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參數(shù)資料
| 型號(hào)： | TC665 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | SMBus⑩ PWM Fan Speed Controllers With Fan Fault Detection |
| 中文描述： | ⑩的SMBus PWM風(fēng)扇與風(fēng)扇轉(zhuǎn)速控制器故障檢測(cè) |
| 文件頁數(shù)： | 20/36頁 |
| 文件大?。?/td> | 695K |
| 代理商： | TC665 |
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TC664/TC665
DS21737A-page 20
2002 Microchip Technology Inc.
6.4
STATUS REGISTER (STATUS)
The Status Register provides all the information about
what is going on within the TC664/TC665 devices. Fan
fault information, V
IN
status, RPM counter overflow
and over temperature indication are all available in the
Status Register. The Status Register is an 8-bit Read
only register with bits 1, 4, 6 and 7 unused. See
Register 6-4 below for the bit descriptions.
REGISTER 6-4:
STATUS REGISTER (STATUS)
U-0
U-0
—
—
bit 7
R-X
OTF
U-0
—
R-0
RCO
R-X
VSTAT
U-X
—
R-0
FF
bit 0
bit 7-6
bit 5
Unimplemented:
Read as ‘0’
OTF:
Over Temperature Fault Condition
For the TC664/TC665 device, this bit is set to the proper state immediately at startup and is
therefore treated as an unknown (X). If V
IN
is greater than the threshold required for 100% duty
cycle on V
OUT
(2.6 V typical), then the bit will be set to a ‘
1
’. If it is less than the threshold, the
bit will be set to ‘
0
’. This is determined at power-up.
1
= Over temperature condition has occurred.
0
= Normal operation, V
IN
is less than 2.6 V.
Unimplemented:
Read as ‘0’
RCO:
RPM Counter Overflow
1
= Fault condition. The maximum RPM reading of 12775 RPM in register RPM has been
exceeded. This bit will automatically reset to zero when the RPM reading comes back into
range.
0
= Normal operation. RPM reading is within limits (default).
VSTAT:
V
IN
Input Status
For the TC664/TC665 devices, the V
IN
pin status is checked immediately at power-up. If no
external thermistor or voltage output network is connected (V
IN
is open), this bit is set to a ‘
1
’.
If an external network is detected, this bit is set to ‘
0
’. If the V
IN
pin is open and SMBus operation
has not been selected in the Configuration Register, the V
OUT
duty cycle will default to 39.33%.
1
= V
IN
is open.
0
= Normal operation. Voltage present at V
IN
.
Unimplemented:
Read as ‘unknown’
FF:
Fan Fault
1
= Fault Condition. The value for fan RPM in the RPM Register has fallen below the value set
in the FAN_FAULT Threshold Register. The speed of the fan is too low and a fault condi-
tion is being indicated. The FAULT output will be pulled low at the same time. This fault bit
can be cleared using the Fan Fault Clear bit (FFCLR (bit 7<0>)) in the Configuration Reg-
ister.
0
= Normal Operation (default).
bit 4
bit 3
bit 2
bit 1
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
’1’ = Bit is set
U = Unimplemented bit
’0’ = Bit is cleared
x = Bit is unknown
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| TC665EUN | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Single 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 |
| TC665EUNTR | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Single 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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| TC670 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Tiny Predictive Fan Failure Detector |
| TC670_03 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Tiny Predictive Fan Failure Detector |
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