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參數資料
| 型號： | ADT7518ARQ-REEL7 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | SPI/I2C Compatible, Temperature Sensor, 4-Channel ADC and Quad Voltage Output DAC |
| 中文描述： | SPI/I2C兼容，溫度傳感器，4通道ADC和四路電壓輸出DAC |
| 文件頁數： | 38/40頁 |
| 文件大?。?/td> | 1217K |
| 代理商： | ADT7518ARQ-REEL7 |
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ADT7518
Rev. A | Page 38 of 40
D7
D6
D5
D4
D3
D2
D1
X
X
X
X
X
X
X
D0
X
CS
SCLK
DIN
DOUT
1
8
1
8
X
X
X
X
X
X
X
D6
D5
D4
D3
D2
D1
D0
X
D7
CS (CONTINUED)
SCLK (CONTINUED)
DIN (CONTINUED)
DOUT (CONTINUED)
STOP
X
X
X
X
X
X
X
X
1
8
D7
D6
D5
D4
D3
D2
D1
D0
0
START
READ COMMAND
DATA BYTE 1
DATA BYTE 2
Figure 62. SPI—Reading Two Bytes of Data From Two Sequential Registers
CS
SPI
READ OPERATION
WRITE OPERATION
0
Figure 63. SPI—Correct Use of CS During SPI Communication
SMBus/SPI INT/INT
The ADT7518 INT/INT output is an interrupt line for devices
that want to trade their ability to master for an extra pin. It is a
slave device and uses the SMBus/SPI INT/INT to signal the host
device that it wants to talk to. The SMBus/SPI INT/INT on the
ADT7518 is used as an over/under limit indicator.
The INT/INT pin has an open-drain configuration that allows
the outputs of several devices to be wired-AND’ed together
when the INT/INT pin is active low. Use C6 of the Control
Config-uration 1 register to set the active polarity of the
INT/INT out-put. The power-up default is active low. The
INT/INT output can be disabled or enabled by setting C5 of the
Control Config-uration 1 register to 1 or 0, respectively.
The INT/INT output becomes active when either the internal
temperature value, the external temperature value, V
DD
value, or
any of the AIN input values exceed the values in their corres-
ponding T
HIGH
/V
HIGH
or T
LOW
/V
LOW
registers. The INT/INT out-
put goes inactive again when a conversion result has the
measured value back within the trip limits and when the status
register associated with the out-of-limit event is read. The two
interrupt status registers show which event caused the INT/INT
pin to go active.
The INT/INT output requires an external pull-up resistor. This
can be connected to a voltage different from V
DD
, provided the
maximum voltage rating of the INT/INT output pin is not
exceeded. The value of the pull-up resistor depends on the
application but should be large enough to avoid excessive sink
currents at the INT/INT output, which can heat the chip and
affect the temperature reading.
SMBUS ALERT RESPONSE
The INT/INT pin behaves the same way as an SMBus alert pin
when the SMBus/I
2
C interface is selected. It is an open-drain
output and requires a pull-up to V
DD
. Several INT/INT outputs
can be wire-AND’ed together, so that the common line will go
low if one or more of the INT/INT outputs goes low. The polar-
ity of the INT/INT pin must be set active low for a number of
outputs to be wire-AND’ed together.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ADT7518ARQ-U3 | 制造商:Analog Devices 功能描述:- Bulk |
| ADT7518ARQZ | 功能描述:IC SENSOR TEMP QD ADC/DAC 16QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:2,500 系列:SilentSense™ 功能:溫度監控系統（傳感器） 傳感器類型:內部和外部 感應溫度:-55°C ~ 125°C，外部傳感器 精確度:±2°C 本地（最大），±3°C 遠程（最大） 拓撲:ADC（三角積分型），比較器，寄存器庫 輸出類型:I²C?/SMBus? 輸出警報:是 輸出風扇:是 電源電壓:2.7 V ~ 5.5 V 工作溫度:-55°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-MSOP 包裝:帶卷 (TR) 其它名稱:MIC284-2BMMTRMIC284-2BMMTR-ND |
| ADT7518ARQZ-REEL | 制造商:Analog Devices 功能描述:Temp Sensor Analog Serial (4-Wire, SPI, I2C) 16-Pin QSOP T/R |
| ADT7518ARQZ-REEL7 | 制造商:Analog Devices 功能描述:Temp Sensor Analog Serial (4-Wire, SPI, I2C) 16-Pin QSOP T/R |
| ADT7519 | 制造商:AD 制造商全稱:Analog Devices 功能描述:SPI-/I2C-Compatible, Temperature Sensor,4-Channel ADC and Quad Voltage Output |
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