參數(shù)資料
型號: DS1977
英文描述: 32KB EEPROM iButton
中文描述: 密碼保護(hù)的32K字節(jié)EEPROM iButton
文件頁數(shù): 12/16頁
文件大?。?/td> 102K
代理商: DS1977
Page 12
1/31/03
Figure 6-1. ROM Function Flow Chart, Part 1
Bus Master TX
ROM Function
Command
33h
Read ROM
Command
DS1977 TX
Family Code
(1 Byte)
DS1977 TX
Serial Number
(6 Bytes)
DS1977 TX
CRC Byte
55h
Match ROM
Command
Bus Master
TX Bit 0
Bit 0
Match
Bus Master
TX Bit 1
Bit 1
Match
Bus Master
TX Bit 63
Bit 63
Match
F0h
Search ROM
Command
Bit 0
Match
DS1977 TX Bit 0
DS1977 TX Bit 0
Bus Master TX Bit 0
DS1977 TX Bit 1
DS1977 TX Bit 1
Bus Master TX Bit 1
DS1977 TX Bit 63
DS1977 TX Bit 63
Bus Master TX Bit 63
Bit 1
Match
Bit 63
Match
From Memory
Function Flow Chart
Bus Master TX
Reset Pulse
DS1977 TX
Presence Pulse
To Memory
Function Flow
Chart
N
Y
N
N
Y
Y
Y
N
N
N
N
Y
Y
Y
Y
Y
N
N
Bus Master
TX Reset
Y
N
All data is LSB first
OD Reset
Pulse
OD=0
N
Y
RC=0
RC=0
RC=0
RC=1
RC=1
RFA
RFB
CCh
Skip ROM
Command
N
Y
RC=0
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1977-F5 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1977-F5- 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Password-Protected 32KB EEPROM iButton
DS1977-F5# 功能描述:iButton Password-Protected 32KB EEPROM iButton RoHS:否 存儲類型:SRAM 存儲容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1977-F5+ 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1981U-F3-1125+ 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated