12F683 datasheet(101/148 Pages) MICROCHIP

101 / 148 page

 2004 Microchip Technology Inc.

Preliminary

DS41211B-page 99

PIC12F683

DECFSZ

Decrement f, Skip if 0

Syntax:

[ label ] DECFSZ f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) – 1

→ (destination);

skip if result = 0

Status Affected:

None

Description:

The contents of register ‘f’ are

decremented. If ‘d’ is ‘0’, the result

is placed in the W register. If ‘d’ is

‘1’, the result is placed back in

If the result is ‘1’, the next

instruction is executed. If the result

is ‘0’, then a NOP is executed

instead, making it a 2-cycle

instruction.

GOTO

Unconditional Branch

Syntax:

[ label ]

GOTO k

Operands:

≤ k ≤ 2047

Operation:

→ PC<10:0>

PCLATH<4:3>

→ PC<12:11>

Status Affected:

None

Description:

GOTO

is an unconditional branch.

The eleven-bit immediate value is

loaded into PC bits <10:0>. The

upper bits of PC are loaded from

PCLATH<4:3>. GOTO is a

two-cycle instruction.

INCF

Increment f

Syntax:

[ label ]

INCF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) + 1

→ (destination)

Status Affected:

Description:

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

INCFSZ

Increment f, Skip if 0

Syntax:

[ label ]

INCFSZ f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f) + 1

→ (destination),

skip if result = 0

Status Affected:

None

Description:

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

If the result is ‘1’, the next

instruction is executed. If the

result is ‘0’, a NOP is executed

instead, making it a 2-cycle

instruction.

MOVF

Move f

Syntax:

[ label ]

MOVF f,d

Operands:

≤ f ≤ 127

∈ [0,1]

Operation:

(f)

→ (dest)

Status Affected:

Encoding:

1000

dfff

ffff

Description:

The contents of register ‘f’ are

moved to a destination

dependent upon the status of ‘d’.

If ‘d’ = 0, destination is W register.

If ‘d’ = 1, the destination is file

test a file register since status flag

Z is affected.

Words:

Cycles:

Example:

MOVF

FSR,

After Instruction

value in FSR register

Z= 1

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