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參數(shù)資料
| 型號(hào)： | DS2490S |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Bus Controller |
| 英文描述： | UNIVERSAL SERIAL BUS CONTROLLER, PDSO24 |
| 封裝： | 0.300 INCH, SO-24 |
| 文件頁數(shù)： | 8/51頁 |
| 文件大小： | 444K |
| 代理商： | DS2490S |
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DS2490
16 of 50
values. The nominal pulldown slew rate for Regular speed is 0.83V/
μs and for Overdrive speeds it is
15V/
μs. The DS2490 decodes the three LSBs of the slew rate code. Sending a code other than the defined
values in Table 9 will result in undefined behavior. The DS2490 pulldown slew rate power-up default
value for Flexible speed is 0.83V/
μs.
Flexible Speed Pulldown Slew Rate Codes Table 9
Code
Nominal Pulldown slew rate
0x0
15V/
μs
0x1
2.20V/
μs
0x2
1.65V/
μs
0x3
1.37V/
μs
0x4
1.10V/
μs
0x5
0.83V/
μs
0x6
0.70V/
μs
0x7
0.55V/
μs
0x8..0xF
reserved
WRITE-1 LOW TIME—This command is used to select the Write-1 low time for 1-Wire bus Flexible
speed operation; eight Write-1 low time durations are possible. The parameter codes to select the desired
or required low time are as listed in Table 10. The low time numbers in the table represent nominal
values. The nominal Write-1 Low Time for Regular speed is 8
μs, at Overdrive speed it is 1μs. The
DS2490 decodes the three LSBs of the low time code. Sending a code other than the defined values in
Table 10 will result in undefined behavior. The DS2490 Write-1 Low Time power-up default value for
Flexible speed is 12
μs.
Flexible Speed Write-1 Low Time Codes Table 10
Code
Nominal Write-1 Low Time
0x0
8
μs
0x1
9
μs
0x2
10
μs
0x3
11
μs
0x4
12
μs
0x5
13
μs
0x6
14
μs
0x7
15
μs
0x8..0xF
reserved
DSOW0 RECOVERY TIME—This command is used to select the Data Sample Offset (tDSO) / Write-0
recovery (tW0R) time (DSO/W0R) for 1-Wire bus Flexible Speed operation; eight DSO/W0R times are
possible. The parameter codes to select the desired or required recovery time are as listed in Table 11.
The numbers in the table represent nominal values. The nominal DSO/W0R time for Regular speed is
3
μs, for Overdrive speed the Data Sample Offset is 1μs and the Write-0 Recovery Time is 3μs. The
DS2490 decodes the three LSBs of the DSO/W0R code. Sending a code other than the defined values in
相關(guān)PDF資料 |
PDF描述 |
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| DS2502S | 128 X 8 OTPROM, PDSO8 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2490S+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Rail/Tube 制造商:Maxim Integrated Products 功能描述:USB 1-W BRIDGE CHIP 24-SO LF 制造商:Maxim Integrated Products 功能描述:Bulk |
| DS2490S+T&R | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS2490S+TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip |
| DS2490X | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:USB to 1-Wire Bridge Chip(468.41 k) |
| DS2490X/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 |
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