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| 型號： | AMC6821 |
| 英文描述： | Analog Monitor and Control Circuit |
| 中文描述： | 模擬監(jiān)視和控制電路 |
| 文件頁數(shù)： | 20/47頁 |
| 文件大?。?/td> | 547K |
| 代理商： | AMC6821 |
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P
Status Register Read
THERM Limit
Temperature
THERM
INT
SMBALERT
via
INT
SMBALERT
via
5
°
AMC6821
SBAS386A–MAY 2006–REVISED MAY 2006
When the THERM limit is exceeded, the corresponding status flag bit (R-THERM or L-THERM of
Status
Register 1
or
Status Register 2
) is set to '1', and the THERM interrupt through the SMBALERT pin is generated
if it is enabled (THERMOVIE of bit
Configuration Register 1
is set to '1'). This interrupt forces the SMBALERT
pin low. Reading the status registers clears the flag bit (R-THERM and L-THERM). Clearing the flag bit makes
the SMBALERT pin go back to high, but does not negate the THERM pin. It remains low until the temperature
falls 5°C below the exceeded THERM limit. After this bit is cleared, the active flag bit (R-THERM for remote
temperature or L-THERM for local temperature) and the THERM interrupt are not re-armed until the temperature
falls 5
°
C below the exceeded THERM limit. This procedure is shown in
Figure 14
.
Figure 14. Operation of the THERM Interrupt and the THERM Pin
When working as an output, the status of the THERM pin affects the RPM fan. If the THERM-FAN-EN bit is set
('1'), the fan goes to full-speed (that is, the duty cycle is 100%) when the THERM pin goes low. However, when
THERM-FAN-EN = 0, the status of the THERM pin does not affect the fan speed.
THERM Pin As An Input
When this pin works as input, it is the input of the external hardware control signal; the THERM-IN bit of
Status
Register 2
reflects the input. When the THERM pin is pulled low as an input, THERM-IN is set ('1') and the fan is
driven at full speed (that is, the duty cycle is 100%), no matter what THERM-FAN-EN is. The THERM-FAN-EN
bit has no effect when the THERM pin works as an input.
20
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AMC6821EVM | 功能描述:溫度傳感器開發(fā)工具 ANA MONITOR RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| AMC6821EVM-PDK | 功能描述:溫度傳感器開發(fā)工具 THERMAL MGMT RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:Temperature Sensors and Control ICs 工具用于評估:MSP430G2553 接口類型:USB 工作電源電壓: 工作電源電流: |
| AMC6821-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:INTELLIGENT TEMPERATURE MONITOR AND PWM FAN CONTROLLER |
| AMC6821SDBQ | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Temp Monitoring and Fan Ctrl RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| AMC6821SDBQG4 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Temp Monitoring and Fan Ctrl RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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