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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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PIC16F720-E/ML датащи(PDF) 164 Page - Microchip Technology |
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PIC16F720-E/ML датащи(HTML) 164 Page - Microchip Technology |
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164 / 244 page  PIC16F/LF720/721 DS41430A-page 164 2010 Microchip Technology Inc. Since data is being written to buffer registers, the writing of the first 31 words of the block appears to occur immediately. The processor will halt internal operations for the typical 4ms, only during the cycle in which the erase takes place (i.e., the last word of the 32-word block erase). This is not Sleep mode as the clocks and peripherals will continue to run. After the 32- word write cycle, the processor will resume operation with the third instruction after the PMCON1 write instruction. FIGURE 18-2: BLOCK OF 32 WRITES TO FLASH PROGRAM MEMORY An example of the complete 32-word write sequence is shown in Example 18-2. The initial address is loaded into the PMADRH:PMADRL register pair; the 32 words of data are loaded using indirect addressing. 14 14 14 14 Program Memory Buffer Register PMADRL<4:0> = 00000 Buffer Register PMADRL<4:0> = 00001 Buffer Register PMADRL<4:0> = 00010 Buffer Register PMADRL<4:0> = 11111 PMDATL PMDATH 75 07 0 6 8 |
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