參數(shù)資料
型號(hào)： DS2482S-100+T&R
廠商： Maxim Integrated Products
文件頁數(shù)： 9/24頁
文件大?。?/td> 0K
描述： IC I2C TO 1WIRE BRIDGE 8SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
系列： *
其它名稱： DS2482S-100+T&RDKR
Single-Channel 1-Wire Master
some time later the slave may refuse to accept data,
possibly because of an invalid command code or
parameter. In this case, the slave device does not
acknowledge any of the bytes that it refuses and
leaves SDA high. In either case, after a slave has
failed to acknowledge, the master first should gener-
ate a repeated START condition or a STOP condition
followed by a START condition to begin a new data
transfer.
Not Acknowledged by Master: At some time when
receiving data, the master must signal an end of
data to the slave device. To achieve this, the master
does not acknowledge the last byte that it has
received from the slave. In response, the slave
releases SDA, allowing the master to generate the
STOP condition.
Writing to the DS2482-100
To write to the DS2482-100, the master must access
the device in write mode, i.e., the slave address must
be sent with the direction bit set to 0. The next byte to
be sent is a command code, which, depending on the
command, may be followed by a command parameter.
The DS2482-100 acknowledges valid command codes
and expected/valid command parameters. Additional
bytes or invalid command parameters are never
acknowledged.
Reading from the DS2482-100
To read from the DS2482-100, the master must access
the device in read mode, i.e., the slave address must
be sent with the direction bit set to 1. The read pointer
determines the register that the master reads from. The
master can continue reading the same register over
and over again, without having to readdress the device,
e.g., to watch the 1WB changing from 1 to 0. To read
from a different register, the master must issue the Set
Read Pointer command and then access the DS2482-
100 again in read mode.
I2C Communication Examples
See Tables 4 and 5 for the I2C communication legend
and data direction codes.
Table 4. I2C Communication—Legend
SYMBOL
DESCRIPTION
S
START Condition
AD, 0
Select DS2482-100 for Write Access
AD, 1
Select DS2482-100 for Read Access
Sr
Repeated START Condition
P
STOP Condition
A
Acknowledged
A\
Not Acknowledged
(Idle)
Bus Not Busy
<byte>
Transfer of One Byte
DRST
Command “Device Reset”, F0h
SRP
Command “Set Read Pointer”, E1h
WCFG
Command “Write Configuration”, D2h
1WRS
Command “1-Wire Reset”, B4h
1WSB
Command “1-Wire Single Bit”, 87h
1WWB
Command “1-Wire Write Byte”, A5h
1WRB
Command “1-Wire Read Byte”, 96h
1WT
Command “1-Wire Triplet”, 78h
Table 5. Data Direction Codes
Master-to-Slave
Slave-to-Master
DS2482-100
Maxim Integrated
17
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2482S-101+ 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Channel 1-Wire Master with Sleep Mode
DS2482S-101+TR 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Channel 1-Wire Master with Sleep Mode
DS2482S-800 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
DS2482S-800/T&R 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
DS2482S-800+ 功能描述:接口 - 專用 8 Ch 1-Wire Master RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
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