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数据搜索系统，热门电子元器件搜索 |
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MB90F548GLSPF 数据表(PDF) 22 Page - Cypress Semiconductor |
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MB90F548GLSPF 数据表(HTML) 22 Page - Cypress Semiconductor |
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22 / 70 page  Document Number: 002- 07696 Rev. *A Page 22 of 70 MB90540G/545G Series 7. Memory Map The memory space of the MB90540G/545G Series is shown below. Note : The high-order portion of bank 00 gives the image of the FF bank ROM to make the small model of the C compiler effective. Since the low-order 16 bits address are the same, the table in ROM can be referenced without using the “far” specification in the pointer declaration. For example, an attempt to access 00C000H accesses the value at FFC000H in ROM.The ROM area in bank FF exceeds 48 Kbytes, and its entire image cannot be shown in bank 00.The image between FF4000H and FFFFFFH is visible in bank 00, while the image between FF0000H and FF3FFFH is visible only in bank FF. MB90V540G/ F546G (S) FFFFFFH FEFFFFH FF0000H FDFFFFH FE0000H FCFFFFH FD0000H 00FFFFH 004000H 003FFFH 003900H 0020FFH 001FF5H 001FF0H 000100H 0000BFH 000000H FC0000H ROM (FF bank) ROM (FE bank) ROM (FD bank) ROM (FC bank) External ROM (Image of FF bank) Peripheral External RAM 8 K External Peripheral ROM correction MB90543G(S) F543G(S) FFFFFFH FEFFFFH FF0000H FE0000H 00FFFFH 004000H 003FFFH 003900H 002000H 0018FFH 000100H 0000BFH 000000H ROM (FF bank) ROM (FE bank) External ROM (Image of FF bank) Peripheral External RAM 6 K External Peripheral MB90548G(S) MB90F548GL(S) MB90F548G (S) FFFFFFH FEFFFFH FF0000H FE0000H 00FFFFH 004000H 003FFFH 003900H 002000H 0010FFH 000100H 0000BFH 000000H ROM (FF bank) ROM (FE bank) External ROM (Image of FF bank) Peripheral External RAM 4 K External Peripheral MB90549G (S) / F549G (S) FDFFFFH FCFFFFH FD0000H FC0000H ROM (FD bank) ROM (FC bank) FFFFFFH FEFFFFH FF0000H FE0000H 00FFFFH 004000H 003FFFH 003900H 002100H 0018FFH 000100H 0000BFH 000000H ROM (FF bank) ROM (FE bank) External ROM (Image of FF bank) Peripheral External RAM 6 K External Peripheral FFFFFFH FF0000H 00FFFFH 004000H 003FFFH 003900H 002000H 0008FFH 000100H 0000BFH ROM (FF bank) ROM (Image of FF bank) Peripheral External RAM 2 K External Peripheral MB90547G (S) 000000H External |
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