C8051F300_08 Datasheet, PDF (59/179 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F300/1/2/3/4/5
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 C8051F300/1/2/3/4/5
does not support external data or program memory). In the CIP-51, the MOVX instruction accesses the on-
chip program memory space implemented as re-programmable Flash memory. This 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 “10. Flash Memory” on page 89 for further details.
Mnemonic
ADD A, Rn
ADD A, direct
ADD A, @Ri
ADD A, #data
ADDC A, Rn
ADDC A, direct
ADDC A, @Ri
ADDC A, #data
SUBB A, Rn
SUBB A, direct
SUBB A, @Ri
SUBB A, #data
INC A
INC Rn
INC direct
INC @Ri
DEC A
DEC Rn
DEC direct
DEC @Ri
INC DPTR
MUL AB
DIV AB
DA A
ANL A, Rn
ANL A, direct
ANL A, @Ri
ANL A, #data
Table 8.1. CIP-51 Instruction Set Summary
Description
Bytes
Arithmetic Operations
Add register to A
1
Add direct byte to A
2
Add indirect RAM to A
1
Add immediate to A
2
Add register to A with carry
1
Add direct byte to A with carry
2
Add indirect RAM to A with carry
1
Add immediate to A with carry
2
Subtract register from A with borrow
1
Subtract direct byte from A with borrow
2
Subtract indirect RAM from A with borrow
1
Subtract immediate from A with borrow
2
Increment A
1
Increment register
1
Increment direct byte
2
Increment indirect RAM
1
Decrement A
1
Decrement register
1
Decrement direct byte
2
Decrement indirect RAM
1
Increment Data Pointer
1
Multiply A and B
1
Divide A by B
1
Decimal adjust A
1
Logical Operations
AND Register to A
1
AND direct byte to A
2
AND indirect RAM to A
1
AND immediate to A
2
Clock
Cycles
1
2
2
2
1
2
2
2
1
2
2
2
1
1
2
2
1
1
2
2
1
4
8
1
1
2
2
2
Rev. 2.9
59