EMC1414-A-AIZL-TR SMSC, EMC1414-A-AIZL-TR Datasheet - Page 18

• Manufacturer Part Number: EMC1414-A-AIZL-TR
• Description: Board Mount Temperature Sensors SMBus Temp Sensor Selectable Address
• Manufacturer: SMSC

Specifications of EMC1414-A-AIZL-TR

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

Chapter 6 Product Description
Revision 1.38 (09-30-10)
Anti-parallel
Optional
CPU / GPU
diode
Thermal
Junction
The EMC1413/EMC1414 is an SMBus temperature sensor. The EMC1413 and EMC1414 monitor one
internal diode and up to three externally connected temperature diodes.
Thermal management is performed in cooperation with a host device. This consists of the host reading
the temperature data of both the external and internal temperature diodes of the EMC1413/EMC1414
and using that data to control the speed of one or more fans.
The EMC1413 and EMC1414 have two levels of monitoring. The first provides a maskable ALERT
signal to the host when the measured temperatures exceeds user programmable limits. This allows
the EMC1413 and EMC1414 to be used as an independent thermal watchdog to warn the host of
temperature hot spots without direct control by the host. The second level of monitoring provides a non
maskable interrupt on the THERM pin if the measured temperatures meet or exceed a second
programmable limit.
For the EMC1414, External Diode channels 2 and 3 are only compatible with general purpose diodes
(such as a 2N3904).
For the EMC1413, the External Diode 2 channel is compatible with any diode type.
Figure 6.1
block diagram of the EMC1413.
shows a system level block diagram of the EMC1414 and
DP1
DN1
DP2 / DN3
DN2 / DP3
EMC1414
Figure 6.1 System Diagram for EMC1414
GND
VDD
DATASHEET
VDD = 3.3V
ALERT
THERM / ADDR
SMCLK
SMDATA
Multiple Channel 1°C Temperature Sensor with Beta Compensation
18
3.3V – 5V
Interface
SMBus
Power Control
Figure 6.2
Host
SMSC EMC1413/EMC1414
shows a system level
Datasheet