PIC16C57C-RC/JW 查看數據表（PDF） - Microchip Technology

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PIC16C57C-RC/JW

EPROM/ROM-Based 8-bit CMOS Microcontroller Series

Microchip Technology 

PIC16C5X

BSF

Bit Set f

Syntax:

Operands:

Operation:

[ label ] BSF f,b

0  f  31

0b7

1  (f<b>)

Status Affected: None

Encoding:

0101 bbbf ffff

Description:

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

Words:

Cycles:

Example:

1

1

BSF FLAG_REG, 7

Before Instruction

FLAG_REG =

After Instruction

FLAG_REG =

0x0A

0x8A

BTFSC

Bit Test f, Skip if Clear

Syntax:

[ label ] BTFSC f,b

Operands:

0  f  31

0b7

Operation:

skip if (f<b>) = 0

Status Affected: None

Encoding:

Description:

Words:

Cycles:

0110 bbbf ffff

If bit 'b' in register 'f' is 0 then the

next instruction is skipped.

If bit 'b' is 0 then the next instruc-

tion fetched during the current

instruction execution is discarded,

and a NOP is executed instead,

making this a 2-cycle instruction.

1

1(2)

Example:

HERE

FALSE

TRUE

BTFSC

GOTO

•

•

•

FLAG,1

PROCESS_CODE

Before Instruction

PC

= address (HERE)

After Instruction

if FLAG<1> = 0,

PC

= address (TRUE);

if FLAG<1> = 1,

PC

= address(FALSE)

BTFSS

Bit Test f, Skip if Set

Syntax:

Operands:

Operation:

[ label ] BTFSS f,b

0  f  31

0b<7

skip if (f<b>) = 1

Status Affected: None

Encoding:

0111 bbbf ffff

Description:

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

next instruction is skipped.

If bit 'b' is '1', then the next instruc-

tion fetched during the current

instruction execution, is discarded

and a NOP is executed instead,

making this a 2-cycle instruction.

Words:

1

Cycles:

1(2)

Example:

HERE

FALSE

TRUE

BTFSS

GOTO







FLAG,1

PROCESS_CODE

Before Instruction

PC

=

After Instruction

If FLAG<1> =

PC

=

if FLAG<1> =

PC

=

address (HERE)

0,

address (FALSE);

1,

address (TRUE)

DS30453E-page 52

Preliminary

 1997-2013 Microchip Technology Inc.

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