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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AT89C5131A-RDTUM Fiches technique(PDF) 34 Page - ATMEL Corporation |
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AT89C5131A-RDTUM Fiches technique(HTML) 34 Page - ATMEL Corporation |
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34 / 188 page  34 4337K–USB–04/08 AT89C5130A/31A-M Figure 8-5. Column Latches Loading Procedure 8.3.6 Programming the Flash Spaces 8.3.6.1 User The following procedure is used to program the User space and is summarized in Figure 8-6: • Load data in the column latches from address 0000h to 7FFFh(1). • Disable the interrupts. • Launch the programming by writing the data sequence 50h followed by A0h in FCON register. The end of the programming indicated by the FBUSY flag cleared. • Enable the interrupts. Note: 1. The last page address used when loading the column latch is the one used to select the page programming address. 8.3.6.2 Extra Row The following procedure is used to program the Extra Row space and is summarized in Figure 8- 6: • Load data in the column latches from address FF80h to FFFFh. • Disable the interrupts. • Launch the programming by writing the data sequence 52h followed by A2h in FCON register. The end of the programming indicated by the FBUSY flag cleared. • Enable the interrupts. Column Latches Loading Data Load DPTR = Address ACC = Data Exec: MOVX @DPTR, A Last Byte to load? Column Latches Mapping FPS = 1 Data memory Mapping FPS = 0 |
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