PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 448
PIC18F25J50
Manufacturer Part Number
PIC18F25J50
Description
28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F25J50.pdf
(562 pages)
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PIC18F46J50 FAMILY
BTFSC
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39931D-page 448
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 execu-
tion 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 (default).
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 28.2.3 “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
1011
Read
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
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 execu-
tion 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 (default).
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 28.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode”
1
1(2)
Note:
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
1010
Read
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
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