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参数资料
| 型号： | DS1977-F5# |
| 厂商： | Maxim Integrated |
| 文件页数： | 26/29页 |
| 文件大小： | 0K |
| 描述： | IBUTTON EEPROM 32KBit F5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| RoHS指令信息： | IButton RoHS Compliance Plan |
| 标准包装： | 14 |
| 系列： | iButton® |
| 存储容量： | 32KB |
| 存储器类型： | EEPROM |
| 产品目录页面： | 1431 (CN2011-ZH PDF) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页当前第26页第27页第28页第29页
DS1977
With only a single DS1977 connected to the bus master, the communication is as follows:
MASTER MODE
DATA (LSB FIRST)
COMMENTS
Step 1
TX
RX
TX
TX
TX
(Reset)
(Presence)
CCh
0Fh
C0h
Reset Pulse
Presence Pulse
Issue Skip ROM Command
Issue Write Scratchpad Command
TA1, Target Address = C0h (Password Start
Address)
TX
TX
TX
TX
RX
7Fh
<Read Password>
<Full-Access Password>
(Reset)
(Presence)
TA2, Target Address = 7FC0h
Write 8-Byte Read Password to Scratchpad
Write 8-Byte Full-Access Password to
Scratchpad
Reset Pulse
Presence Pulse
Step 2
TX
TX
RX
RX
RX
RX
CCh
AAh
C0h
7Fh
0Fh
<16 Bytes>
Issue Skip ROM Command
Issue Read Scratchpad Command
Read TA1, Target Address = C0h
Read TA2, Target Address = 7FC0h
Read E/S-Byte
Read Both Passwords from Scratchpad and
Compare to what was Written
TX
RX
(Reset)
(Presence)
Reset Pulse
Presence Pulse
Step 3
TX
TX
CCh
99h
Issue Skip ROM Command
Issue Copy Scratchpad with Password
Command
TX
TX
TX
TX
(—)
RX
TX
RX
C0h
7Fh
0Fh
<8 Bytes>
(Activate Strong Pullup for t PROG )
AAh
(Reset)
(Presence)
TA1, Target Address = C0h
TA2, Target Address = 7FC0h
E/S-byte
Transmit 8 Dummy Bytes as Password,
Because Passwords are Not Yet Enabled
Supply Power for Programming
Read to Check for Programming Success;
AAh Means Success
Reset Pulse
Presence Pulse
Step 4
TX
TX
TX
CCh
C3h
C0h
Issue Skip ROM Command
Issue Verify Password Command
TA1, Target Address = C0h (Read Password
Address)
TX
TX
(—)
RX
TX
RX
TX
TX
TX
7Fh
<Read Password>
(Activate Strong Pullup for t PROG )
AAh
(Reset)
(Presence)
CCh
C3h
C8h
26 of 29
TA2, target address = 7FC0h
Transmit Read Password
Supply Power for Password Comparison
Check for Password Match; AAh = Match
Reset Pulse
Presence Pulse
Issue Skip ROM Command
Issue Verify Password Command
TA1, Target Address = C8h (Full-Access
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1977-F5# | 功能描述:iButton Password-Protected 32KB EEPROM 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 |
| 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 |
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