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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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SH33F2801P/032PR bảng dữ liệu(PDF) 46 Page - SINOWEALTH Electronic Ltd |
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SH33F2801P/032PR bảng dữ liệu(HTML) 46 Page - SINOWEALTH Electronic Ltd |
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46 / 407 page  SH33F2801 46 8.6.12 Flash Special Information Memory Block Unlock Control Register (FLASH_IKYR) Offset Address: 0x0040 Reset Value: 0x0000 0000 b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 INFO_KEY[31:0] WO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 INFO_KEY[31:0] WO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Bit Symbol Description 31 ~ 0 INFO_KEY[31:0] Flash special information memory block unlock control bit Writing the flash unlock value and operation unlock value sequentially to INFO_KEY[31:0] can unlock the OTP block of flash special information blocks. After the unlocking is successfully done, INFLCK@FLASH_CR bit is clearedby hardware and INFO_KEY[31:0] is cleared. For the Flash single unlock operation, after the unlocking is successfully done, only one programming or erasing operation of the flash is allowed. After the operation is completed, the INFLCK@FLASH_CR bit is automatically set to '1' by hardware, and the flash related block is locked again. For the Flash multiple unlock operation, after the unlocking is successfully done, multiple programming or erasing operations of the flash are allowed. But after the operations are completed, the INFLCK@FLASH_CR bit must be set to '1' by software, and then the flash related block can be locked again. These bits can be written by software only. 8.6.13 Memory Mapping Selection Register (FLASH_MEMRMP) Offset Address: 0x0100 Reset Value: 0x0000 XXXX b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 Reserved - 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0 MEMMODE[15:0] RW X X X X X X X X X X X X X X X X Bit Symbol Description 31 ~ 16 Reserved - 15 ~ 0 MEMMODE[15:0] Memory mapping selection These bits are set by hardware after reset and can be read or written by software. 0x5AA5: Boot block mapped to address 0x0 Other: Main flash memory mapped to address 0x0 Map to main flash memory as long as it does not satisfy 0x5AA5 |
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