Publication Release Date: July, 2008

- 3 -

Version: 1.3

W83772G

6.

PIN DESCRIPTION

PIN NAME

NO

PIN TYPE

DESCRIPTION

VCC

1

POWER

DC Power Supply Voltage Input 3.3V

10%.

GND

2

GROUND

Power Supply Ground

D+

3

AIN

Connect to Thermal Diode Anode

D-

4

AIN

Connect to Thermal Diode Cathode

ADD1

5

IO

For Address select

RES

6

Reserved

ADD0

7

IO

For Address select

SST

8

IO

Simple Serial Transport (SST) Interface

7.

FUNCTIONAL DESCRIPTION

7.1

General Description

The W83772G provides one remote temperature sensor input which could be connected to 2N3904

transistor, or CPU/GPU thermal diode, and one local on-chip thermal sensor to detect ambient

temperature.

The data format of monitored temperature is 16-

bit 2’s complement. The system interface is the 1-wire

SST access interface.

7.2

Access Interface

The W83772G provides SST interface to read/write internal registers, and the SST address is

xxxxxxxxb, respectively. Please refer to 7.7 Address Selection.