EMC1422-1-ACZL-TR SMSC, EMC1422-1-ACZL-TR Datasheet - Page 27

• 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
03h
09h
1°C Temperature Sensor with Hardware Thermal Shutdown
Datasheet
SMSC EMC1422
6.4
R/W
R/W
Configuration
REGISTER
Bit 7 - BUSY - This bit indicates that the ADC is currently converting. This bit does not cause either
the ALERT or THERM pin to be asserted.
Bit 4 - HIGH - This bit is set when any of the temperature channels exceeds its programmed high limit.
See the High Limit Status Register for specific channel information
will assert the ALERT pin.
Bit 3 - LOW - This bit is set when any of the temperature channels drops below its programmed low
limit. See the Low Limit Status Register for specific channel information
bit will assert the ALERT pin.
Bit 2 - FAULT - This bit is asserted when a diode fault is detected on any of the external diode
channels. See the External Diode Fault Register for specific channel information
set, this bit will assert the ALERT pin.
Bit 1 - THERM - This bit is set when the any of the temperature channels exceeds its programmed
THERM limit. See the THERM Limit Status Register for specific channel information
Bit 0 - HWSD - This bit is set when the External Diode Temperature exceeds the Hardware Thermal
Shutdown Limit set by the pull-up resistors on the ALERT and SYS_SHDN pins. When set, this bit will
assert the SYS_SHDN pin.
The Configuration Register controls the basic operation of the device. This register is fully accessible
at either address.
Bit 7 - MASK_ALL - Masks the ALERT pin from asserting.
Bit 5 - ALERT/COMP - Controls the operation of the ALERT pin.
Bit 2 - RANGE - Configures the measurement range and data format of the temperature channels.
Bit 1 - DAVG_DIS - Disables the dynamic averaging feature on all temperature channels.
Configuration Register
‘0’ (default) - The ALERT pin is not masked. If any of the appropriate status bits are set the ALERT
pin will be asserted.
‘1’ - The ALERT pin is masked. It will not be asserted for any interrupt condition unless it is
configured as a THERM pin. The Status Registers will be updated normally.
‘0’ (default) - The ALERT pin acts as described in
‘1’ - The ALERT pin acts in comparator mode as described in
MASK_ALL bit is ignored.
‘0’ (default) - The temperature measurement range is 0°C to +127.875°C and the data format is
binary.
‘1’ -The temperature measurement range is -64°C to +191.875°C and the data format is offset
binary (see
‘0’ (default) - The dynamic averaging feature is enabled. All temperature channels will be converted
with an averaging factor that is based on the conversion rate as shown in
‘1’ - The dynamic averaging feature is disabled. All temperature channels will be converted with a
maximum averaging factor of 1x (equivalent to 11-bit conversion). For higher conversion rates, this
averaging factor will be reduced as shown in
MASK_
ALL
B7
Table
5.3).
B6
-
Table 6.4 Configuration Register
ALERT/
COMP
DATASHEET
B5
27
B4
-
Table
Section
5.1.
B3
-
5.3.
Section
RANGE
(Section
B2
(Section
5.3.2. In this mode the
6.14). When set, this bit
DAVG_
Table
DIS
Revision 1.36 (07-02-09)
B1
6.15). When set, this
(Section
5.1.
(Section
6.9). When
B0
-
6.16).
DEFAULT
00h