W83L784R中文資料華邦電子數(shù)據(jù)手冊PDF規(guī)格書

GENERAL DESCRIPTION

W83L784R/G is an evolving product of W83782D/G --- Winbonds most popular hardware status monitoring IC. Specifically designed for the Notebook system, W83L784R/G can be used to monitor several critical hardware parameters of the system, including power supply voltages, fan speeds, and temperatures, which are very important for a high-end Notebook system to work stably and properly.

FEATURES

Monitoring Items

? 2 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or PentiumTM II (Deschutes) thermal diode output

? One on-chip temperature detection

? 4 voltage inputs

--- typical for Vcore, +3.3V, +5V, Battery

? 2 sets of fan speed control and fan speed monitoring input

? WATCHDOG comparison of all monitored values

? Programmable hysteresis and setting points (alarm thresholds) for all monitored items

Actions Enabling

? Issue fan fault signal as fans are abnomally stopped

? Issue battery low signal as bettery voltage is abnomally out of range

? 2 PWM (pulse width modulation) outputs for fan speed control to support Thermal CruiseTM or Speed CruiseTM

--- Automatically maintain the CPU or system in the specific temperature or keep the fans in the specific speed under the H/W control

? Issue SMI#, OVT#, GPO to activate system protection

? PWR_DN# setting for the Power down mode

? Warning signal pop-up in application software

Power Good

? Issue RESET# outputs as the Power Good signal when 3V and 5V rise across a reset threshold.

General

? I2CTM serial bus interface

? IntelTM LDCM (DMI driver 2.0) support

? AcerTM ADM (DMI driver 2.0) support

? Winbond hardware monitoring application software (Hardware DoctorTM ) support, for both Windows 95/98

? Meet WfM 2.0 (Wired for Management) spec.

? 5V Vcc operation

Package

? 20-pin SSOP (209mil)