revision 1.36 (07-02-09)
6.16
6.17
ADDR.
40h
R-C
R/W
1
0
0
1
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
Bit 1 - ELOW - This bit is set when the External Diode 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.
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 1 - ETHERM - This bit is set when the External Diode channel exceeds it’s programmed THERM
limit.
Bit 0- ITHERM - This bit is set when the Internal Diode channel exceeds it’s programmed THERM limit.
R/W
The Filter Configuration Register controls the digital filter on the External Diode channel.
Bits 1-0 - FILTER[1:0] - Control the level of digital filtering that is applied to the External Diode
temperature measurements as shown in
filter behavior.
THERM Limit Status Register
Filter Control Register
R/W
REGISTER
THERM
Status
Limit
Section
Filter Control
REGISTER
FILTER[1:0]
5.3.2).
B7
-
Table 6.18 THERM Limit Status Register
Table 6.19 Filter Configuration Register
B6
-
B7
-
Table 6.20 Filter Settings
0
0
1
0
B5
-
DATASHEET
B6
-
Table
B4
-
34
B5
-
6.20. See
1°C Temperature Sensor with Hardware Thermal Shutdown
Disabled (default)
Level 1
Level 1
B4
B3
-
-
Figure
B3
-
B2
-
5.4and
B2
-
AVERAGING
ETHERM
Figure 5.5
FILTER[1:0]
B1
B1
for examples on the
B0
ITHERM
SMSC EMC1422
B0
DEFAULT
Datasheet
00h
DEFAULT
00h