参数资料
型号: STM8AH5168TAX
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 24 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 7 MM, ROHS COMPLIANT, LQFP-48
文件页数: 20/112页
文件大小: 2161K
代理商: STM8AH5168TAX
STM8AF61xx, STM8AH61xx, STM8AF51xx, STM8AH51xx
Product features
Doc ID 14395 Rev 5
5.2
Non-volatile memory
32 Kbytes to 128 Kbytes of single voltage program Flash memory
Up to 2 Kbytes true (not emulated) data EEPROM
Read while write: Writing in the data memory is possible while executing code in the
program memory
The device setup is stored in a user option area in the non volatile memory
5.2.1
Architecture
The memory is organized in blocks of 128 bytes each
Read granularity: 1 word = 4 bytes
Write/erase granularity: 1 word (4 bytes) or 1 block (128 bytes) in parallel
Writing, erasing, word and block management is handled automatically by the memory
interface.
5.2.2
Write protection (WP)
Write protection in application mode is intended to avoid unintentional overwriting of the
memory. The write protection can be removed temporarily by executing a specific sequence
in the user software.
5.2.3
Protection of user boot code (UBC)
If the user chooses to update the program memory using a specific boot code to perform in
application programming (IAP), this boot code needs to be protected against unwanted
modification.
In the STM8A a memory area of up to 128 Kbytes can be protected from overwriting at user
option level. Other than the standard write protection, the UBC protection can exclusively be
modified via the debug interface, the user software cannot modify the UBC protection status.
The UBC memory area contains the reset and interrupt vectors and its size can be adjusted
in increments of 512 bytes by programming the UBC and NUBC option bytes
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