PIC16C620 Microchip Technology, PIC16C620 Datasheet - Page 70

• Manufacturer Part Number: PIC16C620
• Description: EPROM-Based 8-Bit CMOS Microcontroller
• Manufacturer: Microchip Technology

PIC16C62X
RETURN
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
RLF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
DS30235G-page 70
Return from Subroutine
[ label ]
None
TOS
None
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.
1
2
After Interrupt
Rotate Left f through Carry
[ label ]
0
d
See description below
C
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'.
1
1
Before Instruction
After Instruction
RETURN
RLF
00
00
f
[0,1]
127
PC
C
PC =
RETURN
REG1
C
REG1
W
C
0000
RLF
1101
REG1,0
Register f
TOS
f,d
0000
=
=
=
=
=
dfff
1110 0110
0
1110 0110
1100 1100
1
1000
ffff
Preliminary
RRF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
SLEEP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Rotate Right f through Carry
[ label ]
0
d
See description below
C
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'.
1
1
Before Instruction
After Instruction
[ label ]
None
00h
0
1
0
TO, PD
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 9.8 for more details.
1
1
SLEEP
RRF
00
f
00
[0,1]
WDT prescaler,
TO,
PD
1998 Microchip Technology Inc.
127
C
WDT,
REG1
C
REG1
W
C
RRF f,d
1100
SLEEP
0000
Register f
REG1,0
=
=
=
=
=
dfff
0110
1110 0110
0
1110 0110
0111 0011
0
0011
ffff