參數(shù)資料
型號: 25LC256T-ISTG
廠商: Microchip Technology Inc.
元件分類: EEPROM
英文描述: 256K SPI Bus Serial EEPROM
中文描述: 256K SPI總線串行EEPROM
文件頁數(shù): 9/26頁
文件大?。?/td> 367K
代理商: 25LC256T-ISTG
2003 Microchip Technology Inc.
Preliminary
DS21822C-page 9
25AA256/25LC256
2.4
Write Enable (
WREN
) and Write
Disable (
WRDI
)
The 25XX256 contains a write enable latch. See
Table 2-4 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
FIGURE 2-4:
WRITE ENABLE SEQUENCE (
WREN
)
FIGURE 2-5:
WRITE DISABLE SEQUENCE (
WRDI
)
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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25LC256X-E/ST 功能描述:電可擦除可編程只讀存儲器 256k 32KX8 2.5V SER EE EXT RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率: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
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