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W83L784R, W83L785R, W83L785TS-S

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Info of W83L784R
Info of W83L785R
Info of W83L785TS-S

W83L784R, W83L785R, W83L785TS-S Selling Leads, Datasheet

MFG:WINBOND Package Cooled:02+ D/C:5

W83L784R, W83L785R, W83L785TS-S Datasheet download

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Part Number: W83L784R

MFG: WINBOND

Package Cooled: 02+

D/C: 5

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W83L784R General Description

W83L784R is an evolving product of W83782D --- Winbond's most popular hardware status monitoring IC. Specifically designed for the Notebook system, W83L784R 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 Notebook system to work stably and properly.

An 8-bit analog-to-digital converter (ADC) was built inside W83L784R. The W83L784R can monitor 4 analog voltage inputs, 2 fan tachometer inputs, one on-chip internal temperature sensor and 2 remote temperature sensors. The remote temperature sensing can be performed by thermistors, or 2N3904 NPN-type transistors, or directly from Intel^TM Deschutes CPU thermal diode output. The W83L784R provides 2 PWM (pulse width modulation) outputs for the fan speed control to support the } Thermal Cruise^TM ~ system, which can maintain the CPU or system in the specific programmable temperature under the hardware control. Another Fan speed control mode is }Speed Cruise} to Keep the fan operating in the specific r.p.m.. On the other hand, the W83L784R provides low active outputs such as fan fault and Battery low which could issue the hardware warning signals when the fan speed or battery voltage drop out of the preset range. Also the W83L784R provides: power good reset for 3V and 5V; power down mode for power saving; fault pin for necessary H/W shutdown control; SMI#, OVT#, GPO# signals for system protection events; I²C^TM serial bus interface.

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. For the spacing saving consideration of the Notebook system, W83L784R is in the package of 209mil 20pins-SSOP.

W83L784R Typical Application

2.1 Monitoring Items
· 2 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or Pentium^TM II (Deschutes) thermal diode output
· One on-chip temperature detection
· 4 voltage inputs
--- typical for Vcore, +3.3V, +5V, Battery
· 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
2.2 Actions Enabling
· 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^TM ~ or } Speed CruiseTM ~
--- Automatically maintain the CPU or system in the specific temperature or keep the fans in the 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
2.3 Power Good
· Issue RESET# outputs as the Power Good signal when 3V and 5V rise across a reset threshold.
2.4 General
· I2CTM serial bus interface
· 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
· Meet WfM 2.0 (Wired for Management) spec.
· 5V Vcc operation
2.5 Package
· 20-pin SSOP (209mil)

W83L784R Connection Diagram

W83L785R General Description

W83L785R is a condensed product of W83L785R --- Winbond's most popular hardware monitoring IC for notebook. Specifically designed for the graphic cards and notebook systems, W83L785R can be used to monitor several critical hardware parameters of the system, including voltages, fan speeds, and temperatures, which are very important for the system to work stably and properly.

An 8-bit analog-to-digital converter (ADC) was built inside W83L785R. The W83L785R can monitor 4 analog voltage inputs, 2 fan tachometer inputs, 2 remote temperature sensors. The remote temperature sensing can be performed by thermistors, or 2N3904 NPN-type transistors, or connected from IntelTM Deschutes CPU thermal diode output. The W83L785R provides 2 PWM (pulse width modulation) outputs for the fan speed control. Also the W83L785R provides: SMI#, OVT#, Temp fault, GPIO signals for system protection events; I²C^TM serial bus interface. W83L785R also provides 4 pure GPIO and 7 multifunctional GPIO pins, and powered by 3.3V.

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 Intel^TMLDCM (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. For the spacing saving consideration of the Notebook system, W83L785R is in the package of 209mil 20pins-SSOP.

W83L785R Maximum Ratings

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

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

W83L785R Features

2.1 Monitoring Items
· 2 thermal inputs from remote thermistors or 2N3904 NPN-type transistors 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^TMserial bus interface
· IntelTM LDCM (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
· Meet WfM 2.0 (Wired for Management) spec.
· 3.3V VCC operation
2.4 Package
· 20-pin SSOP (209mil)

W83L785R Connection Diagram

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