DS1977
COMMAND-SPECIFIC 1-WIRE COMMUNICATION PROTOCOL—COLOR
CODES
Master to slave
Slave to master
Strong Pullup
WRITE SCRATCHPAD, REACHING THE END OF THE SCRATCHPAD (CANNOT FAIL)
RST
PD
Select
WS
TA
<data to EOS>
CRC16
FF loop
WRITE SCRATCHPAD, NOT REACHING THE END OF THE SCRATCHPAD (CANNOT FAIL)
RST
PD
Select
WS
TA
<data>
RST
PD
READ SCRATCHPAD (CANNOT FAIL)
RST
PD
Select
RS
TA-E/S
<data to EOS>
CRC16
FF loop
COPY SCRATCHPAD WITH PASSWORD (SUCCESS)
RST
PD
Select
CPS
TA-E/S
<PW/dummy>
Strong Pullup
AA loop
COPY SCRATCHPAD WITH PASSWORD (FAIL TA-E/S OR PASSWORD)
RST
PD
Select
CPS
TA-E/S
<PW/dummy>
Strong Pullup
FF loop
READ MEMORY WITH PASSWORD (SUCCESS)
RST
PD
Select
RM
TA
<PW/dummy>
Strong Pullup
<data to EOP>
CRC16
Strong Pullup
<64 bytes>
CRC16
FF loop
Loop
READ MEMORY WITH PASSWORD (FAIL PASSWORD)
RST
PD
Select
RM
TA
<PW/dummy>
Strong Pullup
FF loop
24 of 29
相关PDF资料
DS1982-F5+ IBUTTON 1KBit ADD-ONLY F5
DS1985-F3+ IBUTTON 16KBit ADD-ONLY F3
DS1990A-F3+ IC IBUTTON SERIAL NUMBER F3
DS1990R-F5# IBUTTON SERIAL NUMBER F5
DS1993L-F5+ IBUTTON MEMORY 4KBit F5
DS1995L-F5+ IBUTTON MEMORY 16KBit F5
DS1996L-F5+ IBUTTON MEMORY 64KBit F5
DS9092K# KIT IBUTTON STARTER
相关代理商/技术参数
DS1977-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
DS1981U-F3-1125+ 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
DS1981U-F3-114C+ 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
DS1981U-F5-1124+ 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
DS1981U-F5-1126+ 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
DS1981U-F5-1130+ 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
DS1981U-F5-1136+ 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
DS1981U-F5-1139+ 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