C8051F310 datasheet(81/228 Pages) SILABS

81 / 228 page

Rev. 1.7

C8051F310/1/2/3/4/5/6/7

CIP-51 Instruction Set Summary, which includes the mnemonic, number of bytes, and number of clock

cycles for each instruction.

8.1.2. MOVX Instruction and Program Memory

The MOVX instruction is typically used to access external data memory (Note: the C8051F31x does not

support external data or program memory). In the CIP-51, the MOVX write instruction is used to accesses

external RAM and the on-chip program memory space implemented as re-programmable Flash memory.

The Flash access feature provides a mechanism for the CIP-51 to update program code and use the pro-

gram memory space for non-volatile data storage. Refer to Section “10. Flash Memory” on page 111 for

further details.

Table 8.1. 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

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