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参数资料
| 型号： | DS2490Y |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/50页 |
| 文件大小： | 0K |
| 描述： | IC BRIDGE CLIP USB TO 1-W 24SOIC |
| 标准包装： | 1,000 |
| 应用： | USB |
| 接口： | 1 线 |
| 电源电压： | 3 V ~ 5.5 V |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
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DS2490
17 of 50
1-Wire Power-On Default Modes Table 11
Setting/Parameter
Power-On Default Value
Strong pullup to 5V
FALSE
Dynamic Speed Change
FALSE
1-Wire Bus Communication Speed
0x0 (Regular Speed, ~16kbps)
+5V Strong Pullup Duration
0x20 (512ms)
Pulldown Slew Rate Control
0x5 (0.83V/
s)
Write-1 Low Time
0x4 (8
s)
Data Sample Offset / Write-0 Recovery Time
0x4 (18
s)
CONTROL COMMANDS
DS2490 Control commands are used to control the processing of Communication commands/data and can
also be used to issue a device Reset. As listed in Table 12 there are 9 Control commands. The USB
control transfer setup packet coding to transmit these commands is detailed in Appendix 1. Like Mode
commands, Control commands are immediately processed by the DS2490 when they are received.
Control Command Set Summary Table 12
Command
Function
RESET DEVICE
Perform a hardware reset.
START EXECUTION
Start execution of Communication commands.
RESUME EXECUTION
Resume execution of Communication commands.
HALT EXECUTION WHEN
IDLE
Halt Communication command execution when the 1-Wire bus is
idle.
HALT EXECUTION WHEN
DONE
Halt further Communication command execution when the current
command execution completes.
FLUSH COMM CMDS
Clear unexecuted Communication commands from the command
buffer.
FLUSH DATA RCV BUFFER
Clear the data receive buffer (data from a 1-Wire device).
FLUSH DATA XMT BUFFER
Clear the data transmit buffer (data to a 1-Wire device).
GET COMM CMDS
Retrieve unexecuted Communication commands from the command
buffer.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 R | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 T | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
| DS24B33 TR | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1-Wire 4Kb EEPROM |
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