W83L785R Datasheet, PDF (6/38 Pages) Winbond – WINBOND H/W MONITORING IC FOR NOTEBOOK

W83L785R/W83L785G
2. FEATURES
2.1 Monitoring Items
• 2 thermal inputs from remote thermistors or Pentium^TM 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
2.2 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
2.3 General
• I²C^TM serial bus interface
• Intel^TM LDCM (DMI driver 2.0) support
• Winbond hardware monitoring application software (Hardware Doctor^TM ) 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
2.4 Package
• 20-pin SSOP (209mil)
3. KEY SPECIFICATIONS
• Voltage monitoring accuracy
• Monitoring Temperature Range and Accuracy
- 40°C to +120°C
• Supply Voltage
• Operating Supply Current
• Power Down Supply Current
• ADC Resolution
±1% (Max)
± 3°C(Max)
2.7V ~ 5.5V
2 mA typ.
10 uA typ.
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