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參數(shù)資料
| 型號： | DS2480B+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LINE DRVR W/SENSOR 1-W 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | 1-Wire Communications Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 100 |
| 類型： | 線路驅(qū)動器，發(fā)射器 |
| 驅(qū)動器/接收器數(shù)： | 1/0 |
| 規(guī)程： | RS232 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1429 (CN2011-ZH PDF) |
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DS2480B
Maxim Integrated........................................................................................................................................................................................... 22
The minimum duration of a strong pullup of infinite duration strongly depends on the baud rate of the
communication between host and DS2480B. The host must first receive the response byte of the Single
Bit command, react to it and then transmit the termination command. Neglecting the host’s response time,
the shortest duration of an infinite strong pullup therefore is 173.6s at 115.2kbps, 347.2s at 57.6kbps,
1.04ms at 19.2kbps, and 2.08ms at 9.6kbps.
SOFTWARE DRIVER EXAMPLES
The DS2480B requires a software driver that translates the activities to be generated on the 1-Wire bus
into the appropriate commands. The examples below cover typical situations, such as reading the ROM,
writing to the scratchpad of a Memory iButton, reading the memory of a Memory iButton, programming
an Add-Only iButton EPROM and performing a temperature conversion with the DS1920 temperature
iButton. An example for the use of the Search Accelerator is included in the Search Accelerator section
found earlier in this document.
The DS2480B command codes used in these examples are valid for standard speed and will work
properly on short 1-Wire buses (<10m). The response byte on the reset command assumes a normal
presence pulse, no alarm or short.
The DS2480B includes a 1-byte buffer that stores a byte received from the host while the previous byte is
being translated into activity on the 1-Wire bus. For this reason the host may send another byte even
without having received the response byte. Sending bytes faster than they can be translated into 1-Wire
activities may result in loss of data and/or synchronization and therefore should be avoided.
READ ROM SEQUENCE
Action Sequence
Host TX
Host RX
Generate Reset Pulse
C1
CD or ED
Set Data Mode
E1
(nothing)
Read ROM Command
33
(as sent)
Read ROM ID (8 bytes)
FF (x8)
ROM ID
Set Command Mode
E3
(nothing)
Generate Reset Pulse
C1
CD or ED
WRITE SCRATCHPAD SEQUENCE
Write 2 bytes to scratchpad at memory locations 16h and 17h
Action Sequence
Host TX
Host RX
Generate Reset Pulse
C1
CD or ED
Set Data Mode
E1
(nothing)
Skip ROM Command
CC
Write Scratchpad Command
0F
(as sent)
Starting Address TA1
16
(as sent)
Starting Address TA2
00
(as sent)
Write to the Scratchpad
(2 bytes)
(as sent)
Set Command Mode
E3
(nothing)
Generate Reset Pulse
C1
CD or ED
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2480B | 制造商:Maxim Integrated Products 功能描述:IC SERIAL LINE DRIVER 2480 SOIC8 |
| DS2480B/T&R | 功能描述:緩沖器和線路驅(qū)動器 RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DS2480B+ | 功能描述:緩沖器和線路驅(qū)動器 Serial - 1-Wire Line Driver RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| DS2480B+R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver |
| DS2480B+T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Serial to 1-Wire Line Driver |
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