DS80C320 datasheet(9/42 Pages) DALLAS

9 / 42 page

DS80C320/DS80C323

9 of 42

Data Transfer

Instructions:

MOV A, Rn

MOVC A, @A+DPTR

MOV A, direct

MOVC A, @A+PC

MOV A, @Ri

MOVX A, @Ri

8-36*

MOV A, #data

MOVX A, @DPTR

8-36*

MOV Rn, A

MOVX @Ri, A

8-36*

MOV Rn, direct

MOVX @DPTR, A

8-36*

MOV Rn, #data

PUSH direct

MOV direct, A

POP direct

MOV direct, Rn

XCH A, Rn

MOV direct1, direct2

XCH A, direct

MOV direct, @Ri

XCH A, @Ri

MOV direct, #data

XCHD A, @Ri

MOV @Ri, A

MOV @Ri, direct

MOV @Ri, #data

MOV DPTR, #data 16

*User Selectable

Bit Manipulation

Instructions:

CLR C

ANL C, bit

CLR bit

ANL C, bit

SETB C

ORL C, bit

SETB bit

ORL C, bit

CPL C

MOV C, bit

CPL bit

MOV bit, C

Program Branching

Instructions:

ACALL addr 11

CJNE A, direct, rel

LCALL addr 16

CJNE A, #data, rel

RET

CJNE Rn, #data, rel

RETI

CJNE Ri, #data, rel

AJMP addr 11

NOP

LJMP addr 16

JC rel

SJMP rel

JNC rel

JMP @A+DPTR

JB bit, rel

JZ rel

JNB bit, rel

JNZ rel

JBC bit, rel

DJNZ Rn, rel

DJNZ direct, rel

The table above shows the speed for each class of instruction. Note that many of the instructions have

multiple opcodes. There are 255 opcodes for 111 instructions. Of the 255 opcodes, 159 are three times

faster than the original 80C32. While a system that emphasizes those instructions will see the most

improvement, the large total number that receive a 3 to 1 improvement assure a dramatic speed increase

for any system. The speed improvement summary is provided below.

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