參數(shù)資料
型號: 16F84
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER, BLUE 15 FT PATCH CABLE
中文描述: 18引腳閃存/ EEPROM的8位微控制器
文件頁數(shù): 63/124頁
文件大小: 1322K
代理商: 16F84
PIC16F8X
1998 Microchip Technology Inc.
DS30430C-page 63
NOP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
No Operation
[ label NOP
None
No operation
None
00
0000
0xx0
0000
No operation.
1
1
Q1
Q2
Q3
Q4
Decode
No-Opera
tion
No-Opera
tion
No-Operat
ion
Example
NOP
OPTION
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Load Option Register
[ label OPTION
None
(W)
OPTION
00
0000
0110
0010
The contents of the W register are
loaded in the OPTION register. This
instruction is supported for code com-
patibility with PIC16C5X products.
Since OPTION is a readable/writable
register, the user can directly address
it.
1
1
Words:
Cycles:
Example
To maintain upward compatibility
with future PIC16CXX products,
do not use this instruction.
RETFIE
Syntax:
Operands:
Operation:
Return from Interrupt
[ label RETFIE
None
TOS
PC,
1
GIE
None
Status Affected:
Encoding:
Description:
00
0000
0000
1001
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
Q1
Q2
Words:
Cycles:
Q Cycle Activity:
Q3
Q4
1st Cycle
Decode
No-Opera
tion
Set the
GIE bit
Pop from
the Stack
2nd Cycle
No-Operat
ion
No-Opera
tion
No-Opera
tion
No-Operat
ion
Example
RETFIE
After Interrupt
PC =
GIE =
TOS
1
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