- 您现在的位置：买卖IC网 > Datasheet目录222 > DS1977-F5# (Maxim Integrated)IBUTTON EEPROM 32KBit F5 Datasheet资料下载
参数资料
| 型号： | DS1977-F5# |
| 厂商： | Maxim Integrated |
| 文件页数： | 27/29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页第26页当前第27页第28页第29页
DS1977
MASTER MODE
TX
TX
(—)
RX
TX
RX
DATA (LSB FIRST)
7Fh
<Full-Access Password>
(Activate Strong Pullup for t PROG )
AAh
(Reset)
(Presence)
COMMENTS
Password Address)
TA2, Target Address = 7FC8h
Transmit Full-Access Password
Supply Power for Password Comparison
Check for Password Match; AAh = Match
Reset Pulse
Presence Pulse
Step 5
TX
TX
TX
CCh
0Fh
D0h
Issue Skip ROM Command
Issue Write Scratchpad Command
TA1, Target Address = D0h (Password
Control Register Address)
TX
TX
TX
RX
TX
TX
RX
RX
RX
RX
TX
RX
TX
TX
TX
TX
TX
TX
(—)
RX
TX
RX
7Fh
AAh
(Reset)
(Presence)
CCh
AAh
D0h
7Fh
10h
AAh
(Reset)
(Presence)
CCh
99h
D0h
7Fh
10h
<8 Bytes>
(Activate Strong Pullup for t PROG )
AAh
(Reset)
(Presence)
TA2, Target Address = 7FD0h
Write Password Enabling Pattern
Reset Pulse
Presence Pulse
Issue Skip ROM Command
Issue Read Scratchpad Command
Read TA1, Target Address = D0h
Read TA2, Target Address = 7FD0h
Read E/S-Byte
Verify Password Enabling Pattern
Reset Pulse
Presence Pulse
Issue Skip ROM Command
Issue Copy Scratchpad with Password
Command
TA1, Target Address = D0h
TA2, Target Address = 7FD0h
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
Instead of always using Skip ROM, one could use Read ROM first to learn the device's ROM identification (see
Example 1). For the next access one would use the Match ROM command and send the correct ROM identification
to address the device. Subsequent accesses could use the Resume command. This procedure ensures that
devices cannot be swapped during a communication session.
EXAMPLE 3
Task : write 10 data bytes starting at address 00A0h in page 2; read memory pages 2 and 3. The device has
passwords installed and activated. This task is broken into the following steps:
1. Write data to scratchpad
2. Read Scratchpad
3. Copy scratchpad
4. Read the entire memory page 3
5. Continue reading through the end of page 4
27 of 29
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 |
发布紧急采购，3分钟左右您将得到回复。