PIC16C621A Datasheet

IC型号：
PIC16C621A
PDF描述：
EPROM-Based 8-Bit CMOS Microcontrollers
文件大小：
2148.18KB
PDF页数：
128页
芯片厂家：
Microchip

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PIC16C62X

GOTO

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Unconditional Branch

[

label

]

GOTO k

鈮?/div>

2047

鈫?/div>

PC<10:0>

PCLATH<4:3>

鈫?/div>

PC<12:11>

None

1kkk

kkkk

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.

INCFSZ

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Increment f, Skip if 0

[

label

]

INCFSZ f,d

鈮?/div>

127

鈭?/div>

[0,1]

(f) + 1

鈫?/div>

(dest), skip if result = 0

None

1111

dfff

ffff

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 register 'f'.

If the result is 0, the next instruction,

which is already fetched, is discarded.

A NOP is executed instead making it

a two-cycle instruction

Words:

Cycles:

Example

GOTO THERE

Words:

Cycles:

Address

THERE

1(2)

INCFSZ

GOTO

CONTINUE 鈥?/div>

鈥?/div>

HERE

CNT,

LOOP

After Instruction

PC =

Example

Before Instruction

address

HERE

CNT + 1

address

CONTINUE

address

HERE +1

After Instruction

CNT =

if CNT=

if CNT鈮?/div>

INCF

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Increment f

[

label

]

INCF f,d

鈮?/div>

127

鈭?/div>

[0,1]

(f) + 1

鈫?/div>

(dest)

1010

dfff

ffff

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 register 'f'.

IORLW

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Inclusive OR Literal with W

[

label

]

IORLW k

鈮?/div>

255

(W) .OR. k

鈫?/div>

(W)

1000

kkkk

The contents of the W register is

OR鈥檈d with the eight bit literal 'k'. The

result is placed in the W register

Words:

Cycles:

Example

IORLW

0x35

0x9A

0xBF

Words:

Cycles:

Example

INCF

CNT, 1

CNT

0xFF

0x00

Before Instruction

After Instruction

Before Instruction

After Instruction

CNT

漏

1998 Microchip Technology Inc.

Preliminary

DS30235G-page 67

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