參數(shù)資料
型號: 25AA020A
廠商: Microchip Technology Inc.
英文描述: 2K SPI Bus Serial EEPROM
中文描述: 2K SPI總線串行EEPROM
文件頁數(shù): 9/28頁
文件大?。?/td> 362K
代理商: 25AA020A
2006 Microchip Technology Inc.
Preliminary
DS21833C-page 9
25AA020A/25LC020A
2.4
Write Enable (
WREN
) and Write
Disable (
WRDI
)
The 25XX020A 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
WP pin is brought low
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
0
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25AA020A/S16K 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, DIE in WAFFLE PK 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
25AA020A/W16K 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, WAFER 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
25AA020A/WF16K 功能描述:電可擦除可編程只讀存儲器 2K, 256 X 8, 1.8V SER EE, WAFER on FRAME 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
25AA020A_12 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K SPI Bus Serial EEPROM
25AA020A-E/MC 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:2K SPI Bus Serial EEPROM