GENERAL DESCRIPTION

W83783S is an evolving version of W83782D --- Winbonds most popular hardware status monitoring IC. The 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 highend computer system to work stable and properly. W83783S provides I2CTM serial bus interface.

FEATURES

2.1 Monitoring Items

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

• 6 voltage inputs

--- typical for Vcore, +3.3V, +12V, -12V, +5V, -5V

• 3 fan speed monitoring inputs

• Case open detection input

• WATCHDOG comparison of all monitored values

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

2.2 Actions Enabling

• Beep tone warning

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

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

• Issue SMI#, OVT#, GPO# signals to activate system protection

• Warning signal pop-up in application software

2.3 General

• I2CTM serial bus interface

• 5 VID input pins for CUP Vcore identification (for PentiumTM II)

• Initial power fault beep (for +3.3V, Vcore)

• 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 and Windows NT 4.0/5.0

• Input clock rate optional for 24, 48, 14.318 Mhz

• 5V Vcc operation

2.4 Package

• 24-pin SOP