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DS28EC20: 20Kb 1-Wire EEPROM
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—LEGEND
SYMBOL
RST
PD
Select
WS
RS
CPS
RM
ERM
TA
TA-E/S
<data to EOS>
<data to EOM>
<data to EOP>
CRC16
FF loop
AA loop
Programming
DESCRIPTION
1-Wire reset pulse generated by master.
1-Wire presence pulse generated by slave.
Command and data to satisfy the ROM function protocol.
Command "Write Scratchpad".
Command "Read Scratchpad".
Command "Copy Scratchpad".
Command "Read Memory".
Command "Extended Read Memory".
Target address TA1, TA2.
Target address TA1, TA2 with E/S byte.
Transfer of as many bytes as needed to reach the end of the scratchpad for a given
target address.
Transfer of as many data bytes as are needed to reach the end of the memory.
Transfer of as many data bytes as are needed to reach the end of the page for a given
target address.
Transfer of an inverted CRC16.
Indefinite loop where the master reads FF bytes.
Indefinite loop where the master reads AA bytes.
Data transfer to EEPROM; no activity on the 1-Wire bus permitted during this time.
COMMAND-SPECIFIC 1-Wire COMMUNICATION PROTOCOL—COLOR CODES
Master to Slave
Slave to Master
Programming
WRITE SCRATCHPAD (CANNOT FAIL)
RST
PD
Select
WS
TA
<Data to EOS>
CRC16
FF Loop
READ SCRATCHPAD
RST
PD
Select
RS
TA-E/S
<Data to EOS>
CRC16
FF Loop
COPY SCRATCHPAD (SUCCESS)
RST
PD
Select
CPS
TA-E/S
Programming
AA Loop
COPY SCRATCHPAD (BS = 1 OR PF = 1 OR COPY PROTECTED)
RST
PD
Select
CPS
TA-E/S
FF Loop
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相关代理商/技术参数
DS28EC20-224-BB+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
DS28EC20P 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:DS28EC20_1203
DS28EC20P T 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:DS28EC20_1203
DS28EC20P+ 功能描述:电可擦除可编程只读存储器 20Kb 1-Wire 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
DS28EC20P+T 功能描述:电可擦除可编程只读存储器 20Kb 1-Wire 电可擦除可编程只读存储器 RoHS:否 制造商:Atmel 存储容量:2 Kbit 组织:256 B x 8 数据保留:100 yr 最大时钟频率:1000 KHz 最大工作电流:6 uA 工作电源电压:1.7 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8
DS28EC20P-224-BB+T 制造商:Maxim Integrated Products 功能描述:- Tape and Reel
DS28EC20Q-A5A-5A+T 制造商:Maxim Integrated Products 功能描述:20KB 1-WIRE EEPROM - Tape and Reel
DS28EC20Q-A5A-5A+W 制造商:Maxim Integrated Products 功能描述:20KB 1-WIRE EEPROM - Rail/Tube