PIC18F248-E/L MICROCHIP [Microchip Technology], PIC18F248-E/L Datasheet - Page 293
PIC18F248-E/L
Manufacturer Part Number
PIC18F248-E/L
Description
28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F248-EL.pdf
(402 pages)
- Current page: 293 of 402
- Download datasheet (8Mb)
BNC
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
© 2006 Microchip Technology Inc.
Q Cycle Activity:
If Jump:
If No Jump:
Before Instruction
After Instruction
operation
Decode
Decode
No
PC
If Carry
If Carry
Q1
Q1
PC
PC
Read literal
Read literal
operation
Branch if Not Carry
[ label ] BNC
-128
if Carry bit is ‘0’
(PC) + 2 + 2n
None
If the Carry bit is ‘0’, 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 instruc-
tion, 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)
0;
address (Jump)
1;
address (HERE + 2)
127
0011
BNC
operation
Process
Process
n
Data
Data
PC
No
Q3
Q3
Jump
nnnn
Write to PC
operation
operation
No
No
Q4
Q4
nnnn
BNN
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 Negative
If Negative
Q1
Q1
PC
PC
Read literal
Read literal
operation
Branch if Not Negative
[ label ] BNN
-128
if Negative bit is ‘0’
(PC) + 2 + 2n
None
If the Negative bit is ‘0’, 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 instruc-
tion, the new address will be
PC + 2 + 2n. This instruction is then a
two-cycle instruction.
1
1(2)
HERE
1110
No
‘n’
‘n’
Q2
Q2
=
=
=
=
=
PIC18FXX8
n
address (HERE)
0;
address (Jump)
1;
address (HERE + 2)
127
0111
BNN
operation
Process
Process
n
Data
Data
PC
No
Q3
Q3
DS41159E-page 291
Jump
nnnn
Write to PC
operation
operation
No
No
Q4
Q4
nnnn
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