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W83L785R PDF даташит

Спецификация W83L785R изготовлена ​​​​«Winbond» и имеет функцию, называемую «WINBOND H/W MONITORING IC FOR NOTEBOOK».

Детали детали

Номер произв W83L785R
Описание WINBOND H/W MONITORING IC FOR NOTEBOOK
Производители Winbond
логотип Winbond логотип 

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W83L785R Даташит, Описание, Даташиты
W83L785R
WINBOND H/W MONITORING IC FOR NOTEBOOK
1. 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; I2CTM 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 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, W83L785R is in the package of 209mil 20pins-SSOP.









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W83L785R Даташит, Описание, Даташиты
W83L785R
Preliminary
2. FEATURES
2.1 Monitoring Items
2 thermal inputs from remote thermistors or 2N3904 NPN-type transistors or PentiumTM 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
I2CTM serial 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)
Publication Release Date: Apr. 2001
- 2 - Revision 0.28web









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W83L785R Даташит, Описание, Даташиты
3. KEY SPECIFICATIONS
Voltage monitoring accuracy
Monitoring Temperature Range and Accuracy
- 40°C to +120°C
Supply Voltage
Operating Supply Current
Power Down Supply Current
ADC Resolution
±1% (Max)
± 3°C(Max)
2.7V ~ 5.5V
2 mA typ.
20 uA typ.
8 Bits
W83L785R
Preliminary
4. PIN CONFIGURATION
FANIN1/GPIO1
FANIN2/GPIO2
PWMOUT1
PWMOUT2
GPIO5
GPIO6
SMI#/GPIO7
OVT#/GPIO8
SCL
SDA
1 20
2 19
3 18
4 17
5 16
6 15
7 14
8 13
9 12
10 11
VCC
CPUT1/PII1
CPUT2/PII2
VREF
VCORE/GPIO16
+1.5V/GPIO15
+2.5VIN/GPIO14
GPIO13
GND
TEMP_FAULT/GPIO11
Publication Release Date: Apr. 2001
- 3 - Revision 0.28web










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Номер в каталогеОписаниеПроизводители
W83L785RWINBOND H/W MONITORING IC FOR NOTEBOOKWinbond
Winbond

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