w83l784r Winbond Electronics Corp America, w83l784r Datasheet - Page 7

• Manufacturer Part Number: w83l784r
• Description: Winbond H/w Monitoring Ic
• Manufacturer: Winbond Electronics Corp America

2. FEATURES
2.1 Monitoring Items
2.2 Actions Enabling
--- Automatically maintain the CPU or system in the specific temperature or keep the fans in the
2.3 Power Good
2.4 General
2.5 Package
Confidential, For Beta-site Only
2 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or Pentium
(Deschutes) thermal diode output
One on-chip temperature detection
4 voltage inputs
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
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 Cruise
} Speed Cruise
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
Issue RESET# outputs as the Power Good signal when 3V and 5V rise across a reset threshold.
I
Intel
Acer
Winbond hardware monitoring application software (Hardware Doctor
Windows 95/98
Meet WfM 2.0 (Wired for Management) spec.
5V Vcc operation
20-pin SSOP (209mil)
--- typical for Vcore, +3.3V, +5V, Battery
2
C
TM
TM
TM
serial bus interface
LDCM (DMI driver 2.0) support
ADM (DMI driver 2.0) support
TM
~
-6 -
TM
Publication Release Date: Sep.
) support, for both
W83L784R
Preliminary
TM
Revision 0.54
II
TM
~ or
1999