Datasheet

PIC16F62X
DS40300C-page 110 Preliminary  2003 Microchip Technology Inc.
BCF Bit Clear f
Syntax: [ label ] BCF f,b
Operands: 0 ≤ f ≤ 127
0 ≤ b ≤ 7
Operation: 0 → (f<b>)
Status Affected: None
Encoding:
01 00bb bfff ffff
Description: Bit 'b' in register 'f' is cleared.
Words: 1
Cycles: 1
Example
BCF REG1, 7
Before Instruction
REG1 = 0xC7
After Instruction
REG1 = 0x47
BSF Bit Set f
Syntax: [ label ] BSF f,b
Operands: 0 ≤ f ≤ 127
0 ≤ b ≤ 7
Operation: 1 → (f<b>)
Status Affected: None
Encoding:
01 01bb bfff ffff
Description: Bit 'b' in register 'f' is set.
Words: 1
Cycles: 1
Example
BSF REG1, 7
Before Instruction
REG1 = 0x0A
After Instruction
REG1 = 0x8A
BTFSC Bit Test f, Skip if Clear
Syntax: [ label ] BTFSC f,b
Operands: 0 ≤ f ≤ 127
0 ≤ b ≤ 7
Operation: skip if (f<b>) = 0
Status Affected: None
Encoding:
01 10bb bfff ffff
Description: If bit 'b' in register 'f' is '0' then the
next instruction is skipped.
If bit 'b' is '0' then the next
instruction fetched during the
current instruction execution is
discarded, and a NOP is executed
instead, making this a two-cycle
instruction.
Words: 1
Cycles: 1
(2)
Example
HERE
FALSE
TRUE
BTFSC
GOTO
•
•
•
REG1
PROCESS_CODE
Before Instruction
PC = address HERE
After Instruction
if REG<1> = 0,
PC = address TRUE
if REG<1>=1,
PC = address FALSE