GENERAL DESCRIPTION

W83L785R/G is a condensed product of W83L784R/G --- Winbonds most popular hardware monitoring IC for notebook. Specifically designed for the graphic cards and notebook systems, W83L785R can be used to monitor several critical hardware parameters of the system, including voltages, fan speeds, and temperatures, which are very important for the system to work stably and properly.

FEATURES

Monitoring Items

• 2 thermal inputs from remote thermistors or PentiumTM II

(Deschutes) thermal diode output

• 4 voltage inputs

--- typical for Vcore, +3.3V (Power), +2.5V, +1.5V

• 2 sets of PWM fan speed control

• WATCHDOG comparison of all monitored values

• Programmable hysteresis and setting points

(alarm thresholds) for all monitored items

Actions Enabling

• 2 PWM (pulse width modulation) outputs for fan speed control

--- Total up to 2 sets of fan speed monitoring and controlling

• Issue temperature fault signal as the temperature

of the system/CPU exceeds its limit.

• Issue SMI#, OVT#, GPIO and Temp. Fault signals

to activate system protection

• Warning signal pop-up in application software

General

• I2CTM serial bus interface

• IntelTM LDCM (DMI driver 2.0) support

• Winbond hardware monitoring application software

(Hardware DoctorTM ) support, for both

Windows 95/98 and Windows NT 4.0/5.0

• Meet WFM 2.0 (Wired for Management) spec.

• 3.3V VCC operation

Package

• 20-pin SSOP (209mil)