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): 56/124頁
文件大?。?/td> 1322K
代理商: 16F84
PIC16F8X
DS30430C-page 56
1998 Microchip Technology Inc.
BCF
Syntax:
Operands:
Bit Clear f
[label BCF f,b
0
f
127
0
b
7
0
(f<b>)
None
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
01
00bb
bfff
ffff
Bit 'b' in register 'f' is cleared
.
1
1
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write
register 'f'
Example
BCF
FLAG_REG, 7
Before Instruction
FLAG_REG = 0xC7
After Instruction
FLAG_REG = 0x47
BSF
Syntax:
Operands:
Bit Set f
[label BSF f,b
0
f
127
0
b
7
1
(f<b>)
None
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
01
01bb
bfff
ffff
Bit 'b' in register 'f' is set.
1
1
Q1
Q2
Q3
Q4
Decode
Read
register
'f'
Process
data
Write
register 'f'
Example
BSF
FLAG_REG, 7
Before Instruction
FLAG_REG = 0x0A
After Instruction
FLAG_REG = 0x8A
BTFSC
Syntax:
Operands:
Bit Test, Skip if Clear
[label BTFSC f,b
0
f
127
0
b
7
skip if (f<b>) = 0
None
Operation:
Status Affected:
Encoding:
Description:
01
10bb
bfff
ffff
If bit 'b' in register 'f' is '1' then the next
instruction is executed.
If bit 'b', in register 'f', is '0' then the next
instruction is discarded, and a NOP is
executed instead, making this a 2T
CY
instruction
.
1
1(2)
Q1
Q2
Words:
Cycles:
Q Cycle Activity:
Q3
Q4
Decode
Read
register 'f'
Process
data
No-Operat
ion
If Skip:
(2nd Cycle)
Q1
Q2
Q3
Q4
No-Operat
ion
No-Operati
on
No-Opera
tion
No-Operat
ion
Example
HERE
FALSE
TRUE
BTFSC
GOTO
FLAG,1
PROCESS_CODE
Before Instruction
PC =
address
HERE
After Instruction
if FLAG<1> = 0,
PC = address
TRUE
if FLAG<1>=1,
PC = address
FALSE
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