PIC16F1826-I View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC16F1826-I Datasheet PDF : 406 Pages
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PIC16F/LF1826/27
RETFIE
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example:
Return from Interrupt
[ label ] RETFIE
None
TOS PC,
1 GIE
None
Return from Interrupt. Stack is POPed
and Top-of-Stack (TOS) is loaded in
the PC. Interrupts are enabled by
setting Global
Interrupt Enable bit, GIE
(INTCON<7>). This is a two-cycle
instruction.
1
2
RETFIE
After Interrupt
PC =
GIE =
TOS
1
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example:
TABLE
Return with literal in W
[ label ] RETLW k
0 k 255
k (W);
TOS PC
None
The W register is loaded with the eight
bit literal ‘k’. The program counter is
loaded from the top of the stack (the
return address). This is a two-cycle
instruction.
1
2
CALL TABLE;W contains table
;offset value
• ;W now has table value
•
•
ADDWF PC ;W = offset
RETLW k1 ;Begin table
RETLW k2 ;
•
•
•
RETLW kn ; End of table
Before Instruction
W=
After Instruction
W=
0x07
value of k8
RETURN
Syntax:
Operands:
Operation:
Status Affected:
Description:
Return from Subroutine
[ label ] RETURN
None
TOS PC
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.
RLF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example:
Rotate Left f through Carry
[ label ] RLF f,d
0 f 127
d [0,1]
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’.
C
Register f
1
1
RLF
REG1,0
Before Instruction
REG1 =
C
=
After Instruction
REG1 =
W
=
C
=
1110 0110
0
1110 0110
1100 1100
1
DS41391C-page 340
Preliminary
2010 Microchip Technology Inc.
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