PIC18F1220 MICROCHIP [Microchip Technology], PIC18F1220 Datasheet - Page 201

• Manufacturer Part Number: PIC18F1220
• Description: 18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

ANDWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
 2004 Microchip Technology Inc.
Q Cycle Activity:
Before Instruction
After Instruction
Decode
W
REG
W
REG
Q1
=
=
=
=
register ‘f’
AND W with f
[ label ] ANDWF
0
d
a
(W) .AND. (f)
N, Z
The contents of W are AND’ed with
register ‘f’. If ‘d’ is ‘0’, the result is
stored in W. If ‘d’ is ‘1’, the result is
stored back in register ‘f’ (default).
If ‘a’ is ‘0’, the Access Bank will be
selected. If ‘a’ is ‘1’, the BSR will
not be overridden (default).
1
1
ANDWF
Read
0001
Q2
0x17
0xC2
0x02
0xC2
f
[0,1]
[0,1]
255
01da
REG, W
Process
Data
Q3
dest
ffff
f [,d [,a]]
destination
Write to
Q4
ffff
BC
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
PC
If Carry
If Carry
Q1
Q1
PIC18F1220/1320
No
PC
PC
Read literal
Read literal
operation
Branch if Carry
[ label ] BC
-128
if Carry bit is ‘1’
None
If the Carry 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
(PC) + 2 + 2n
1110
Q2
Q2
No
‘n’
‘n’
=
=
=
=
=
n
address (HERE)
1;
address (JUMP)
0;
address (HERE + 2)
127
0010
BC
operation
Process
Process
n
Data
Data
Q3
Q3
No
DS39605C-page 199
JUMP
PC
nnnn
Write to PC
operation
operation
Q4
Q4
No
No
nnnn