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PIC18F258-E/LSQTP bảng dữ liệu(PDF) 304 Page - Microchip Technology |
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PIC18F258-E/LSQTP bảng dữ liệu(HTML) 304 Page - Microchip Technology |
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304 / 402 page ![]() PIC18FXX8 DS41159E-page 302 © 2006 Microchip Technology Inc. GOTO Unconditional Branch Syntax: [ label ] GOTO k Operands: 0 ≤ k ≤ 1048575 Operation: k → PC<20:1> Status Affected: None Encoding: 1st word (k<7:0>) 2nd word(k<19:8>) 1110 1111 1111 k19kkk k7kkk kkkk kkkk0 kkkk8 Description: GOTO allows an unconditional branch anywhere within entire 2-Mbyte memory range. The 20-bit value ‘k’ is loaded into PC<20:1>. GOTO is always a two-cycle instruction. Words: 2 Cycles: 2 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read literal ‘k’<7:0> No operation Read literal ‘k’<19:8>, Write to PC No operation No operation No operation No operation Example: GOTO THERE After Instruction PC = Address (THERE) INCF Increment f Syntax: [ label ] INCF f [,d [,a]] Operands: 0 ≤ f ≤ 255 d ∈ [0,1] a ∈ [0,1] Operation: (f) + 1 → dest Status Affected: C, DC, N, OV, Z Encoding: 0010 10da ffff ffff Description: The contents of register ‘f’ are incremented. If ‘d’ is ‘0’, the result is placed in W. If ‘d’ is ‘1’, the result is placed back in register ‘f’ (default). If ‘a’ is ‘0’, the Access Bank will be selected, overriding the BSR value. If ‘a’ = 1, then the bank will be selected as per the BSR value (default). Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register ‘f’ Process Data Write to destination Example: INCF CNT, Before Instruction CNT = 0xFF Z= 0 C= ? DC = ? After Instruction CNT = 0x00 Z= 1 C= 1 DC = 1 |
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