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參數(shù)資料
| 型號： | EVAL-ADUC832QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 42/92頁 |
| 文件大小： | 0K |
| 描述： | KIT DEV FOR ADUC832 QUICK START |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標準包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC832 |
| 所含物品： | 評估板，線纜，電源，軟件和文檔 |
| 其它名稱： | EVAL-ADUC832QS EVAL-ADUC832QS-ND |
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Data Sheet
ADuC832
Rev. B | Page 47 of 92
FLASH/EE PROGRAM MEMORY SECURITY
The ADuC832 facilitates three modes of Flash/EE program
memory security. These modes can be independently activated,
restricting access to the internal code space. These security modes
can be enabled as part of serial download protocol as described
in Technical Note uC004 or via parallel programming. The
security modes available on the ADuC832 are described as
follows.
Lock Mode
This mode locks the code memory, disabling parallel
programming of the program memory. However, reading the
memory in parallel mode and reading the memory via a MOVC
command from external memory is still allowed. This mode is
deactivated by initiating a code-erase command in serial
download or parallel programming modes.
Secure Mode
This mode locks code in memory, disabling parallel programming
(program and verify/read commands) as well as disabling the
execution of a MOVC instruction from external memory, which
attempts to read the op codes from internal memory. Read/write of
internal data Flash/EE from external memory is also disabled. This
mode is deactivated by initiating a code-erase command in serial
download or parallel programming modes.
Serial Safe Mode
This mode disables serial download capability on the device. If
serial safe mode is activated and an attempt is made to reset the
part into serial download mode, that is, RESET asserted and
deasserted with PSEN low, the part interprets the serial
download reset as a normal reset only. It therefore does not
enter serial download mode but only executes a normal reset
sequence. Serial safe mode can only be disabled by initiating a
code-erase command in parallel programming mode.
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