參數(shù)資料
型號: MX25U8035ZUI-25G
廠商: MACRONIX INTERNATIONAL CO LTD
元件分類: PROM
英文描述: 2M X 4 FLASH 1.8V PROM, PDSO8
封裝: 4 X 4 MM, 0.60 MM HEIGHT, 0.80 MM PITCH, ROHS COMPLIANT, MO-252, USON-8
文件頁數(shù): 2/56頁
文件大?。?/td> 2467K
代理商: MX25U8035ZUI-25G
10
MX25U4035
MX25U8035
P/N: PM1394
REV. 1.1, JUN. 30, 2009
DATA PROTECTION
The MX25U4035/MX25U8035 is designed to offer protection against accidental erasure or programming caused
by spurious system level signals that may exist during power transition. During power up the device automatically
resets the state machine in the standby mode. In addition, with its control register architecture, alteration of the
memory contents only occurs after successful completion of specific command sequences.
Valid command length checking: The command length will be checked whether it is at byte base and completed
on byte boundary.
Write Enable (WREN) command: WREN command is required to set the Write Enable Latch bit (WEL) before
other command to change data. The WEL bit will return to reset stage under following situation:
- Power-up
- Write Disable (WRDI) command completion
- Write Status Register (WRSR) command completion
- Page Program (PP) command completion
- Continuously Program mode (CP) instruction completion
- Sector Erase (SE) command completion
- Block Erase 32KB (BE32K) command completion
- Block Erase (BE) command completion
- Chip Erase (CE) command completion
Deep Power Down Mode: By entering deep power down mode, the flash device also is under protected from
writing all commands except Release from deep power down mode command (RDP) and Read Electronic Sig-
nature command (RES).
Advanced Security Features: there are some protection and security features which protect content from inad-
vertent write and hostile access.
I. Block lock protection
- The Software Protected Mode (SPM) use (BP3, BP2, BP1, BP0) bits to allow part of memory to be protected
as read only. The protected area definition is shown as table of "Protected Area Sizes", the protected areas are
more flexible which may protect various area by setting value of BP0-BP3 bits.
Please refer to table of "protected area sizes".
- The Hardware Protected Mode (HPM) use WP#/SIO2 to protect the (BP3, BP2, BP1, BP0) bits and SRWD bit.
If the system goes into four I/O read mode, the feature of HPM will be disabled.
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