PIC18F2220 MICROCHIP [Microchip Technology], PIC18F2220 Datasheet - Page 270
![no-image](/images/no-image-200.jpg)
PIC18F2220
Manufacturer Part Number
PIC18F2220
Description
28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F2220.pdf
(388 pages)
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PIC18F2220/2320/4220/4320
BTFSC
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39599C-page 268
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
[ label ] 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 instruc-
tion fetched during the current
instruction execution is discarded
and a NOP is executed instead, mak-
ing this a two-cycle instruction. If ‘a’
is ‘0’, the Access Bank will be
selected, overriding the BSR value. If
‘a’ = 1, then the bank will be selected
as per the BSR value (default).
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
=
=
=
=
=
f
b
[0,1]
255
7
address (HERE)
0;
address (TRUE)
1;
address (FALSE)
by a 2-word instruction.
BTFSC
:
:
Process Data
bbba
operation
operation
operation
No
No
No
Q3
Q3
Q3
FLAG, 1
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
[ label ] 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 instruc-
tion fetched during the current
instruction execution is discarded
and a NOP is executed instead, mak-
ing this a two-cycle instruction. If ‘a’
is ‘0’, the Access Bank will be
selected, overriding the BSR value. If
‘a’ = 1, then the bank will be selected
as per the BSR value (default).
1
1(2)
Note:
register ‘f’
HERE
FALSE
TRUE
operation
operation
operation
Read
1010
No
No
No
Q2
Q2
Q2
=
=
=
=
=
f
b < 7
[0,1]
2003 Microchip Technology Inc.
255
address (HERE)
0;
address (FALSE)
1;
address (TRUE)
3 cycles if skip and followed
by a 2-word instruction.
BTFSS
:
:
Process Data
bbba
operation
operation
operation
No
No
No
Q3
Q3
Q3
FLAG, 1
ffff
operation
operation
operation
operation
No
No
No
No
Q4
Q4
Q4
ffff
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