PIC18F44J50-I/SPSQTP 查看數據表（PDF） - Microchip Technology

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PIC18F44J50-I/SPSQTP

28/44-Pin, Low-Power, High-Performance USB Microcontrollers with nanoWatt XLP Technology

Microchip Technology 

PIC18F46J50 FAMILY

MOVFF

Move f to f

Syntax:

Operands:

Operation:

Status Affected:

MOVFF fs,fd

0  fs  4095

0  fd  4095

(fs)  fd

None

Encoding:

1st word (source)

2nd word (destin.)

Description:

1100

1111

ffff

ffff

ffff

ffff

ffffs

ffffd

The contents of source register, ‘fs’, are

moved to destination register,‘ fd’.

Location of source ‘fs’ can be anywhere

in the 4096-byte data space (000h to

FFFh) and location of destination, ‘fd’,

can also be anywhere from 000h to

FFFh.

Either source or destination can be W

(a useful special situation).

MOVFF is particularly useful for

transferring a data memory location to

a peripheral register (such as the

transmit buffer or an I/O port).

The MOVFF instruction cannot use the

PCL, TOSU, TOSH or TOSL as the

destination register

Words:

2

Cycles:

2

Q Cycle Activity:

Q1

Decode

Decode

Q2

Read

register ‘f’

(src)

No

operation

No dummy

read

Q3

Process

Data

No

operation

Q4

No

operation

Write

register ‘f’

(dest)

Example:

MOVFF REG1, REG2

Before Instruction

REG1

REG2

= 33h

= 11h

After Instruction

REG1

REG2

= 33h

= 33h

MOVLB

Syntax:

Operands:

Operation:

Status Affected:

Encoding:

Description:

Words:

Cycles:

Q Cycle Activity:

Q1

Decode

Move Literal to Low Nibble in BSR

MOVLB k

0  k  255

k  BSR

None

0000 0001 kkkk kkkk

The eight-bit literal, ‘k’, is loaded into

the Bank Select Register (BSR). The

value of BSR<7:4> always remains ‘0’

regardless of the value of k7:k4.

1

1

Q2

Read

literal ‘k’

Q3

Process

Data

Q4

Write literal

‘k’ to BSR

Example:

MOVLB

5

Before Instruction

BSR Register = 02h

After Instruction

BSR Register = 05h

DS39931D-page 460

 2011 Microchip Technology Inc.

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