PIC18F2450 MICROCHIP [Microchip Technology], PIC18F2450 Datasheet - Page 245
PIC18F2450
Manufacturer Part Number
PIC18F2450
Description
28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2450.pdf
(320 pages)
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RETURN
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
© 2006 Microchip Technology Inc.
Q Cycle Activity:
After Instruction:
operation
Decode
PC = TOS
No
Q1
operation
operation
Return from Subroutine
RETURN {s}
s
(TOS)
if s = 1
(WS)
(STATUSS)
(BSRS)
PCLATU, PCLATH are unchanged
None
Return from subroutine. The stack is
popped and the top of the stack (TOS)
is loaded into the program counter. If
‘s’= 1, the contents of the shadow
registers WS, STATUSS and BSRS are
loaded into their corresponding
registers, W, STATUS and BSR. If
‘s’ = 0, no update of these registers
occurs (default).
1
2
RETURN
0000
No
No
Q2
[0,1]
W,
PC,
BSR,
0000
operation
Process
STATUS,
Data
No
Q3
0001
from stack
Advance Information
operation
Pop PC
No
Q4
001s
RLCF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
REG
C
REG
W
C
PIC18F2450/4450
Q1
=
=
=
=
=
register ‘f’
Rotate Left f through Carry
(f<n>)
The contents of register ‘f’ are rotated
0
d
a
(f<7>)
(C)
C, N, Z
one bit to the left through the Carry
flag. If ‘d’ is ‘0’, the result is placed in
W. If ‘d’ is ‘1’, the result is stored back
in register ‘f’ (default).
If ‘a’ is ‘0’, the Access Bank is
selected. If ‘a’ is ‘1’, the BSR is used to
select the GPR bank (default).
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction
operates in Indexed Literal Offset
Addressing mode whenever
f
“Byte-Oriented and Bit-Oriented
Instructions in Indexed Literal Offset
Mode” for details.
1
1
RLCF
RLCF
Read
0011
Q2
95 (5Fh). See Section 19.2.3
1110 0110
0
1110 0110
1100 1100
1
f
[0,1]
[0,1]
dest<0>
255
C
dest<n + 1>,
C,
f {,d {,a}}
01da
Process
REG, 0, 0
Data
Q3
DS39760A-page 243
register f
ffff
destination
Write to
Q4
ffff
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