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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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APFCON 数据表(PDF) 108 Page - Microchip Technology |
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APFCON 数据表(HTML) 108 Page - Microchip Technology |
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108 / 222 page  MCP19111 DS22331A-page 108 2013 Microchip Technology Inc. FIGURE 18-2: BLOCK WRITES TO 4K FLASH PROGRAM MEMORY FIGURE 18-3: FLASH PROGRAM MEMORY LONG WRITE CYCLE EXECUTION 14 14 14 14 Program Memory Buffer Register PMADRL<1:0> = 00 Buffer Register PMADRL<1:0> = 01 Buffer Register PMADRL<1:0> = 10 Buffer Register PMADRL<1:0> = 11 PMDATL PMDATH 75 07 0 6 8 First word of block to be written If at new row sixteen words of Flash are erased, then four buffers are transferred to Flash automatically after this word is written Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 BSF PMCON1,WR Executed here INSTR (PC + 1) Executed here PC + 1 Flash INSTR PMDATH,PMDATL INSTR (PC+3) INSTR NOP Executed here Flash Flash PMWHLT WR bit Processor halted EE Write Time PMADRH,PMADRL PC + 3 PC + 4 INSTR (PC + 3) Executed here ADDR DATA Memory Location ignored read PC + 2 INSTR (PC+2) (INSTR (PC + 2) NOP Executed here (PC) (PC + 1) |
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