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AT25DF321 датащи(PDF) 19 Page - ATMEL Corporation

номер детали AT25DF321
подробное описание детали  32-megabit 2.7-volt Minimum SPI Serial Flash Memory
PDF  37 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT25DF321 датащи(HTML) 19 Page - ATMEL Corporation

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19
3669B–DFLASH–6/09
AT25DF321
The tables below detail the various protection and locking states of the device.
Note:
1. “n” represents a sector number
Table 9-4.
Software Protection Register States
WP
Sector Protection Register
n(1)
Sector
n(1)
X
(Don't Care)
0
Unprotected
1Protected
Table 9-5.
Hardware and Software Locking
WP
SPRL
Locking
SPRL Change Allowed
Sector Protection Registers
0
0
Can be modified from 0 to 1
Unlocked and modifiable using the
Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
01
Hardware
Locked
Locked
Locked in current state. Protect and
Unprotect Sector commands will be
ignored. Global Protect and
Unprotect cannot be performed.
1
0
Can be modified from 0 to 1
Unlocked and modifiable using the
Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
11
Software
Locked
Can be modified from 1 to 0
Locked in current state. Protect and
Unprotect Sector commands will be
ignored. Global Protect and
Unprotect cannot be performed.



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