EMC1424 SMSC Corporation, EMC1424 Datasheet - Page 19

• Manufacturer Part Number: EMC1424
• Description: (EMC1423 / EMC1424) Temperature Sensor
• Manufacturer: SMSC Corporation

1°C Temperature Sensor with Hardware Thermal Shutdown
Datasheet
SMSC EMC1423/EMC1424
5.2
4.7K OHM ±10%
6.8K OHM ±10%
10K OHM ±10%
15K OHM ±10%
22K OHM ±10%
33K OHM ±10%
PULL-UP
ALERT
SYS_SHD
Hardware Thermal Shutdown Limit
3.3V
PULL-UP
The Hardware Thermal Shutdown Limit temperature is determined by pull-up resistors on the
SYS_SHDN and ALERT pins shown in
Shutdown Sensor
H/W Thermal
S/W Set Sensor
S/W Set Sensor
4.7K OHM
S/W Set Sensor
(EMC1424 only)
ALERT
±10%
Figure 5.3 Block Diagram of Hardware Thermal Shutdown
77°C
78°C
79°C
80°C
81°C
82°C
Table 5.3 SYS_SHDN Threshold Temperature
Internal Diode
THERM Limit
Temperature
Temperature
Conversion
Conversion
and up to 4
Registers
Function
6.8K OHM
Select
±10%
83°C
84°C
85°C
86°C
87°C
88°C
Hardware Thermal Shutdown
DATASHEET
Table
10K OHM
19
SW_SHDN
±10%
89°C
90°C
91°C
92°C
93°C
94°C
Shutdown Enable
HW_SHDN
5.3.
Software
15K OHM
100°C
±10%
95°C
96°C
97°C
98°C
99°C
22K OHM
101°C
102°C
103°C
104°C
105°C
106°C
±10%
3.3V
SMBus
Traffic
Revision 1.16 (03-15-07)
SYS_SHDN
33K OHM
107°C
108°C
109°C
110°C
111°C
112°C
±10%