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參數(shù)資料
| 型號(hào)： | DS2480B+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 29/32頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC LINE DRVR W/SENSOR 1-W 8SOIC |
| 產(chǎn)品培訓(xùn)模塊： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | * |
| 其它名稱： | DS2480B+T&RDKR |
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DS2480B
Maxim Integrated............................................................................................................................................................................................. 6
In addition to the command codes explained in the subsequent sections the DS2480B understands the
following reserved command codes:
E1h
switch to Data Mode
E3h
switch to Command Mode
F1h
pulse termination
Except for these reserved commands, the Search Accelerator control and the first byte after power-on
reset or master reset cycle, every legal command byte generates a response byte. The pulse termination
code triggers the response byte of the terminated pulse command. Illegal command bytes do not generate
a command response byte.
COMMUNICATION COMMANDS
The DS2480B supports four communication function commands: Reset, Single Bit, Pulse, and Search
Accelerator control. Details on the assignment of each bit of the command codes are shown in Table 1.
The corresponding command response bytes are detailed in Table 2. The Reset, Search Accelerator
Control and Single Bit commands include bits to select the 1-Wire communication speed (standard,
flexible, Overdrive). Even if a command does not generate activity on the 1-Wire bus, these bits are
latched inside the device and will take effect immediately.
Reset
The Reset command must be used to begin all 1-Wire communication. The speed selection included in
the command code immediately takes effect. The response byte includes a code for the reaction on the
1-Wire bus (bits 0 and 1) and a code for the chip revision (bits 2 to 4).
Single Bit
The Single Bit command is used to generate a single time slot on the 1-Wire bus at the speed indicated by
bits 2 and 3. The type of the time slot (Write-0 or Write-1) is determined by the logic value of bit 4. A
Read Data time slot is identical to the Write-1 time slot. Bits 0 and 1 of the response byte transmitted by
the DS2480B at the end of the time slot reveal the value found on the 1-Wire bus when reading.
For a time slot without a subsequent strong pullup, bit 1 of the command must be set to 0. For a time slot
immediately followed by a strong pullup bit 1 must be set to 1. As soon as the strong pullup is over, the
device will send a second response byte, code EFh (read 1) or ECh (read 0), depending on the value
found on the 1-Wire bus when reading.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| DS2480S | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Serial 1.Wire Line Driver |
| DS2482-100 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Single-Channel 1-Wire Master |
| DS2482-100_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Channel 1-Wire Master |
| DS2482-101 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Channel 1-Wire Master with Sleep Mode |
| DS2482-101_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Single-Channel 1-Wire Master with Sleep Mode |
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