參數(shù)資料
型號(hào): 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(yè)數(shù): 10/16頁(yè)
文件大?。?/td> 102K
代理商: DS1977
Page 10
1/31/03
Figure 5-3. Memory Function Flow Chart, Part 3
69h
Read Mem.
[w/PW]
Master TX
64-Bits [Password]
Master
TX Reset
CRC OK
Master RX "1"s
DS1977 sets Memory
Address = (T15:T0)
Master RX Data Byte
from Memory Address or
FFh if Password Address
Master TX
TA1 (T7:T0), TA2 (T15:T8)
Password
Accepted
DS1977 Incre-
ments Address
Counter
End of Page
Master RX CRC16 of
Command, Address, Data
(1
Pass); CRC16 of Data
(Subsequent Passes)
End of
Memory
Master TX
Reset
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
N
Y
Decision made
by DS1977
Decision made
by Master
Master Activates
Strong Pull-up
DS1977 Incre-
ments Address
Counter
Master Activates
Strong Pull-up
Power
Fail
N
Y
Master
TX Reset
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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(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)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(chēng):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(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)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(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)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(chǔ)類(lèi)型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類(lèi)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