PIC16C641 Datasheet

IC型号：
PIC16C641
PDF描述：
8-Bit EPROM Microcontrollers with Analog Comparators
文件大小：
661.21KB
PDF页数：
137页
芯片厂家：
MICROCHIP

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PIC16C64X & PIC16C66X

NOP

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Example

NOP

No Operation

[

label

]

None

No operation

None

0000

0xx0

0000

RETFIE

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Return from Interrupt

[

label

]

None

TOS

鈫?/div>

PC,

鈫?/div>

GIE

None

0000

1001

Return from Interrupt. Stack is POPed

and Top of Stack (TOS) is loaded in

the PC. Interrupts are enabled by set-

ting Global Interrupt Enable bit, GIE

(INTCON<7>). This is a two cycle

instruction.

NOP

RETFIE

No operation.

Words:

Cycles:

Example

RETFIE

After Interrupt

PC =

GIE =

TOS

OPTION

Syntax:

Operands:

Operation:

Encoding:

Description:

Load Option Register

[

label

]

None

(W)

鈫?/div>

OPTION

0000

0110

0010

RETLW

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Return with Literal in W

[

label

]

RETLW k

鈮?/div>

255

鈫?/div>

(W);

TOS

鈫?/div>

None

01xx

kkkk

The W register is loaded with the eight

bit literal 'k'. The program counter is

loaded from the top of the stack (the

return address). This is a two cycle

instruction.

OPTION

Status Affected: None

The contents of the W register are

loaded in the OPTION register. This

instruction is supported for code com-

patibility with PIC16C5X products.

Since OPTION is a readable/writable

it.

Words:

Cycles:

Example

To maintain upward compatibility

with future PIC16CXX products, do

not use this instruction.

Words:

Cycles:

Example

CALL TABLE

鈥?/div>

TABLE ADDWF

RETLW

鈥?/div>

RETLW

;W contains table

;offset value

;W now has table value

;W = offset

;Begin table

;

; End of table

Before Instruction

0x07

value of k8

After Instruction

DS30559A-page 82

漏

1996 Microchip Technology Inc.

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