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参数资料
| 型号： | MAX6616AEG+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 14/20页 |
| 文件大小： | 194K |
| 描述： | IC TEMP MON FAN CNTRL 24QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 风扇控制，温度监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 140°C |
| 精确度： | ±1°C 本地（最大），±4°C 远程（最大） |
| 拓扑： | ADC |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 无 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 带卷 (TR) |
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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