Multiple Channel 1°C Temperature Sensors with Beta Compensation
Datasheet
Table 6.1 Supply Current vs. Conversion Rate for EMC1413 / EMC1414
AVERAGING FACTOR (BASED ON
11-BIT OPERATION)
ENABLED
(DEFAULT)
16x
16x
16x
16x
8x
4x
2x
1x
0.5x
0.25x
0.125x
AVERAGE SUPPLY CURRENT
ENABLED
(DEFAULT)
660uA
660uA
660uA
660uA
660uA
930uA
950uA
1010uA
1020uA
1050uA
1100uA
CONVERSION RATE
1 / 16 sec
1 / 8 sec
1 / 4 sec
1 / 2 sec
1 / sec
2 / sec
4 / sec (default)
8 / sec
16 / sec
32 / sec
64 / sec
DISABLED
430uA
430uA
430uA
430uA
430uA
475uA
510uA
630uA
775uA
1050uA
1100uA
DISABLED
1x
1x
1x
1x
1x
1x
1x
1x
0.5x
0.25x
0.125x
6.2
THERM Output
The THERM output is asserted independently of the ALERT output and cannot be masked. Whenever
any of the measured temperatures exceed the user programmed Therm Limit values for the
programmed number of consecutive measurements, the THERM output is asserted. Once it has been
asserted, it will remain asserted until all measured temperatures drop below the Therm Limit minus
the Therm Hysteresis (also programmable).
When the THERM pin is asserted, the THERM status bits will likewise be set. Reading these bits will
not clear them until the THERM pin is deasserted. Once the THERM pin is deasserted, the THERM
status bits will be automatically cleared.
6.3
ALERT Output
The ALERT pin is an open drain output and requires a pull-up resistor to V
DD
and has two modes of
operation: interrupt mode and comparator mode. The mode of the ALERT output is selected via the
ALERT / COMP bit in the Configuration Register (see
6.3.1
ALERT Pin Interrupt Mode
When configured to operate in interrupt mode, the ALERT pin asserts low when an out of limit
measurement (> high limit or < low limit) is detected on any diode or when a diode fault is detected.
The ALERT pin will remain asserted as long as an out-of-limit condition remains. Once the out-of-limit
condition has been removed, the ALERT pin will remain asserted until the appropriate status bits are
cleared.
The ALERT pin can be masked by setting the MASK_ALL bit. Once the ALERT pin has been masked,
it will be de-asserted and remain de-asserted until the MASK_ALL bit is cleared by the user. Any
interrupt conditions that occur while the ALERT pin is masked will update the Status Register normally.
There are also individual channel masks (see
Revision 1.41 (02-23-12)
20
SMSC EMC1413 / EMC1414
DATASHEET
SMSC [ SMSC CORPORATION ]
