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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC10LF322T-EMCSQTP датащи(PDF) 67 Page - Microchip Technology |
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PIC10LF322T-EMCSQTP датащи(HTML) 67 Page - Microchip Technology |
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67 / 210 page  2011 Microchip Technology Inc. Preliminary DS41585A-page 67 PIC10(L)F320/322 9.3 Modifying Flash Program Memory When modifying existing data in a program memory row, and data within that row must be preserved, it must first be read and saved in a RAM image. Program memory is modified using the following steps: 1. Load the starting address of the row to be modified. 2. Read the existing data from the row into a RAM image. 3. Modify the RAM image to contain the new data to be written into program memory. 4. Load the starting address of the row to be rewritten. 5. Erase the program memory row. 6. Load the write latches with data from the RAM image. 7. Initiate a programming operation. FIGURE 9-7: FLASH PROGRAM MEMORY MODIFY FLOWCHART Start Modify Operation Read Operation (Figure x.x) Erase Operation (Figure x.x) Modify Image The words to be modified are changed in the RAM image End Modify Operation Write Operation use RAM image (Figure x.x) An image of the entire row read must be stored in RAM Figure 9-2 Figure 9-4 Figure 9-5 |
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