C8051F340 datasheet(79/288 Pages) SILABS

79 / 288 page

Rev. 1.0

C8051F340/1/2/3/4/5/6/7

9.1.2. MOVX Instruction and Program Memory

The MOVX instruction is typically used to access external data memory (Note: the C8051F340/1/2/3/4/5/6/

7 does not support off-chip data or program memory). In the CIP-51, the MOVX write instruction is used to

accesses external RAM (XRAM) and the on-chip program memory space implemented as re-programma-

ble Flash memory. The Flash access feature provides a mechanism for the CIP-51 to update program

code and use the program memory space for non-volatile data storage. Refer to

Section “12. Flash Mem-

ory” on page 113 for further details.

Table 9.1. CIP-51 Instruction Set Summary

Mnemonic

Description

Bytes

Clock

Cycles

Arithmetic Operations

ADD A, Rn

Add register to A

ADD A, direct

Add direct byte to A

ADD A, @Ri

Add indirect RAM to A

ADD A, #data

Add immediate to A

ADDC A, Rn

Add register to A with carry

ADDC A, direct

Add direct byte to A with carry

ADDC A, @Ri

Add indirect RAM to A with carry

ADDC A, #data

Add immediate to A with carry

SUBB A, Rn

Subtract register from A with borrow

SUBB A, direct

Subtract direct byte from A with borrow

SUBB A, @Ri

Subtract indirect RAM from A with borrow

SUBB A, #data

Subtract immediate from A with borrow

INC A

Increment A

INC Rn

Increment register

INC direct

Increment direct byte

INC @Ri

Increment indirect RAM

DEC A

Decrement A

DEC Rn

Decrement register

DEC direct

Decrement direct byte

DEC @Ri

Decrement indirect RAM

INC DPTR

Increment Data Pointer

MUL AB

Multiply A and B

DIV AB

Divide A by B

DA A

Decimal adjust A

Logical Operations

ANL A, Rn

AND Register to A

ANL A, direct

AND direct byte to A

ANL A, @Ri

AND indirect RAM to A

ANL A, #data

AND immediate to A

ANL direct, A

AND A to direct byte

ANL direct, #data

AND immediate to direct byte

ORL A, Rn

OR Register to A

ORL A, direct

OR direct byte to A

ORL A, @Ri

OR indirect RAM to A

ORL A, #data

OR immediate to A

C8051F340 Datasheet(PDF) 79 Page - Silicon Laboratories

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