參數(shù)資料
型號: PIC16CR620A
廠商: Microchip Technology Inc.
元件分類: 8位微控制器
英文描述: EPROM-Based 8-Bit CMOS Microcontroller
中文描述: 存儲器為基礎的8位CMOS微控制器
文件頁數(shù): 69/108頁
文件大?。?/td> 645K
代理商: PIC16CR620A
1998 Microchip Technology Inc.
Preliminary
DS30235G-page 69
PIC16C62X
NOP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example
No Operation
[ label NOP
None
No operation
None
00
0000
0xx0
0000
No operation.
1
1
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
compatibility 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 PICmicro 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
Words:
Cycles:
Example
RETFIE
After Interrupt
PC =
GIE =
TOS
1
RETLW
Syntax:
Operands:
Operation:
Return with Literal in W
[ label RETLW k
0
k
255
k
(W);
TOS
PC
None
Status Affected:
Encoding:
Description:
11
01xx
kkkk
kkkk
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
Words:
Cycles:
Example
TABLE
CALL TABLE
;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
=
;W contains table
;offset value
0x07
value of k8
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相關代理商/技術參數(shù)
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