1.5°C SMBus Temperature Sensor in Miniature SOT-23
Datasheet
Chapter 1 Pin Configuration
ADDR/THERM
GND
V
DD
1
2
3
6
5
4
SMDATA
ALERT/THERM2
SMCLK
Figure 1.1 EMC1001 Pin Configuration
Table 1.1 Pin Description
PIN
ADDR/
THERM
PIN NO.
1
DESCRIPTION
Logic output that can be used to turn on/off a fan or throttle a CPU clock
in the event of an over-temperature condition. This is an open-drain
output. This pin is sampled following power up and the value of the pull
up resistor determines the SMBus slave address per
capacitance on this pin must not exceed 100 pF, and the pull-up resistor
must be connected to the same supply voltage as V
DD
Ground.
Supply Voltage, 3.0V to 3.6V.
SMBus clock input.
Logic output used as interrupt, SMBus alert or as a second
THERM
output.
This is an open-drain output.
SMBus data input/output, open drain output.
GND
V
DD
SMCLK
ALERT
/
THERM2
2
3
4
5
6
SMDATA
Table 1.2 SMBus Address Configuration Information
PART NUMBER
EMC1001
ADDR/THERM
PULL-UP RESISTOR
7.5kΩ
±5%
,
12kΩ
±5%
20kΩ
±5%
33kΩ
±5%
EMC1001-1
7.5kΩ
±5%
,
12kΩ
±5%
20kΩ
±5%
33kΩ
±5%
Note 1.1
Note 1.2
SMBUS
ADDRESS
1001 000b
1001 001b
0111 000b
0111 001b
1001 010b
1001 011b
0111 010b
0111 011b
PACKAGE
DESCRIPTION
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
6-Lead SOT-23
This value must be greater than 1kΩ
±5%
and less than or equal to 7.5kΩ
±5%.
The pull-up resistor must be connected to V
DD
(pin 1), and the total capacitance on this
pin must be less than 100pF.
SMSC EMC1001
DATASHEET
3
Revision 1.5 (04-15-05)
SMSC [ SMSC CORPORATION ]
