Publication Release Date: July, 2008

- 5 -

Version: 1.3

W83772G

7.5

Sensor Error Conditions

When the external diode is opened or shorted, the W83772G will return 0x8001 in response to either

the SST command GetExtTemp() or GetAllTemp() command. It will also return 0x8002/0x8003 when

detecting temperature below -128°C /above +128°C.

7.6

Conversion Time

W83772G provides 250mS conversion time for monitoring all temperature readings. The conversion

time is related to the internal self-generated clock.

The internal clock frequency is dependent on the

temperature. There is 10% frequency deviation in the operating temperature range of 0°C and 70°C.

7.7

Address Selection

W83772G has two address pins. These pins may be either tied to Vcc, ground or left open. After the

internal reset ends, pin ADD0/ADD1 will start to drive and sink current to detect the pin status

– HIGH,

LOW or FLOATING and then decide the SST address of W83772G. The address will be retained as

long as the VCC of W83772G is maintained. The recommended pull-up or pull-down resistor value is

330Ω. (Please refer to the DC specification for the source and sink current.) The pull-up power plane

must be the same as the VCC power of W83772G.

Figure 2.

W83772G

ADDx

VCC

R=330

Ω

VCC

GND

W83772G

ADDx

VCC

R=330

Ω

VCC

GND

W83772G

ADDx

VCC

VCC

GND

NC(Floating)