1.5°C SMBus Temperature Sensor in Miniature SOT-23

Datasheet

SMSC EMC1001

3

Revision 1.6 (01-29-07)

DATASHEET

Chapter 1 Pin Configuration

Figure 1.1 EMC1001 Pin Configuration

Note 1.1

This value must be greater than 1k

Ω ±5% and less than or equal to 7.5kΩ ±5%.

Note 1.2

pin must be less than 100pF.

Table 1.1 Pin Description

PIN

PIN NO.

DESCRIPTION

1

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 Table 1.2.Total

capacitance on this pin must not exceed 100 pF, and the pull-up resistor

GND

2

Ground.

3

Supply Voltage, 3.0V to 3.6V.

SMCLK

4

SMBus clock input.

ALERT

5

This is an open-drain output.

SMDATA

6

SMBus data input/output, open drain output.

Table 1.2 SMBus Address Configuration Information

PART NUMBER

ADDR/THERM

PULL-UP RESISTOR

SMBUS

ADDRESS

PACKAGE

DESCRIPTION

EMC1001

7.5k

Ω ±5% Note 1.1, Note 1.2 1001 000b

6-Lead SOT-23

12k

Ω ±5% Note 1.2

1001 001b

6-Lead SOT-23

20k

Ω ±5% Note 1.2

0111 000b

6-Lead SOT-23

33k

Ω ±5% Note 1.2

0111 001b

6-Lead SOT-23

EMC1001-1

7.5k

Ω ±5% Note 1.1, Note 1.2 1001 010b

6-Lead SOT-23

12k

Ω ±5% Note 1.2

1001 011b

6-Lead SOT-23

20k

Ω ±5% Note 1.2

0111 010b

6-Lead SOT-23

33k

Ω ±5% Note 1.2

0111 011b

6-Lead SOT-23

6

4

1

2

3

GND

V

DD

SMDATA

SMCLK

5

ADDR/THERM

ALERT/THERM2