1°C Triple SMBus Sensor with Resistance Error Correction
Datasheet
Chapter 1 Pin Configuration
V
DD
DP1/DN2
DN1/DP2
ADDR/THERM
1
2
3
4
8
SMCLK
SMDATA
ALERT/THERM2
GND
EMC1033
TOP VIEW
7
6
5
Figure 1.1 EMC1033 Pin Configuration
Table 1.1 Pin Description
PIN
V
DD
DP1/DN2
DN1/DP2
ADDR
/
THERM
PIN NO.
1
2
3
4
DESCRIPTION
Supply Voltage, 3.0V to 3.6V.
Anode connection for remote temperature diode 1 and cathode
connection for remote temperature diode 2.
Cathode connection for remote temperature diode1 and anode connection
for remote temperature diode 2.
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 reset 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.
Logic output used as interrupt, SMBus alert or as a second THERM
output. This is an open-drain output.
SMBus data input/output. This is an open-drain output.
SMBus clock input.
Table 1.2 SMBus Slave Address
GND
ALERT
/
THERM2
5
6
7
8
SMDATA
SMCLK
ADDR/THERM
PULL-UP RESISTOR
7.5kΩ
±5%
,
12kΩ
±5%
20kΩ
±5%
33kΩ
±5%
Note 1.1
Note 1.2
SMBUS
ADDRESS
1001 100b
1001 101b
0111 100b
0111 101b
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 EMC1033
DATASHEET
3
Revision 1.1 (01-19-07)
SMSC [ SMSC CORPORATION ]
