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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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PIC18F87J11 数据表(PDF) 92 Page - Microchip Technology |
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PIC18F87J11 数据表(HTML) 92 Page - Microchip Technology |
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92 / 466 page  PIC18F87J11 FAMILY DS39778E-page 92 2007-2012 Microchip Technology Inc. FIGURE 6-10: COMPARING ADDRESSING OPTIONS FOR BIT-ORIENTED AND BYTE-ORIENTED INSTRUCTIONS (EXTENDED INSTRUCTION SET ENABLED) EXAMPLE INSTRUCTION: ADDWF, f, d, a (Opcode: 0010 01da ffff ffff) When a = 0 and f 60h: The instruction executes in Direct Forced mode. ‘f’ is interpreted as a location in the Access RAM between 060h and FFFh. This is the same as locations F60h to FFFh (Bank 15) of data memory. Locations below 060h are not available in this addressing mode. When a = 0 and f 5Fh: The instruction executes in Indexed Literal Offset mode. ‘f’ is interpreted as an offset to the address value in FSR2. The two are added together to obtain the address of the target register for the instruction. The address can be anywhere in the data memory space. Note that in this mode, the correct syntax is now: ADDWF [k], d where ‘k’ is the same as ‘f’. When a = 1 (all values of f): The instruction executes in Direct mode (also known as Direct Long mode). ‘f’ is interpreted as a location in one of the 16 banks of the data memory space. The bank is designated by the Bank Select Register (BSR). The address can be in any implemented bank in the data memory space. 000h 060h 100h F00h F60h FFFh Valid range 00h 60h FFh Data Memory Access RAM Bank 0 Bank 1 through Bank 14 Bank 15 SFRs 000h 060h 100h F00h F60h FFFh Data Memory Bank 0 Bank 1 through Bank 14 Bank 15 SFRs FSR2H FSR2L ffffffff 001001da ffffffff 001001da 000h 060h 100h F00h F60h FFFh Data Memory Bank 0 Bank 1 through Bank 14 Bank 15 SFRs for ‘f’ BSR 00000000 |
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