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PIC16CR74E/SP Datasheet(PDF) 113 Page - Microchip Technology |
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PIC16CR74E/SP Datasheet(HTML) 113 Page - Microchip Technology |
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113 / 172 page  © 2007 Microchip Technology Inc. DS21993C-page 111 PIC16CR7X RLF Rotate Left f through Carry Syntax: [ label ] RLF f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: See description below Status Affected: C 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 the W register. If ‘d’ is ‘1’, the result is stored back in register ‘f’. RETURN Return from Subroutine Syntax: [ label ] RETURN Operands: None Operation: TOS → PC Status Affected: None Description: Return from subroutine. The stack is POPed and the top of the stack (TOS) is loaded into the program counter. This is a two-cycle instruction. RRF Rotate Right f through Carry Syntax: [ label ] RRF f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: See description below Status Affected: C Description: The contents of register ‘f’ are rotated one bit to the right through the Carry Flag. If ‘d’ is ‘0’, the result is placed in the W register. If ‘d’ is ‘1’, the result is placed back in register ‘f’. Register f C Register f C SLEEP Syntax: [ label ] SLEEP Operands: None Operation: 00h → WDT, 0 → WDT prescaler, 1 → TO, 0 → PD Status Affected: TO, PD Description: The power-down Status bit PD is cleared. Time-out Status bit TO is set. Watchdog Timer and its prescaler are cleared. The processor is put into Sleep mode with the oscillator stopped. SUBLW Subtract W from Literal Syntax: [ label ] SUBLW k Operands: 0 ≤ k ≤ 255 Operation: k - (W) → (W) Status Affected: C, DC, Z Description: The W register is subtracted (2’s complement method) from the eight-bit literal ‘k’. The result is placed in the W register. SUBWF Subtract W from f Syntax: [ label ] SUBWF f,d Operands: 0 ≤ f ≤ 127 d ∈ [0,1] Operation: (f) - (W) → (destination) Status Affected: C, DC, Z Description: Subtract (2’s complement method) W register from register ‘f’. If ‘d’ is ‘0’, the result is stored in the W register. If ‘d’ is ‘1’, the result is stored back in register ‘f’. |
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