PIC18F25K80 MICROCHIP [Microchip Technology], PIC18F25K80 Datasheet - Page 500

• Manufacturer Part Number: PIC18F25K80
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F66K80 FAMILY
BTFSC
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39977C-page 500
Q Cycle Activity:
If skip:
If skip and followed by 2-word instruction:
Before Instruction
After Instruction
operation
operation
operation
Decode
PC
If FLAG<1>
If FLAG<1>
No
No
No
Q1
Q1
Q1
PC
PC
Bit Test File, Skip if Clear
BTFSC f, b {,a}
0  f  255
0  b  7
a  [0,1]
skip if (f<b>) = 0
None
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.
If ‘a’ is ‘ 0 ’, the Access Bank is selected. If
‘a’ is ‘ 1 ’, the BSR is used to select the
GPR bank.
If ‘a’ is ‘ 0 ’ and the extended instruction set
is enabled, this instruction operates in
Indexed Literal Offset Addressing mode
whenever f  95 (5Fh). See
Section 29.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode”
1
1(2)
Note: 3 cycles if skip and followed
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
Read
1011
No
No
No
=
=
=
=
=
Q2
Q2
Q2
by a 2-word instruction.
address (HERE)
0 ;
address (TRUE)
1 ;
address (FALSE)
BTFSC
:
:
bbba
operation
operation
operation
Process
Data
No
No
No
Q3
Q3
Q3
FLAG, 1, 0
for details.
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff
Preliminary
BTFSS
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If skip:
If skip and followed by 2-word instruction:
Before Instruction
After Instruction
operation
operation
operation
Decode
PC
If FLAG<1>
If FLAG<1>
No
No
No
Q1
Q1
Q1
PC
PC
Bit Test File, Skip if Set
BTFSS f, b {,a}
0  f  255
0  b < 7
a  [0,1]
skip if (f<b>) = 1
None
If bit ‘b’ in register ‘f’ is ‘ 1 ’, then the next
instruction is skipped. If bit ‘b’ is ‘ 1 ’, then
the next instruction fetched during the
current instruction execution is discarded
and a NOP is executed instead, making
this a two-cycle instruction.
If ‘a’ is ‘ 0 ’, the Access Bank is selected. If
‘a’ is ‘ 1 ’, the BSR is used to select the
GPR bank.
If ‘a’ is ‘ 0 ’ and the extended instruction
set is enabled, this instruction operates in
Indexed Literal Offset Addressing mode
whenever f  95 (5Fh). See
Section 29.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode”
1
1(2)
Note:
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
Read
1010
No
No
No
=
=
=
=
=
Q2
Q2
Q2
 2011 Microchip Technology Inc.
address (HERE)
0 ;
address (FALSE)
1 ;
address (TRUE)
3 cycles if skip and followed
by a 2-word instruction.
BTFSS
:
:
bbba
operation
operation
operation
Process
Data
No
No
No
Q3
Q3
Q3
FLAG, 1, 0
for details.
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff