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W83783S Datasheet(PDF) 5 Page - Winbond

Part # W83783S
Description  Winbond H/W Monitoring IC
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83783S Datasheet(HTML) 5 Page - Winbond

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W83783S
Publication Release Date: August 21, 2007
- 1 -
Revision 1.0
1. GENERAL DESCRIPTION
W83783S is an evolving version of W83782D --- Winbond's most popular hardware status monitoring
IC. W83783S 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
computer system to work stable and properly. W83783S provides I2C
TM serial bus interface.
An 8-bit analog-to-digital converter (ADC) was built inside W83783S. W83783S can monitor 6 analog
voltage inputs, 3 fan tachometer inputs, and 3 remote temperatures. The remote temperature sensing
can be performed by thermistors, or 2N3904 NPN-type transistors, or directly from Intel
TM Deschutes
CPU thermal diode output. Also W83783S provides: 2 PWM (pulse width modulation) outputs for the
fan speed control; beep tone output for warning; SMI#, OVT#, GPO# signals for system protection
events.
Through the application software or BIOS, the users can read all the monitored parameters of system
from time to time. And a pop-up warning can be also activated when the monitored item is out of the
proper/preset range. The application software could be Winbond's Hardware Doctor
TM, or IntelTM
LDCM (LanDesk Client Management), or other management application software. Also the users can
set up the upper and lower limits (alarm thresholds) of these monitored parameters and to activate
one programmable and maskable interrupts. An optional beep tone could be used as warning signal
when the monitored parameter is out of the preset range.
Additionally, 5 VID inputs are provided to read the VID of CPU (i.e. Pentium
TM II) if applicable. This is
to provide the Vcore voltage correction automatically. Also W83783S uniquely provides an optional
feature: early stage (before BIOS was loaded) beep warning. This is to detect if the fatal elements
present --- Vcore or +3.3V voltage fail, and the system can not be boomed up.


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