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參數(shù)資料
| 型號： | MAX1669 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Fan Controller and Remote Temperature Sensor with SMBus Serial Interface |
| 中文描述： | 風(fēng)扇控制器及遠(yuǎn)端溫度傳感器，帶有SMBus串行接口 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大小： | 213K |
| 代理商： | MAX1669 |
GPIO Data Register
I/O1 and I/O2 are configured through the GPIO data
register and CONFIG byte register (Table 7 and Table 3).
Upon power-up, the GPIOs are set as inputs. To ensure
the I/Os are configured as inputs, set the state of the
DATA1 and DATA2 bits high within the GPIO data reg-
ister for I/O1 and I/O2, respectively. Figure 4 shows that
by setting the GPIO DATA_ bits high, the open-drain
FET connected to the I/O_ pins goes high impedance.
Next, clear the MASK1 and MASK2 bits low within the
CONFIG byte register to remove the masks on the
ALERT
interrupts for I/O1 and I/O2, respectively.
To use I/O1 or I/O2 as an output, first set the MASK1
and MASK2 bits high, respectively. Setting the MASK_
bits high within the CONFIG byte register masks out the
corresponding I/O
ALERT
interrupts. Since the internal
FETs are open-drain, a pull-up resistor is required from
I/O_ to V
CC
. The DATA1 and DATA2 bits within the
GPIO data register directly control the state of the out-
puts of I/O1 and I/O2, respectively (Figure 4).
M
Fan Controller and Remote Temperature Sensor
with SMBus Serial Interface
______________________________________________________________________________________
13
BIT
NAME
NAME
0
0
5
4
D1
D0
FAN duty-factor control bit
FAN duty-factor control bit
0
3–0
RFU
Reserved for future use
0
0
6
D2
7 (MSB)
D3
FUNCTION
FAN duty-factor control bit
FAN duty-factor control bit. D3–D0 are decoded as follows:
D3
–
D0
Duty
0000b
0%
0001b
6.67%
0010b
13.33%
0011b
20%
0100b
26.67%
0101b
33.33%
0110b
40%
0111b
46.67%
1000b
53.33%
1001b
60%
1010b
66.67%
1011b
73.33%
1100b
80%
1101b
86.67%
1110b
93.33%
1111b
100%
V
OUT
(nominal)
0V
0.0625
·
V
CC
0.125
·
V
CC
0.1875
·
V
CC
0.25
·
V
CC
0.3125
·
V
CC
0.375
·
V
CC
0.4375
·
V
CC
0.5
·
V
CC
0.5625
·
V
CC
0.625
·
V
CC
0.6875
·
V
CC
0.75
·
V
CC
0.8125
·
V
CC
0.875
·
V
CC
0.9375
·
V
CC
Table 6. Fan Duty-Factor Data Byte Bit Assignments (Write Command = 1Bh)
S
R
ALERT
MASK_ BITS
GPIO DATA_ BITS
DELAY
I/O_ PIN
ALERT RESPONSE
Figure 4. GPIO Logic Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1669EEE | 制造商:Maxim Integrated Products 功能描述:FAN CONTROLLER AND REMOTE TEMPERATURE SENSOR - Bulk |
| MAX1669EEE+ | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 16QSOP - Rail/Tube |
| MAX1669EEE+T | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 16QSOP - Tape and Reel |
| MAX1669EEE-T | 制造商:Maxim Integrated Products 功能描述:FAN CONTROLLER AND REMOTE TEMPERATURE SENSOR - Tape and Reel |
| MAX166ACPP | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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