W83782G

Series: -
Accuracy: ±3°C(Max)
Mounting Type: Surface Mount
Output Fan: Yes
Output Alarm: No
Function: Hardware Monitor
Operating Temperature: 0°C ~ 70°C
Sensor Type: External
Sensing Temperature: External Sensor
Voltage - Supply: 4.5 V ~ 5.5 V
Packaging: Tray
Manufacturer: Nuvoton Technology Corporation of America
Topology: ADC, Fan Speed Counter, Register Bank
Output Type: I²C?, ISA
Package / Case: 48-LQFP
Supplier Device Package: 48-QFP (7x7)


Features:

Monitoring Items
• 3 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or PentiumTM II (Deschutes) thermal diode output
• 9 voltage inputs
− Typical for Vcore, +3.3V, +12V, -12V, +5V, -5V, +5V Vsb, Vbat, and one reserved
• 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

Pinout




Specifications

PARAMETER	RATING	UNIT
Power Supply Voltage	-0.5 to 7.0	V
Input Voltage	-0.5 to VDD+0.5	V
Operating Temperature	0 to +70
Storage Temperature	-55 to +150

Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the device.

Description

W83782D/G is an evolving version of W83781D/G -- Winbond's most popular hardware status monitoring IC. The W83782D/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 computer system to work stable and properly. W83782D/G provides both ISA and I²CTM  serial bus interface.

An 8-bit analog-to-digital converter (ADC) was built inside W83782D/G. The W83782D/G can simultaneously monitor 9 analog voltage inputs, 2 fan tachometer inputs, 3 remote temperature, one case-open detection signal. The remote temperature sensing can be performed by thermistors, or 2N3904 NPN-type transistors, or directly from IntelTM Deschutes CPU thermal diode output. Also the W83782D/G provides 4 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 was out of the proper/preset range. The application software could be Winbond's Hardware DoctorTM, 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 parameters are out of the preset range.

Additionally, 5 VID inputs are provided to read the VID of CPU (i.e. PentiumTM II) if applicable. This is to provide the Vcore voltage correction automatically. Also W83782D/G 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. Also there are 3 specific pins to provide selectable address setting for application of multiple devices (up to 8 devices) wired through I2CTM interface.

Parameters:

Technical/Catalog Information	W83782G
Vendor	Nuvoton Technology Corporation of America
Category	Integrated Circuits (ICs)
Voltage - Supply	5V
Package / Case	48-LQFP
Packaging	Tray
Output Type	*
Sensing Temperature	*
Lead Free Status	Lead Free
RoHS Status	RoHS Compliant
Other Names	W83782G W83782G