PIC17CR42-08/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC17CR42-08/SP

High-performance 8-Bit CMOS EPROM, ROM microcontroller

Microchip Technology 

PIC17C4X

ANDWF

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

AND WREG with f

[ label ] ANDWF f,d

0 ≤ f ≤ 255

d ∈ [0,1]

(WREG) .AND. (f) → (dest)

Z

0000 101d ffff ffff

The contents of WREG are AND’ed with

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

in WREG. If 'd' is 1 the result is stored

back in register 'f'.

1

1

Q2

Read

register 'f'

Q3

Execute

Q4

Write to

destination

Example:

ANDWF REG, 1

Before Instruction

WREG = 0x17

REG = 0xC2

After Instruction

WREG = 0x17

REG = 0x02

BCF

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

Bit Clear f

[ label ] BCF f,b

0 ≤ f ≤ 255

0≤b≤7

0 → (f<b>)

None

1000 1bbb ffff

Bit 'b' in register 'f' is cleared.

1

1

ffff

Q2

Read

register 'f'

Q3

Execute

Q4

Write

register 'f'

Example:

BCF

Before Instruction

FLAG_REG = 0xC7

After Instruction

FLAG_REG = 0x47

FLAG_REG, 7

DS30412C-page 114

© 1996 Microchip Technology Inc.

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