PIC18F4539T-IML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F4539T-IML

Enhanced FLASH Microcontrollers with Single Phase Induction Motor Control Kernel

Microchip Technology 

PIC18FXX39

TSTFSZ

Test f, skip if 0

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

[ label ] TSTFSZ f [,a]

0  f  255

a  [0,1]

skip if f = 0

None

0110 011a ffff ffff

If 'f' = 0, the next instruction,

fetched during the current instruc-

tion execution, is discarded and a

NOP is executed, making this a two-

cycle instruction. If ‘a’ is 0, the

Access Bank will be selected, over-

riding the BSR value. If ‘a’ is 1,

then the bank will be selected as

per the BSR value (default).

Words:

1

Cycles:

1(2)

Note: 3 cycles if skip and followed

by a 2-word instruction.

Q Cycle Activity:

Q1

Q2

Decode

Read

register 'f'

Q3

Process

Data

Q4

No

operation

If skip:

Q1

No

operation

Q2

No

operation

Q3

No

operation

Q4

No

operation

If skip and followed by 2-word instruction:

Q1

Q2

Q3

Q4

No

operation

No

operation

No

operation

No

operation

No

operation

No

operation

No

operation

No

operation

Example:

HERE TSTFSZ CNT, 1

NZERO :

ZERO :

Before Instruction

PC = Address (HERE)

After Instruction

If CNT

PC

If CNT

PC

= 0x00,

= Address (ZERO)

 0x00,

= Address (NZERO)

XORLW

Exclusive OR literal with W

Syntax:

[ label ] XORLW k

Operands:

0 k 255

Operation:

(W) .XOR. k W

Status Affected: N, Z

Encoding:

0000 1010 kkkk kkkk

Description:

The contents of W are XORed

with the 8-bit literal 'k'. The result

is placed in W.

Words:

1

Cycles:

1

Q Cycle Activity:

Q1

Q2

Q3

Q4

Decode

Read

literal 'k'

Process

Data

Write to W

Example:

XORLW 0xAF

Before Instruction

W

= 0xB5

After Instruction

W

= 0x1A

 2002-2013 Microchip Technology Inc.

Preliminary

DS30485B-page 251

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