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参数资料
| 型号： | W83L786NG |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 通信及网络 |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PDSO20 |
| 封装： | 0.209 INCH, LEAD FREE, SSOP-20 |
| 文件页数： | 14/50页 |
| 文件大小： | 998K |
| 代理商： | W83L786NG |
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W83L786NR/ W83L786NG
- 16 -
speed. (For more cost and effort efficient solution please refer to W83391TS/QS – the DC fan pre-
driver that could provide up to 24V gate voltage for external N-channel MOSFET driving)
7.6.3
SMART FANTM I Control
W83L786NR/NG supports two sets SMART FAN
TM I function and mapping to D+,D- (PWM/DC_OUT1),
VTIN1 (PWM/DC_OUT2) . If CR80 [3:2] or CR80 [5:4] set to 2’b10, Fan1 or Fan2 will enable SMART
FAN
TM I function.
At this mode, W83L786NR/NG provides the SMART FAN
TM system to automatically control fan speed to
keep the temperatures of CPU and the system within specific range. At first a wanted temperature and
interval must be set (ex. 55
°C ± 3 °C) by BIOS and the fan speed will be lowered as long as the
current temperature remains below the setting value. Once the temperature exceeds the high limit
(58
°C), the fan will be turned on with a specific speed set by BIOS (ex: 80% duty cycle) and
automatically controlled its PWM duty cycle with the temperature varying. Three conditions may occur:
(1) If the temperature still exceeds the high limit (ex: 58
°C), PWM duty cycle will increase slowly. If the
fan has been operating in its full speed but the temperature still exceeds the high limit (ex: 58
°C),
a warning message will be issued to protect the system.
(2) If the temperature goes below the high limit (ex: 58
°C), but still above the low limit (ex: 52°C), the
fan speed will be fixed at the current speed because the temperature is in the target range (ex: 52
°C ~ 58°C).
(3) If the temperature goes below the low limit (ex: 52
°C), PWM duty cycle will decrease slowly to 0 or
a preset stop value until the temperature exceeds the low limit.
Figure 11-1, 11-2 gives an illustration of Thermal Cruise Mode.
55`C
58`C
52`C
PWM
Duty
Cycle
100
0
50
Fan Start = 20%
A
B
C
D
Figure 11-1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| W83L786NR | 制造商:WINBOND 制造商全称:Winbond 功能描述:H/W Monitoring IC |
| W83L786R | 制造商:WINBOND 制造商全称:Winbond 功能描述:H/W Monitoring IC |
| W83L951ADG | 制造商:WINBOND 制造商全称:Winbond 功能描述:Mobile Keyboard and Embedded Controller |
| W83L951DG | 功能描述:IC EMBEDDED CNTRLR 128-LQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:W83 标准包装:250 系列:80C 核心处理器:8051 芯体尺寸:8-位 速度:16MHz 连通性:EBI/EMI，I²C，UART/USART 外围设备:POR，PWM，WDT 输入/输出数:40 程序存储器容量:- 程序存储器类型:ROMless EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:A/D 8x10b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:68-LCC（J 形引线） 包装:带卷 (TR) |
| W83L951FG | 制造商:WINBOND 制造商全称:Winbond 功能描述:Mobile Keyboard and Embedded Controller |
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