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参数资料
| 型号： | DS2490S |
| 英文描述： | USB to 1-Wire Bridge Chip |
| 中文描述： | USB与1 - Wire桥接芯片 |
| 文件页数： | 2/50页 |
| 文件大小： | 530K |
| 代理商： | DS2490S |
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DS2490
2 of 50
033199
SIGNAL SUMMARY
Table 1
SIGNAL NAME
VD
VPP
TYPE
PWR
PWR
FUNCTION
Power supply input for digital and 1-Wire functions. Range: 5.0
±
10%
Power supply input for 1-Wire EPROM programming. Range:
12V
±
0.25V
Power supply input for USB functions. Range: 3.3V
±
10% supply
regulated from USB supplied VBUS.
USB data - non-inverted of differential data pair.
USB data - inverted signal of differential data pair.
1-Wire Input/Output.
Reserved for future use. Must be tied to GND.
Suspend Output - buffered USB suspend state output from USB device
controller. When LOW the USB is in an active non-suspended state,
when HIGH the USB has entered a suspended state. This is an open
drain output and requires an external pullup.
Crystal input. Use a 12.0 MHz, fundamental mode, parallel resonant
crystal. A 12.0 MHz CMOS clock source may also be used.
Crystal output. Connect to other side of crystal 1 if used.
Ground reference and ground return for 1-Wire bus.
No connect. For factory use or reserved, do not connect to these pins.
VB
PWR
D+
D-
1-Wire
PMOD
I/O
I/O
I/O
I
O
SUSO
XI
I
XO
GND
NC
O
PWR
RELATED DOCUMENTS
This specification uses terms from and references or complies with the
Universal Serial Bus
Specification,
which may be obtained from the USB Implementers Forum web site: www.usb.org. The
USB specification is considered to be part of the DS2490 specification.
This specification uses several terms and acronyms associated with Dallas Semiconductor 1-Wire
products and technologies. For a detailed description of iButton technology and terms download the
Book of iButton Standards
from the Dallas Semiconductor iButton web site:
www.ibutton.com
.
DOCUMENT ORGANIZATION
The remainder of this document is organized into the following major sections:
SECTION
OVERVIEW
1-WIRE I/F CONTROLLER
USB COMMUNICATION
Summary
Device functional summary and application examples
Edge control and timing diagrams of 1-Wire signals
Configuration model, core and vendor-specific command
summaries
Commands used to configure 1-Wire interface operational
characteristics
Commands used to control 1-Wire communication
command processing
Commands used to communicate with an attached 1-Wire
device
Technique to obtain device status information
MODE COMMANDS
CONTROL COMMANDS
COMMUNICATION COMMANDS
DEVICE FEEDBACK
相关PDF资料 |
PDF描述 |
|---|---|
| DS2502-E64 | IEEE EUI-64 Node Address Chip |
| DS26334 | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| DS26334G | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| DS26334GN | 3.3V, 16-Channel, E1/T1/J1 Short and Long-Haul Line Interface Unit |
| DS26503 | T1/E1/J1 BITS Element |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 制造商全称:Maxim Integrated Products 功能描述:USB to 1-Wire Bridge Chip |
| DS2490X | 制造商:未知厂家 制造商全称:未知厂家 功能描述:USB to 1-Wire Bridge Chip(468.41 k) |
| DS2490X/T&R | 功能描述:接口 - 专用 RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
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