AT80251G2D-3CSUM(2006) View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT80251G2D-3CSUM
(Rev.:2006)

8/16-bit Microcontroller with Serial Communication Interfaces

Atmel Corporation 

Table 25. Summary of Move Instructions (1/3)

Move to High wordMOVH <dest>, <src>dest opnd31:16 ← src opnd

Move with Sign extensionMOVS <dest>, <src>dest opnd ← src opnd with sign extend

Move with Zero extensionMOVZ <dest>, <src>dest opnd ← src opnd with zero extend

Move CodeMOVC A, <src>(A) ← src opnd

Move eXtendedMOVX <dest>, <src>dest opnd ← src opnd

Mnemonic

<dest>,

<src>(2)

Comments

Binary Mode Source Mode

Bytes States Bytes States

MOVH

DRk, #data16

16-bit immediate data into upper

word of dword register

5

3

4

2

MOVS

WRj, Rm

Byte register to word register with

sign extension

3

2

2

1

MOVZ

WRj, Rm

Byte register to word register with

zeros extension

3

2

2

1

MOVC

A, at A +DPTR

Code byte relative to DPTR to

ACC

1

6(3)

1

6(3)

A, at A +PC Code byte relative to PC to ACC

1

6(3)

1

6(3)

A, at Ri

Extended memory (8-bit address)

to ACC(2)

1

4

1

5

MOVX

A, at DPTR

at Ri, A

Extended memory (16-bit

address) to ACC(2)

ACC to extended memory (8-bit

address)(2)

1

3(4)

1

3(4)

1

4

1

4

at DPTR, A

ACC to extended memory (16-bit

address)(2)

1

4(3)

1

4(3)

Notes:

1. A shaded cell denotes an instruction in the C51 Architecture.

2. Extended memory addressed is in the region specified by DPXL (reset value = 01h).

3. If this instruction addresses external memory location, add N+1 to the number of

states (N: number of wait states).

4. If this instruction addresses external memory location, add N+2 to the number of

states (N: number of wait states).

30 AT/TSC8x251G2D

4135F–8051–11/06

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