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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MB91F467DA датащи(PDF) 31 Page - Cypress Semiconductor |
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MB91F467DA датащи(HTML) 31 Page - Cypress Semiconductor |
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31 / 137 page  Document Number: 002-04613 Rev. *A Page 31 of 137 MB91460D Series 9. Embedded Program/data Memory (Flash) 9.1 Flash features • MB91F467Dx: 1088 Kbytes (16 × 64 Kbytes 8 × 8 Kbytes) = 8.5 Mbits • MB91F465DA: 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 1. 64-bit CPU mode (available on MB91F467Dx only) : • CPU reads and executes programs in word (32-bit) length units. • Flash writing is not possible. • Actual Flash Memory access is performed in d-word (64-bit) length units. 2. 32-bit CPU mode : • MB91F465DA: CPU reads and executes programs in word (32-bit) length units. MB91F467Dx: CPU reads, writes and executes programs in word (32-bit) length units. • Actual Flash Memory access is performed in word (32-bit) length units. 3. 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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