參數(shù)資料
型號(hào): 25AA080A
廠商: Microchip Technology Inc.
英文描述: 8K SPI Bus Serial EEPROM
中文描述: 8K的SPI總線串行EEPROM
文件頁(yè)數(shù): 24/24頁(yè)
文件大小: 523K
代理商: 25AA080A
2003 Microchip Technology Inc.
DS21808B-page 9
25XX080A/B
2.4
Write Enable (WREN) and Write
Disable (WRDI)
The 25XX080A/B 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
34567
1
SI
high-impedance
SO
CS
01
0000
0
1
SCK
02
3
4
5
6
7
1
SI
high-impedance
SO
CS
01
0000
0
10
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