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參數(shù)資料
| 型號(hào)： | MAX6616AEG+T |
| 廠商： | Maxim Integrated |
| 文件頁(yè)數(shù)： | 14/20頁(yè) |
| 文件大?。?/td> | 194K |
| 描述： | IC TEMP MON FAN CNTRL 24QSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 功能： | 風(fēng)扇控制，溫度監(jiān)控器 |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | 0°C ~ 140°C |
| 精確度： | ±1°C 本地（最大），±4°C 遠(yuǎn)程（最大） |
| 拓?fù)洌?/td> | ADC |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報(bào)： | 無 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-QSOP |
| 包裝： | 帶卷 (TR) |
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Dual-Channel Temperature Monitors and
Fan-Speed Controllers with Thermistor Inputs
14 ______________________________________________________________________________________
Table 3. Register Map (continued)
R/W ADD
POR
STATE
FUNCTION
D7
D6
D5
D4
D3
D2
D1
D0
R/W 1Ch
0000
0000
Fan status
byte
1 = fan 1
failure
1 = fan 2
failure
1 =
disabled
fan 1
tach
1 =
disabled
fan 2 tach
1 =
measure
fan 1
when it is
full speed
1 =
measure
fan 2
when it is
full speed
1 = m ask
FAN_FAIL
p
i n
1 = fan 1
fail sets
fan 2
100%
R
1Eh
0000
0000
Channel 1
temp LSBs
MSB
(1/2癈)
LSB
(1/8癈)
R
1Fh
0000
0000
Channel 2
temp LSBs
MSB
(1/2癈)
LSB
(1/8癈)
R
FDh
0000
0001
Read device
revision
0
0
0
0
0
0
0
1
R
FEh
0110
1000
Read device
ID
0
1
1
0
1
0
0
0
R
FFh
0100
1101
Read
m anufactur er
ID
0
1
0
0
1
1
0
1
*GPIO0 POR values are set by PRESET.
Table 4. Configuration Byte Definition (02h)
BIT
NAME
POR
STATE
FUNCTION
7
RUN/STANDBY
0
Set to zero for normal operation. Set to 1 to suspend conversions and PWM outputs.
6
POR
0
Set to 1 to perform reset of all device registers.
5
TIMEOUT
0
Set TIMEOUT to zero to enable SMBus timeout for prevention of bus lockup. Set to 1 to
disable this function.
4
FAN1 PWM INVERT
1
Set fan PWM invert to zero to force PWM1 low when the duty cycle is 100%. Set to 1 to
force PWM1 high when the duty cycle is 100%.
3
FAN2 PWM INVERT
1
Set fan PWM invert to zero to force PWM2 low when the duty cycle is 100%. Set to 1 to
force PWM2 high when the duty cycle is 100%.
2
MIN DUTY CYCLE
0
Set min duty cycle to zero for a 0% duty cycle when the measured temperature is below the
fan-temperature threshold in automatic mode. When the temperature equals the fan-
temperature threshold, the duty cycle is the value in the fan-start duty-cycle register, and it
increases with increasing temperature.
Set min duty cycle to 1 to force the PWM duty cycle to the value in the fan-start duty-cycle
register when the measured temperature is below the fan-temperature threshold. As the
temperature increases above the temperature threshold, the duty cycle increases as
programmed.
1
TEMPERATURE
SOURCE SELECT
0
Selects either local or remote 2 as the source for temperature channel 2 register data.
When D1 = 0, the MAX6615/MAX6616 measure remote 2 and when D1 = 1, the
MAX6615/MAX6616 measure the internal die temperature.
0
SPIN-UP DISABLE
0
Set spin-up disable to 1 to disable spin-up. Set to zero for normal fan spin-up.
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