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PIC17C752-08/CL 데이터시트(PDF) 220 Page - Microchip Technology |
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PIC17C752-08/CL 데이터시트(HTML) 220 Page - Microchip Technology |
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220 / 328 page ![]() PIC17C7XX DS30289A-page 220 © 1998 Microchip Technology Inc. RETURN Return from Subroutine Syntax: [ label ] RETURN Operands: None Operation: TOS → PC; Status Affected: None Encoding: 0000 0000 0000 0010 Description: Return from subroutine. The stack is popped and the top of the stack (TOS) is loaded into the program counter. Words: 1 Cycles: 2 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode No operation Process Data POP PC from stack No operation No operation No operation No operation Example: RETURN After Interrupt PC = TOS RLCF Rotate Left f through Carry Syntax: [ label ] RLCF f,d Operands: 0 ≤ f ≤ 255 d ∈ [0,1] Operation: f<n> → d<n+1>; f<7> → C; C → d<0> Status Affected: C Encoding: 0001 101d ffff ffff Description: The contents of register 'f' are rotated one bit to the left through the Carry Flag. If 'd' is 0 the result is placed in WREG. If 'd' is 1 the result is stored back in register 'f'. Words: 1 Cycles: 1 Q Cycle Activity: Q1 Q2 Q3 Q4 Decode Read register 'f' Process Data Write to destination Example: RLCF REG,0 Before Instruction REG = 1110 0110 C= 0 After Instruction REG = 1110 0110 WREG = 1100 1100 C= 1 C register f |
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