參數(shù)資料
型號(hào): 25LC040
廠商: Microchip Technology Inc.
英文描述: 4K SPI Bus Serial EEPROM(2.5~5.5V,2MHz,4K位,10M擦寫(xiě)周期,EEPROM)
中文描述: 4K的SPI總線串行EEPROM(2.5?5.5V之間,2MHz的,4K的位,1000萬(wàn)擦寫(xiě)周期和EEPROM)
文件頁(yè)數(shù): 8/12頁(yè)
文件大小: 240K
代理商: 25LC040
25AA040/25LC040/25C040
DS21204A-page 8
Preliminary
1997 Microchip Technology Inc.
3.4
Write Enable (WREN) and Write
Disable (WRDI)
The 25xx040 contains a write enable latch. See
Table 3-3 for the Write Protect Functionality Matrix.
This latch must be set before any write operation will
be completed internally. The WREN instruction will set
the latch, and the WRDI will reset the latch.
The following is a list of conditions under which the
write enable latch will be reset:
Power-up
WRDI instruction successfully executed
WRSR instruction successfully executed
WRITE instruction successfully executed
WP line is low
FIGURE 3-4:
WRITE ENABLE SEQUENCE
FIGURE 3-5:
WRITE DISABLE SEQUENCE
SCK
0
2
3
4
5
6
7
1
SI
high impedance
SO
CS
0
1
0
0
0
0
0
1
SCK
0
2
3
4
5
6
7
1
SI
high impedance
SO
CS
0
1
0
0
0
0
0
1
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
25LC040/P 功能描述:電可擦除可編程只讀存儲(chǔ)器 512x8 2.5V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC040/P 制造商:Microchip Technology Inc 功能描述:IC EEPROM SERIAL 4K 25LC040 DIP8
25LC040/S 制造商:Microchip Technology Inc 功能描述:4K, 512 X 8 , 2.5V SER EE, DI - Gel-pak, waffle pack, wafer, diced wafer on film
25LC040/SN 功能描述:電可擦除可編程只讀存儲(chǔ)器 512x8 - 2.5V RoHS:否 制造商:Atmel 存儲(chǔ)容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時(shí)鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8
25LC040/SN 制造商:Microchip Technology Inc 功能描述:EEPROM SERIAL 4K 25LC040 SOIC8