PIC12F609T-I/P View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC12F609T-I/P Datasheet PDF : 212 Pages
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PIC12F609/615/617/12HV609/615
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 (INT-
CON<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
DONE
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
GOTO DONE
•
•
ADDWF PC ;W = offset
RETLW k1 ;Begin table
RETLW k2 ;
•
•
•
RETLW kn ;End of table
Before Instruction
W = 0x07
After Instruction
W = 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.
2010 Microchip Technology Inc.
DS41302D-page 135
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