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參數(shù)資料
| 型號： | DS2490Y |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 標準包裝： | 1,000 |
| 應(yīng)用： | USB |
| 接口： | 1 線 |
| 電源電壓： | 3 V ~ 5.5 V |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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DS2490
16 of 50
Flexible Speed Write-1 Low Time Codes Table 9
Code
Nominal Write-1 Low Time
0x0
4
s
0x1
5
s
0x2
6
s
0x3
7
s
0x4
8
s
0x5
9
s
0x6
10
s
0x7
11
s
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 10.
The numbers in the table represent nominal values. The nominal DSO/W0R time for Regular speed is
16
s, for Overdrive speed the Data Sample Offset is 1s and the Write-0 Recovery Time is 3s. The
DS2490 decodes the three LSBs of the DSO/W0R code. Sending a code other than the defined values in
Table 10 will result in undefined behavior. The DS2490 DSO/W0R power-up default value for Flexible
speed is 18
s.
Flexible Speed DSO/ W0R Time Codes Table 10
Code
Nominal DSO/W0R Time
0x0
10
s
0x1
12
s
0x2
14
s
0x3
16
s
0x4
18
s
0x5
20
s
0x6
22
s
0x7
24
s
0x8..0xF
reserved
Power-on Default Mode Values
Table 11 summarizes the power-up default values for the various DS2490 mode registers. Note that the
power-up default communication speed is regular and several of the values listed in Table 11 are specific
to Flexible speed operation. To change a value the appropriate Mode or Communication command must
be sent to the device.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2490Y+ | 制造商:Maxim Integrated Products 功能描述:USB TO 1-WIRE BRIDGE 24SOIC W - Tape and Reel |
| DS24B33 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
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