PIC18F2480 MICROCHIP [Microchip Technology], PIC18F2480 Datasheet - Page 376

• Manufacturer Part Number: PIC18F2480
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2480/2580/4480/4580
BTFSC
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39637A-page 374
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
0
a
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
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 (default).
If ‘a’ is ‘0’ and the extended instruction set
is enabled, this instruction operates in
Indexed Literal Offset Addressing
mode whenever f
See Section 25.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
1(2)
Note:
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
Read
1011
No
No
No
f
b
=
=
=
=
=
Q2
Q2
Q2
[0,1]
NOP
255
7
address (HERE)
0;
address (TRUE)
1;
address (FALSE)
3 cycles if skip and followed
by a 2-word instruction.
BTFSC
:
:
is executed instead, making
bbba
operation
operation
operation
Process
Data
No
No
No
Q3
Q3
Q3
95 (5Fh).
FLAG, 1, 0
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
0
a
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
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 (default).
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f
See Section 25.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
1(2)
Note: 3 cycles if skip and followed
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
Read
1010
No
No
No
=
=
=
=
=
f
b < 7
Q2
Q2
Q2
[0,1]
 2004 Microchip Technology Inc.
NOP
255
by a 2-word instruction.
address (HERE)
0;
address (FALSE)
1;
address (TRUE)
BTFSS
:
:
is executed instead, making
bbba
operation
operation
operation
Process
Data
No
No
No
Q3
Q3
Q3
95 (5Fh).
FLAG, 1, 0
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff