DS1904
ROM FUNCTIONS FLOW CHART Figure 7
Master TX
Reset Pulse
DS1904 TX
Presence Pulse
Master TX ROM
Function Command
33H
Read ROM
Command
?
N
55H
Match ROM
Command
?
N
F0H
Search ROM
Command
?
N
CCH
Skip ROM
Command
?
N
Y
DS1904 TX
Family Code
1 Byte
Y
Master TX Bit 0
Y
DS1904 TX Bit 0
DS1904 TX Bit 0
Master TX Bit 0
Y
DS1904 TX
Serial Number
6 Bytes
Bit 0
Match ?
Y
Master TX Bit 1
Bit 1
Match ?
Y
N
N
N
N
Bit 0
Match ?
Y
DS1904 TX Bit 1
DS1904 TX Bit 1
Master TX Bit 1
Bit 1
Match ?
Y
DS1904 TX Bit 63
DS1904 TX
CRC Byte
Master TX Bit 63
DS1904 TX Bit 63
Master TX Bit 63
Bit 63
Match ?
Y
N
N
Bit 63
Match ?
Y
Master TX Control
Function Command
(SEE FIGURE 5)
8 of 13
相关PDF资料
DS1920-F5+ IBUTTON TEMPERATURE F5
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相关代理商/技术参数
DS1904L-F5+ 功能描述:iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1920 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Temperature iButton
DS1920+F5 制造商:Maxim Integrated Products 功能描述:TEMP IBTN 2PIN F5 MICROCAN - Rail/Tube
DS1920-F3 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Temperature iButton
DS1920-F5 功能描述:iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1920-F5+ 功能描述:iButton Temperature iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated
DS1921 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Resolution Thermochron iButton
DS1921G 制造商:未知厂家 制造商全称:未知厂家 功能描述:Thermochron iButton