EMC1422 SMSC Corporation, EMC1422 Datasheet - Page 17

• Manufacturer Part Number: EMC1422
• Description: 1C Temperature Sensor
• Manufacturer: SMSC Corporation

1°C Temperature Sensor with Hardware Thermal Shutdown
Datasheet
SMSC EMC1422
5.2
5.3
4.7K OHM ±10%
6.8K OHM ±10%
10K OHM ±10%
15K OHM ±10%
22K OHM ±10%
33K OHM ±10%
PULL-UP
3.3V
ALERT
SYS_SHD
Hardware Thermal Shutdown Limit
ALERT Output
Shutdown Sensor
PULL-UP
The Hardware Thermal Shutdown Limit temperature is determined by pull-up resistors on the
SYS_SHDN and ALERT pins shown in
The ALERT pin is an open drain output and requires a pull-up resistor to V
operation: interrupt mode and comparator Mode. The mode of the ALERT output is selected via the
ALERT / COMP bit in the Configuration Register (see
H/W Thermal
ALERT
4.7K OHM
±10%
Figure 5.2 Block Diagram of Hardware Thermal Shutdown
77°C
78°C
79°C
80°C
81°C
82°C
Table 5.2 SYS_SHDN Threshold Temperature
Internal Diode
Temperature
Temperature
and THERM
Conversion
Conversion
Compare
Function
Select
Limit
6.8K OHM
±10%
83°C
84°C
85°C
86°C
87°C
88°C
Hardware Thermal Shutdown
DATASHEET
Table
10K OHM
17
SW_SHDN
±10%
89°C
90°C
91°C
92°C
93°C
94°C
Shutdown Enable
HW_SHDN
5.2.
Software
Section
15K OHM
100°C
±10%
95°C
96°C
97°C
98°C
99°C
6.4).
22K OHM
101°C
102°C
103°C
104°C
105°C
106°C
±10%
DD
3.3V
SMBus
Traffic
and has two modes of
Revision 1.16 (03-15-07)
SYS_SHDN
33K OHM
107°C
108°C
109°C
110°C
111°C
112°C
±10%