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參數(shù)資料
| 型號： | DS2482-800 |
| 英文描述： | Eight-Channel 1-Wire Master |
| 中文描述： | 八通道1-Wire主控制器 |
| 文件頁數(shù)： | 17/22頁 |
| 文件大?。?/td> | 261K |
| 代理商： | DS2482-800 |
DS2482-800: Eight-Channel 1-Wire Master
17 of 22
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.
Figure 10. I2C Timing Diagram
SCL
SDA
STOP
START
t
BUF
t
HD:STA
t
LOW
t
R
t
HD:DAT
t
HIGH
t
SU:DAT
Repeated
START
t
SU:STA
t
F
t
HD:STA
t
SP
t
SU:STO
Spike
Suppression
NOTE: Timing is referenced to V
ILMAX
and V
IHMIN
.
Writing to the DS2482
To write to the DS2482, 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 will acknowledge valid command codes and expected/valid
command parameters. Additional bytes or invalid command parameters will never be acknowledged.
Reading from the DS2482
To read from the DS2482, 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 will read from. The master
may continue reading the same register over and over again, without having to re-address 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 again in read mode.
I2C Communication—Legend
SYMBOL
DESCRIPTION
SYMBOL
DESCRIPTION
S
START Condition
DRST
Command "Device Reset", F0h
AD,0
Select DS2482 for Write Access
WCFG
Command "Write Configuration", D2h
AD,1
Select DS2482 for Read Access
CHSL
Command "Channel Select", C3h
Sr
Repeated START Condition
SRP
Command "Set Read Pointer", E1h
P
STOP Condition
1WRS
Command "1-Wire Reset", B4h
A
Acknowledged
1WWB
Command "1-Wire Write Byte", A5h
A\
Not Acknowledged
1WRB
Command "1-Wire Read Byte", 96h
(Idle)
Bus Not Busy
1WSB
Command "1-Wire Single Bit", 87h
<byte>
Transfer of 1 Byte
1WT
Command "1-Wire Triplet", 78h
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2482-100 | Single-Channel 1-Wire Master |
| DS2482S-100 | Single-Channel 1-Wire Master |
| DS2482S-800 | Eight-Channel 1-Wire Master |
| DS2502-E48 | 48-Bit Node Address Chip |
| DS26401 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2482-800_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:8-Channel 1-Wire Master |
| DS2482S-100 | 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 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS2482S-100/R | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Single-Channel 1-Wire Master |
| DS2482S-100/T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Single-Channel 1-Wire Master |
| DS2482S-100/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 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
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