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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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R8C/2G 数据表(PDF) 276 Page - Renesas Technology Corp |
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R8C/2G 数据表(HTML) 276 Page - Renesas Technology Corp |
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276 / 344 page  R8C/2G Group 20. Flash Memory Rev.1.00 Apr 04, 2008 Page 256 of 318 REJ09B0387-0100 20.4.3.1 Software Commands There are five types of software commands: • Read array • Read status register • Clear status register • Program • Block erase Figure 20.8 shows Software Command Status Transition Diagram in EW0 Mode. Figure 20.8 Software Command Status Transition Diagram in EW0 Mode Read array mode (FMR46 = 1 Reading enabled) Program Read status register mode Block erase Clear status register Auto-erasure completed Non-D0h and non-FFh Write 1 to the FMR01 bit immediately after writing 0. FMR01 = 0 CPU rewrite mode (EW0 mode) Read array mode (FMR46 = 1 Reading enabled) No command required Reading only available Auto-programming completed 50h (Clear status register command) 20h (Block erase command) FFh (Read array command) 70h (Read status register command) 40h (Program command) Write data (Programming starts) FFh (Read array command) D0h (Block erasure starts) Auto-erase (FMR46 = 0 Reading disabled) Auto-program (FMR46 = 0 Reading disabled) Clear ends Reset CPU rewrite disabled |
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