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PIC16F1507-E/SS. 数据表(PDF) 202 Page - Microchip Technology

部件名 PIC16F1507-E/SS.
功能描述  20-Pin Flash, 8-Bit Microcontrollers
PDF  278 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

PIC16F1507-E/SS. 数据表(HTML) 202 Page - Microchip Technology

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DS40001586D-page 202
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RETFIE
Return from Interrupt
Syntax:
[ label ]
RETFIE
Operands:
None
Operation:
TOS
 PC,
1
 GIE
Status Affected:
None
Description:
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 2-cycle
instruction.
Words:
1
Cycles:
2
Example:
RETFIE
After Interrupt
PC =
TOS
GIE =
1
RETLW
Return with literal in W
Syntax:
[ label ]
RETLW k
Operands:
0
 k  255
Operation:
k
 (W);
TOS
 PC
Status Affected:
None
Description:
The W register is loaded with the 8-bit
literal ‘k’. The program counter is
loaded from the top of the stack (the
return address). This is a 2-cycle
instruction.
Words:
1
Cycles:
2
Example:
TABLE
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
=
0x07
After Instruction
W
=
value of k8
RETURN
Return from Subroutine
Syntax:
[ label ]
RETURN
Operands:
None
Operation:
TOS
 PC
Status Affected:
None
Description:
Return from subroutine. The stack is
POPed and the top of the stack (TOS)
is loaded into the program counter.
This is a 2-cycle instruction.
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
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 f
C



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