Datasheet
PIC16CE62X
DS40182D-page 74 1998-2013 Microchip Technology Inc.
RETURN Return from Subroutine
Syntax: [
label
] RETURN
Operands: None
Operation: TOS PC
Status Affected: None
Encoding:
00 0000 0000 1000
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.
Words: 1
Cycles: 2
Example
RETURN
After Interrupt
PC = TOS
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
Encoding:
00 1101 dfff 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
the W register. If 'd' is 1, the result is
stored back in register 'f'.
Words: 1
Cycles: 1
Example
RLF REG1,0
Before Instruction
REG1 = 1110 0110
C =0
After Instruction
REG1 = 1110 0110
W = 1100 1100
C =1
Register fC
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
Encoding:
00 1100 dfff ffff
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'.
Words: 1
Cycles: 1
Example
RRF REG1,0
Before Instruction
REG1 = 1110 0110
C =0
After Instruction
REG1 = 1110 0110
W = 0111 0011
C =0
SLEEP
Syntax: [
label
] SLEEP
Operands: None
Operation: 00h WDT,
0 WDT prescaler,
1 TO
,
0 PD
Status Affected: TO, PD
Encoding:
00 0000 0110 0011
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.
See Section 10.8 for more details.
Words: 1
Cycles: 1
Example: SLEEP
Register fC