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參數(shù)資料
| 型號： | DS2490Y |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 35/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 標準包裝： | 1,000 |
| 應用： | 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） |
| 供應商設備封裝： | 24-SOIC W |
| 包裝： | 管件 |
| 安裝類型： | 表面貼裝 |
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DS2490
40 of 50
BIT NAME
DESCRIPTION
PST
PST = 1 continuously generate 1-Wire Reset sequences until a presence pulse is
discovered.
PST = 0 generate only one 1-Wire Reset sequence.
R
R = 1 performs a read function.
R = 0 performs a write function.
RST
RST = 1 inserts a 1-Wire Reset before executing the command.
RST = 0 no 1-Wire Reset inserted.
RTS
RTS = 1 returns the discrepancy information to the host if SM = 1 and there are more
devices than could be discovered in the current pass.
RTS = 0 does not return discrepancy information.
SE
SE = 1 enable the speed change on the 1-Wire bus.
SE = 0 disable the speed change on the 1-Wire bus.
SM
SM = 1 searches for and reports ROM Ids without really accessing a particular device.
SM = 0 makes a “Strong Access” to a particular device.
SPU
SPU = 1 inserts a strong pullup to 5V after a Bit or Byte or Block I/O or Do & Release
command.
SPU = 0 no strong pullup.
Z
Z = 1 checks if the 0-bits in the byte to be written are 0-bits in the byte read back form
the device.
Z = 0 checks if the byte to be written is identical to the one read back from the device.
COMMUNICATION COMMANDS
SET DURATION
Setup Packet Encoding:
bmRequestType
0x40
bRequest
COMM_CMD
wValue
byte 2
byte 1
byte 2:
0
NTF
ICP
0
byte 1:
0
1
0
1
IM
wIndex
byte 2
byte 1
byte 2 – 0x00 (unused)
byte 1 – new duration:
Unsigned 8-bit binary number specifying the new duration. See
MODE CONTROL section for byte bit weighting and additional
format information.
wLength
0x0000
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相關代理商/技術參數(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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