EMC2102-DZK SMSC, EMC2102-DZK Datasheet - Page 29

• Manufacturer Part Number: EMC2102-DZK
• Description: Industrial Temperature Sensors RPM Fan Contrllr
• Manufacturer: SMSC

Specifications of EMC2102-DZK

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

RPM-Based Fan Controller with HW Thermal Shutdown
Datasheet
SMSC EMC2102
5.7.3
HW_SHDN
Temperature
TP
Internal HW_SHDN Signal
The HW_SHDN output from the Critical/Thermal Shutdown Monitor is a logical indicator of the
temperature state of the chosen external diode channel. HW_SHDN is an internal signal routed as an
input to the Thermal / Critical Shutdown logic.
The HW_SHDN output is set to logic ‘1’ when the indicated temperature exceeds the temperature
threshold (T
for a number of consecutive measurements defined by the fault queue. If the HW_SHDN output is
asserted and the temperature drops below T
not defined
P
) established by the TRIP_SET input pin (as shown in Figure 5.5, "HW_SHDN Operation")
Temperature
Exceeds TP
Figure 5.5 HW_SHDN Operation
DATASHEET
29
P
, then it will be set to a logic ‘0’ state.
Measurements End
After 4
HW_SHDN set
th
measurement,
Temperature drops
Revision 2.02 (05-17-07)
to TP or below