PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 283

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 25-2:
CONTROL OPERATIONS
BC
BN
BNC
BNN
BNOV
BNZ
BOV
BRA
BZ
CALL
CLRWDT
DAW
GOTO
NOP
NOP
POP
PUSH
RCALL
RESET
RETFIE
RETLW
RETURN
SLEEP
Note 1: When a PORT register is modified as a function of itself (e.g., MOVF PORTB, 1, 0), the value used will be
2002 Microchip Technology Inc.
Mnemonic,
Operands
2: If this instruction is executed on the TMR0 register (and, where applicable, d = 1), the prescaler will be
3: If Program Counter (PC) is modified or a conditional test is true, the instruction requires two cycles. The
4: Some instructions are 2-word instructions. The second word of these instructions will be executed as a NOP,
5: If the Table Write starts the write cycle to internal memory, the write will continue until terminated.
that value present on the pins themselves. For example, if the data latch is '1' for a pin configured as input and
is driven low by an external device, the data will be written back with a '0'.
cleared if assigned.
second cycle is executed as a NOP.
unless the first word of the instruction retrieves the information embedded in these 16 bits. This ensures that
all program memory locations have a valid instruction.
n
n
n
n
n
n
n
n
n
n, s
—
—
n
—
—
—
—
n
s
k
s
—
PIC18FXXX INSTRUCTION SET (CONTINUED)
Branch if Carry
Branch if Negative
Branch if Not Carry
Branch if Not Negative
Branch if Not Overflow
Branch if Not Zero
Branch if Overflow
Branch Unconditionally
Branch if Zero
Call subroutine 1st word
Clear Watchdog Timer
Decimal Adjust WREG
Go to address 1st word
No Operation
No Operation (Note 4)
Pop top of return stack (TOS)
Push top of return stack (TOS)
Relative Call
Software device RESET
Return from interrupt enable
Return with literal in WREG
Return from Subroutine
Go into Standby mode
2nd word
2nd word
Description
1 (2)
1 (2)
1 (2)
1 (2)
1 (2)
2
1 (2)
1 (2)
1 (2)
2
1
1
2
1
1
1
1
2
1
2
2
2
1
Cycles
1110
1110
1110
1110
1110
1110
1110
1101
1110
1110
1111
0000
0000
1110
1111
0000
1111
0000
0000
1101
0000
0000
0000
0000
0000
MSb
16-Bit Instruction Word
0010
0110
0011
0111
0101
0001
0100
0nnn
0000
110s
kkkk
0000
0000
1111
kkkk
0000
xxxx
0000
0000
1nnn
0000
0000
1100
0000
0000
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
kkkk
kkkk
0000
0000
kkkk
kkkk
0000
xxxx
0000
0000
nnnn
1111
0001
kkkk
0001
0000
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
nnnn
kkkk
kkkk
0100
0111
kkkk
kkkk
0000
xxxx
0110
0101
nnnn
1111
000s
kkkk
001s
0011
LSb
PIC18FXX8
None
None
None
None
None
None
None
None
None
None
TO
C
None
None
None
None
None
None
All
GIE/GIEH,
PEIE/GIEL
None
None
TO
,
,
Affected
PD
PD
Status
DS41159B-page 281
Notes