EM78P458/459
8-Bit Microcontroller with OTP ROM
50 • Product Specification (V1.4) 06.25.2004
(This specification is subject to change without further notice)
Table 16 The list of the instruction set of EM78P458/459
INSTRUCTION
BINARY HEX MNEMONIC OPERATION STATUS AFFECTED
0 0000 0000 0000 0000 NOP No Operation None
0 0000 0000 0001 0001 DAA Decimal Adjust A C
0 0000 0000 0010 0002 CONTW A → CONT None
0 0000 0000 0011 0003 SLEP 0 → WDT, Stop oscillator T,P
0 0000 0000 0100 0004 WDTC 0 → WDT T,P
0 0000 0000 rrrr 000r IOW R A → IOCR None <Note1>
0 0000 0001 0000 0010 ENI Enable Interrupt None
0 0000 0001 0001 0011 DISI Disable Interrupt None
0 0000 0001 0010 0012 RET [Top of Stack] → PC None
0 0000 0001 0011 0013 RETI [Top of Stack] → PC, Enable
Interrupt None
0 0000 0001 0100 0014 CONTR CONT → A None
0 0000 0001 rrrr 001r IOR R IOCR → A None <Note1>
0 0000 01rr rrrr 00rr MOV R,A A → R None
0 0000 1000 0000 0080 CLRA 0 → A Z
0 0000 11rr rrrr 00rr CLR R 0 → R Z
0 0001 00rr rrrr 01rr SUB A,R R-A → A Z,C,DC
0 0001 01rr rrrr 01rr SUB R,A R-A → R Z,C,DC
0 0001 10rr rrrr 01rr DECA R R-1 → A Z
0 0001 11rr rrrr 01rr DEC R R-1 → R Z
0 0010 00rr rrrr 02rr OR A,R A ∨ VR → A Z
0 0010 01rr rrrr 02rr OR R,A A ∨ VR → R Z
0 0010 10rr rrrr 02rr AND A,R A & R → A Z
0 0010 11rr rrrr 02rr AND R,A A & R → R Z
0 0011 00rr rrrr 03rr XOR A,R A ⊕ R → A Z
0 0011 01rr rrrr 03rr XOR R,A A ⊕ R → R Z
0 0011 10rr rrrr 03rr ADD A,R A + R → A Z,C,DC
0 0011 11rr rrrr 03rr ADD R,A A + R → R Z,C,DC
0 0100 00rr rrrr 04rr MOV A,R R → A Z
0 0100 01rr rrrr 04rr MOV R,R R → R Z
0 0100 10rr rrrr 04rr COMA R /R → A Z
0 0100 11rr rrrr 04rr COM R /R → R Z
0 0101 00rr rrrr 05rr INCA R R+1 → A Z
0 0101 01rr rrrr 05rr INC R R+1 → R Z
0 0101 10rr rrrr 05rr DJZA R R-1 → A, skip if zero None
0 0101 11rr rrrr 05rr DJZ R R-1 → R, skip if zero None
0 0110 00rr rrrr 06rr RRCA R R(n) → A(n-1),
R(0) → C, C → A(7) C
0 0110 01rr rrrr 06rr RRC R R(n) → R(n-1),
R(0) → C, C → R(7) C
0 0110 10rr rrrr 06rr RLCA R R(n) → A(n+1),
R(7) → C, C → A(0) C
0 0110 11rr rrrr 06rr RLC R R(n) → R(n+1),
R(7) → C, C → R(0) C
0 0111 00rr rrrr 07rr SWAPA R R(0-3) → A(4-7),
R(4-7) → A(0-3) None
0 0111 01rr rrrr 07rr SWAP R R(0-3) ↔ R(4-7) None
0 0111 10rr rrrr 07rr JZA R R+1 → A, skip if zero None
0 0111 11rr rrrr 07rr JZ R R+1 → R, skip if zero None
0 100b bbrr rrrr 0xxx BC R,b 0 → R(b) None <Note2>
0 101b bbrr rrrr 0xxx BS R,b 1 → R(b) None <Note3>
0 110b bbrr rrrr 0xxx JBC R,b if R(b)=0, skip None