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參數(shù)資料
| 型號： | DS2490Y |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 18/50頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 標(biāo)準(zhǔn)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
25 of 50
Command parameters:
1 byte specifying number of couplers that need to be activated to set-up
the path to the target device.
EP2 data:
Length
Description
9 bytes per
level
8 bytes ROM ID of the coupler to be activated
followed by the Smart-On command code for either
the main or auxiliary 1-Wire coupler output.
EP3 data:
Length
Description
1 byte
Number of couplers successfully activated; should be
the same as the number of levels.
Result Register:
Code
Condition
CMP, SH,
NRS
ICP = 0, NTF = 0 or 1: An error condition is detected.
0x00
ICP = 0, NTF = 1: no error detected
None
ICP = 0, NTF = 0: no error detected
None
ICP = 1
WRITE SRAM PAGE—This command is used to write data to the scratchpad of an SRAM device and
optionally check the CRC. To copy the data to its final memory location, it is required to send the READ
STRAIGHT command with a “copy scratchpad” preamble and a 0 block size. Embedded command bit
DT = 1 activates the CRC16 generator. This command is also applicable to the Write IPR function of the
Crypto iButton if embedded command bit CIB = 1. To write a partial page the page size parameter and
the target address need to be set accordingly. The EP2 FIFO must be pre-filled with preamble and SRAM
data before command execution. Additionally, for data page sizes greater then the EP2 FIFO size, the
FIFO content status must be monitored by host SW so that additional data can be sent to the FIFO when
necessary.
Command parameters:
1 byte specifying page size. This specifies the number of bytes to be
sent to the 1-Wire device following a 2- or 3-byte preamble. This
number is typically identical to the page size; a value of 0x00 indicates a
256-byte page.
EP2 data:
Length
Description
If CIB = 0: 3-bytes + page
size
Preamble and data bytes to be sent to the 1-Wire
SRAM device. 3-byte preamble: 1-Wire command
code, TA1, TA2 (typical).
If CIB = 1: 2-bytes + page
size
Preamble and data bytes to be sent to the 1-Wire
SRAM device. 2-byte preamble: 1-Wire command
code, length information.
EP3 data:
None
Result Register:
Code
Condition
CRC
ICP = 0, NTF = 0 or 1: and an error condition (only if
DT = 1).
0x00
ICP = 0, NTF = 1: no error detected
None
ICP = 0, NTF = 0: no error detected
None
ICP = 1
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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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