PIC16LC558-04/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16LC558-04/SO

ERROM-based 8-Bit CMOS microcontroller

Microchip Technology 

PIC16C55X

INCFSZ

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Example

Increment f, Skip if 0

[ label ] INCFSZ f,d

0 ≤ f ≤ 127

d ∈ [0,1]

(f) + 1 → (dest), skip if result = 0

None

00

1111 dfff ffff

The contents of register 'f' are

incremented. If 'd' is 0 the result is

placed in the W register. If 'd' is 1 the

result is placed back in register 'f'.

If the result is 0, the next instruction,

which is already fetched, is discarded.

A NOP is executed instead making it a

two-cycle instruction.

1

1(2)

HERE

INCFSZ

GOTO

CONTINUE •

•

•

CNT, 1

LOOP

Before Instruction

PC = address HERE

After Instruction

CNT = CNT + 1

if CNT = 0,

PC = address CONTINUE

if CNT ≠ 0,

PC = address HERE +1

IORLW

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Example

Inclusive OR Literal with W

[ label ] IORLW k

0 ≤ k ≤ 255

(W) .OR. k → (W)

Z

11

1000 kkkk kkkk

The contents of the W register is

OR’ed with the eight bit literal 'k'. The

result is placed in the W register.

1

1

IORLW 0x35

Before Instruction

W = 0x9A

After Instruction

W = 0xBF

Z =1

IORWF

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Example

Inclusive OR W with f

[ label ] IORWF f,d

0 ≤ f ≤ 127

d ∈ [0,1]

(W) .OR. (f) → (dest)

Z

00

0100 dfff ffff

Inclusive OR the W register with

register 'f'. If 'd' is 0 the result is placed

in the W register. If 'd' is 1 the result is

placed back in register 'f'.

1

1

IORWF

RESULT, 0

Before Instruction

RESULT = 0x13

W

= 0x91

After Instruction

RESULT = 0x13

W

= 0x93

Z

=1

MOVLW

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Example

Move Literal to W

[ label ] MOVLW k

0 ≤ k ≤ 255

k → (W)

None

11

00xx kkkk kkkk

The eight bit literal 'k' is loaded into W

register. The don’t cares will assemble

as 0’s.

1

1

MOVLW 0x5A

After Instruction

W = 0x5A

DS40143D-page 60

Preliminary

 2002 Microchip Technology Inc.

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