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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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MB91F465KB 数据表(PDF) 27 Page - Cypress Semiconductor |
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MB91F465KB 数据表(HTML) 27 Page - Cypress Semiconductor |
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27 / 86 page  MB91460K Series Document Number: 002-04602 Rev. *A Page 27 of 86 86 9. Embedded Program/Data Memory (Flash) 9.1 Flash Features ■ MB91F465Kx: 544 Kbytes (8 64 Kbytes 4 8 Kbytes) = 4.25 Mbits ■ Programmable wait state for read/write access ■ Flash and Boot security with security vector at 0x0014:8000 - 0x0014:800F ■ Boot security ■ Basic specification: Same as MBM29LV400TC (except size and part of sector configuration) 9.2 Operation Modes 9.2.1 32-bit CPU mode : ■ CPU reads and executes programs in word (32-bit) length units. ■ Actual Flash Memory access is performed in word (32-bit) length units. 9.2.2 16-bit CPU mode : ■ CPU reads and writes in half-word (16-bit) length units. ■ Program execution from the Flash is not possible. ■ Actual Flash Memory access is performed in half-word (16-bit) length units. Note: The operation mode of the flash memory can be selected using a Boot-ROM function. The function start address is 0xBF60. The parameter description is given in the Hardware Manual in chapter 54.6 "Flash Access Mode Switching". |
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