PIC18F25J50 MICROCHIP [Microchip Technology], PIC18F25J50 Datasheet - Page 449
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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BTG
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
2011 Microchip Technology Inc.
Q Cycle Activity:
Before Instruction:
After Instruction:
Decode
LATC
LATC
Q1
=
=
register ‘f’
BTG
Bit Toggle f
BTG f, b {,a}
0 f 255
0 b < 7
a [0,1]
(f<b>) f<b>
None
Bit ‘b’ in data memory location, ‘f’, is
inverted.
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
Read
0111
Q2
0111 0101 [75h]
0110 0101 [65h]
LATC,
bbba
Process
Data
Q3
4, 0
for details.
ffff
register ‘f’
Write
Q4
ffff
PIC18F46J50 FAMILY
BOV
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
No
PC
If Overflow
If Overflow
Q1
Q1
PC
PC
Read literal
Read literal
operation
Branch if Overflow
BOV
-128 n 127
if Overflow bit is ‘1’,
(PC) + 2 + 2n PC
None
If the Overflow bit is ‘1’, then the
program will branch.
The 2’s complement number, ‘2n’, is
added to the PC. Since the PC will
have incremented to fetch the next
instruction, the new address will be
PC + 2 + 2n. This instruction is then a
two-cycle instruction.
1
1(2)
HERE
1110
No
Q2
‘n’
Q2
‘n’
=
=
=
=
=
n
address (HERE)
1;
address (Jump)
0;
address (HERE + 2)
0100
BOV
operation
Process
Process
Data
Data
No
Q3
Q3
DS39931D-page 449
Jump
nnnn
Write to PC
operation
operation
No
No
Q4
Q4
nnnn
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