PIC17C44-08SLASHP datasheet(116/240 Pages) MICROCHIP

номер детали	PIC17C44-08/P

подробное описание детали	High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

PDF	240 Pages

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производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

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116 / 240 page

PIC17C4X

DS30412C-page 116

BTFSS

Bit Test, skip if Set

Syntax:

[

label ] BTFSS f,b

Operands:

≤ f ≤ 127

≤ b < 7

Operation:

skip if (f<b>) = 1

Status Affected:

None

Encoding:

1001

0bbb

ffff

Description:

If bit 'b' in register 'f' is 1 then the next

instruction is skipped.

If bit 'b' is 1, then the next instruction

fetched during the current instruction exe-

cution, is discarded and an NOP is exe-

cuted instead, making this a two-cycle

instruction.

Words:

Cycles:

1(2)

Q Cycle Activity:

Decode

Read

Execute

NOP

If skip:

Forced NOP

NOP

Execute

NOP

Example:

HERE

FALSE

TRUE

BTFSS

FLAG,1

Before Instruction

address (HERE)

After Instruction

If FLAG<1>

address (FALSE)

If FLAG<1>

address (TRUE)

BTG

Bit Toggle f

Syntax:

[

label ] BTG f,b

Operands:

≤ f ≤ 255

≤ b < 7

Operation:

(f<b>)

→ (f<b>)

Status Affected:

None

Encoding:

0011

1bbb

ffff

Description:

Bit 'b' in data memory location 'f' is

inverted.

Words:

Cycles:

Q Cycle Activity:

Decode

Read

Execute

Write

Example:

BTG

PORTC,

Before Instruction:

PORTC

0111 0101

[0x75]

After Instruction:

PORTC

0110 0101

[0x65]

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