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參數(shù)資料
| 型號： | ADT7518ARQZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 39/40頁 |
| 文件大小： | 891K |
| 描述： | IC SENSOR TEMP QD ADC/DAC 16QSOP |
| 標準包裝： | 98 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應溫度： | -40°C ~ 120°C，外部傳感器 |
| 精確度： | ±3°C（最小值） |
| 拓撲： | ADC，比較器，多路復用器，寄存器庫 |
| 輸出類型： | I²C?，MICROWIRE?，QSPI?，SPI? |
| 輸出警報： | 無 |
| 輸出風扇： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 120°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設(shè)備封裝： | 16-QSOP |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 798 (CN2011-ZH PDF) |
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ADT7518
Rev. A | Page 39 of 40
The INT/INT
output can operate as an SMBALERT
function.
Slave devices on the SMBus cannot normally signal to the
master that they want to talk, but the
SMBALERT
function
allows them to do so. SMBALERT
is used in conjunction with
the SMBus general call address.
One or more INT/
INT
outputs can be connected to a com-
mon SMBALERT
line connected to the master. When the
SMBALERT
line is pulled low by one of the devices, the
following procedure occurs, as shown in Figure 64.
1. SMBALERT
pulled low.
2. Master initiates a read operation and sends the alert res-
ponse address (ARA = 0001 100). This is a general call
address that must not be used as a specific device address.
3. The devices whose INT/INT
output is low responds to the
alert response address and the master reads its device
address. As the device address is seven bits long, an LSB of
1 is added. The address of the device is now known and it
can be interrogated in the usual way.
4. If more than one devices INT/INT
output is low, the one
with the lowest device address will have priority in accor-
dance with normal SMBus specifications.
5. Once the ADT7518 has responded to the alert response
address, it will reset its INT/INT
output, provided that the
condition that caused the out-of-limit event no longer
exists and that the status register associated with the out-
of-limit event is read. If the SMBALERT
line remains low,
the master will send the ARA again. It will continue to do
this until all devices whose
SMBALERT
outputs were low
have responded.
MASTER
RECEIVES
SMBALERT
START
ALERT RESPONSE
ADDRESS
RD ACK DEVICE ADDRESS
MASTER SENDS
ARA AND READ
COMMAND
DEVICE SENDS
ITS ADDRESS
NO
ACK
STOP
Figure 64. INT/
INT
Responds to
SMBALERT
ARA
MASTER
RECEIVES
SMBALERT
START
ALERT RESPONSE
ADDRESS
RD ACK
DEVICE
ADDRESS
MASTER SENDS
ARA AND READ
COMMAND
DEVICE SENDS
ITS ADDRESS
DEVICE ACK
ACK PEC
NO
ACK
STOP
MASTE
ACK
MASTE
NACK
DEVICE SENDS
ITS PEC DATA
Figure 65. INT/INT
Responds to SMBALERT
ARA
With Packet Error Checking (PEC)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| ADT7519ARQ | 制造商:Analog Devices 功能描述:Temp Sensor Digital Serial (4-Wire, SPI, I2C) 16-Pin QSOP |
| ADT7519ARQ-REEL | 制造商:Analog Devices 功能描述:Temp Sensor Digital Serial (4-Wire, SPI, I2C) 16-Pin QSOP T/R |
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