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DS1922E
iButton High-Temperature Logger with
8KB Data-Log Memory
Command-Specific 1-Wire Communication Protocol—Color Codes
Master-to-Slave
Slave-to-Master
1-Wire Communication Examples
Write Scratchpad, Reaching the End of the Scratchpad (Cannot Fail)
RST PD Select WS
TA
<Data to EOS>
CRC-16
FF Loop
Read Scratchpad (Cannot Fail)
RST PD Select RS
TA-E/S <Data to EOS>
CRC-16
FF Loop
Copy Scratchpad with Password (Success)
RST PD Select CPS TA-E/S
<PW/Dummy>
Busy
AA Loop
Copy Scratchpad with Password (Fail TA-E/S or Password)
RST PD Select CPS TA-E/S
<PW/Dummy>
FF Loop
Read Memory with Password and CRC (Success)
RST PD Select RMC TA
<PW/Dummy>
<Data to EOP>
<32 Bytes>
CRC-16
CRC-16
FF Loop
Loop
Read Memory with Password and CRC (Fail Password or Address)
RST PD Select RMC TA
<PW/Dummy>
FF Loop
Clear Memory with Password
RST PD Select CM
<PW/Dummy>
FFh
FF Loop
To verify success, read the General Status register at address 0215h. If MEMCLR is 1, the command was
executed successfully.
Maxim Integrated
39
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相关代理商/技术参数
DS1922F-F5# 功能描述:iButton DS1922 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
DS1922L 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Temperature Logger iButton with 8KB Data-Log Memory
DS1922L_11 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Temperature Logger iButton with 8KB Data-Log Memory
DS1922L-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
DS1922L-F5# 功能描述:iButton Temp Logger Ibutton w/8Kb Datalog Mem 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
DS1922L-F5#A20 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
DS1922L-F5#A22 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