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DS1922E
iButton High-Temperature Logger with
8KB Data-Log Memory
1-Wire Communication Examples (continued)
Forced Conversion
RST PD Select FC
FFh
FF Loop
To read the result and to verify success, read the addresses 020Ch to 020Fh (results) and the device samples
counter at address 0223h to 0225h. If the count has incremented, the command was executed successfully.
Start Mission with Password
RST PD Select SM
<PW/Dummy>
FFh
FF Loop
To verify success, read the General Status register at address 0215h. If MIP is 1 and MEMCLR is 0, the command
was executed successfully.
Stop Mission with Password
RST PD Select STP
<PW/Dummy>
FFh
FF Loop
To verify success, read the General Status register at address 0215h. If MIP is 0, the command was executed
successfully.
Mission Example: Prepare
and Start a New Mission
Assumption: The previous mission has been ended by
using the Stop Mission command. Passwords are not
enabled.
Starting a mission requires three steps:
Step 1: Clear the data of the previous mission.
Step 2: Write the setup data to register page 1.
Step 3: Start the new mission.
Step 1: Clear the data of the previous mission.
With only a single device connected to the bus master,
the communication of step 1 looks like this:
40
MASTER MODE
Tx
Rx
Tx
Tx
Tx
Tx
Tx
Rx
DATA (LSB FIRST)
(Reset)
(Presence)
CCh
96h
<8 FFh bytes>
FFh
(Reset)
(Presence)
COMMENTS
Reset pulse
Presence pulse
Issue “Skip ROM ” command
Issue “Clear Memory” command
Send dummy password
Send dummy byte
Reset pulse
Presence pulse
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相关PDF资料
DS1922L-F5# IBUTTON TEMP LOGGER
DS1923-F5# IBUTTON TEMP/HUMIDITY LOGGER F5
DS1961S-F3# IBUTTON EEPROM 1KBit F3
DS1963S-F5+ IBUTTON MONETARY SHA-1
DS1971-F3+ IBUTTON EEPROM 256KBIT F3
DS1972-F3+ IBUTTON EEPROM 1KBit F3
DS1973-F3+ IBUTTON EEPROM 4KBit F3
DS1977-F5# IBUTTON EEPROM 32KBit F5
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