PIC16F57 Microchip Technology Inc., PIC16F57 Datasheet - Page 46

• Manufacturer Part Number: PIC16F57
• Description: Flash-based, 8-bit Cmos Microcontroller Series
• Manufacturer: Microchip Technology Inc.

PIC16F5X
BSF
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
BTFSC
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
DS41213D-page 44
Before Instruction
After Instruction
Before Instruction
After Instruction
FLAG_REG = 0x0A
FLAG_REG = 0x8A
PC
if FLAG<1> = 0,
PC
if FLAG<1> = 1,
PC
Bit Set f
[ label ] BSF
0 ≤ f ≤ 31
0 ≤ b ≤ 7
1 → (f<b>)
Bit ‘b’ in register ‘f’ is set.
1
1
BSF
Bit Test f, Skip if Clear
[ label ] BTFSC f, b
0 ≤ f ≤ 31
0 ≤ b ≤ 7
skip if (f<b>) = 0
If bit ‘b’ in register ‘f’ is ‘0’, then the
next instruction is skipped.
If bit ‘b’ is ‘0’, then the next instruc-
tion fetched during the current
instruction execution is discarded
and a NOP is executed instead,
making this a two-cycle instruction.
1
1(2)
HERE
FALSE
TRUE
0101
0110
= address (HERE)
= address (TRUE);
= address(FALSE)
FLAG_REG,
BTFSC
GOTO
•
•
•
bbbf
bbbf
f, b
FLAG,1
PROCESS_CODE
ffff
ffff
7
BTFSS
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
Before Instruction
After Instruction
PC
If FLAG<1>
PC
if FLAG<1>
PC
Bit Test f, Skip if Set
[ label ] BTFSS f, b
0 ≤ f ≤ 31
0 ≤ b < 7
skip if (f<b>) = 1
If bit ‘b’ in register ‘f’ is ‘1’, then the
next instruction is skipped.
If bit ‘b’ is ‘1’, then the next instruc-
tion fetched during the current
instruction execution is discarded
and a NOP is executed instead,
making this a two-cycle instruction.
1
1(2)
HERE
FALSE
TRUE
0111
© 2007 Microchip Technology Inc.
=
=
=
=
=
•
•
•
GOTO
BTFSS
bbbf
address (HERE)
0,
address (FALSE);
1,
address (TRUE)
PROCESS_CODE
FLAG,1
ffff