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ST10F271B 数据表(PDF) 27 Page - STMicroelectronics |
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ST10F271B 数据表(HTML) 27 Page - STMicroelectronics |
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27 / 180 page  ST10F271B/ST10F271E Internal Flash memory 27/180 mapping. Accesses to this address range will send back the content of the Flash cell (by default FFFFh, blank value when the device is delivered) 2 Accesses to the area will send back the value 009Bh. 5.2.2 Modules structure The IFLASH module is composed by a bank (Bank 0) of 256 Kbyte of Program Memory divided in 8 sectors (B0F0...B0F7). Bank 0 contains also a reserved sector named Test- Flash. The Addresses from 0x08 0000 to 0x08 FFFF are reserved for the Control Register Interface and other internal service memory space used by the Flash Program/Erase controller. The following tables show the memory mapping of the Flash when it is accessed in read mode ( Table 4: Flash modules sectorization (Read operations)), and when accessed in write or erase mode ( Table 5: Flash modules sectorization (Write operations or with ROMS1=’1’ or BootStrap mode)): note that with this second mapping, the first four banks are remapped into code segment 1 (same as obtained setting bit ROMS1 in SYSCON register). Table 4. Flash modules sectorization (Read operations) Bank Description Addresses Size ST10 Bus size B0 Bank 0 Flash 0 (B0F0) 0x0000 0000 - 0x0000 1FFF 8 KB 32-bit (I-BUS) Bank 0 Flash 1 (B0F1) 0x0000 2000 - 0x0000 3FFF 8 KB Bank 0 Flash 2 (B0F2) 0x0000 4000 - 0x0000 5FFF 8 KB Bank 0 Flash 3 (B0F3) 0x0000 6000 - 0x0000 7FFF 8 KB Bank 0 Flash 4 (B0F4) 0x0001 8000 - 0x0001 FFFF 32 KB Bank 0 Flash 5 (B0F5) 0x0002 0000 - 0x0002 FFFF 64 KB Bank 0 Flash 6 (B0F6) (1) 1. IFlash sectors B0F6 and B0F7 are not physically disabled. The corresponding area must be reserved by the application mapping. Accesses to this area will send back the content of the Flash cell ( by default FFFFh: the erased state, if not modified by user). 0x0003 0000 - 0x0003 FFFF 64 KB Bank 0 Flash 7 (B0F7) (1) 0x0004 0000 - 0x0004 FFFF 64 KB Table 5. Flash modules sectorization (Write operations or with ROMS1=’1’ or BootStrap mode) Bank Description Addresses Size ST10 Bus size B0 Bank 0 Test-Flash (B0TF) 0x0000 0000 - 0x0000 1FFF 8 KB 32-bit (I-BUS) Bank 0 Flash 0 (B0F0) 0x0001 0000 - 0x0001 1FFF 8 KB Bank 0 Flash 1 (B0F1) 0x0001 2000 - 0x0001 3FFF 8 KB Bank 0 Flash 2 (B0F2) 0x0001 4000 - 0x0001 5FFF 8 KB Bank 0 Flash 3 (B0F3) 0x0001 6000 - 0x0001 7FFF 8 KB Bank 0 Flash 4 (B0F4) 0x0001 8000 - 0x0001 FFFF 32 KB Bank 0 Flash 5 (B0F5) 0x0002 0000 - 0x0002 FFFF 64 KB Bank 0 Flash 6 (B0F6) (1) 0x0003 0000 - 0x0003 FFFF 64 KB Bank 0 Flash 7 (B0F7) (1) 0x0004 0000 - 0x0004 FFFF 64 KB |
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