54
8068C–AVR–06/08
XMEGA A3
31. Instruction Set Summary
Mnemonics Operands Description Operation Flags #Clocks
Arithmetic and Logic Instructions
ADD Rd, Rr Add without Carry Rd ← Rd + Rr Z,C,N,V,S,H 1
ADC Rd, Rr Add with Carry Rd ← Rd + Rr + C Z,C,N,V,S,H 1
ADIW Rd, K Add Immediate to Word Rd ← Rd + 1:Rd + K Z,C,N,V,S 2
SUB Rd, Rr Subtract without Carry Rd ← Rd - Rr Z,C,N,V,S,H 1
SUBI Rd, K Subtract Immediate Rd ← Rd - K Z,C,N,V,S,H 1
SBC Rd, Rr Subtract with Carry Rd ← Rd - Rr - C Z,C,N,V,S,H 1
SBCI Rd, K Subtract Immediate with Carry Rd ← Rd - K - C Z,C,N,V,S,H 1
SBIW Rd, K Subtract Immediate from Word Rd + 1:Rd ← Rd + 1:Rd - K Z,C,N,V,S 2
AND Rd, Rr Logical AND Rd ← Rd • Rr Z,N,V,S 1
ANDI Rd, K Logical AND with Immediate Rd ← Rd • K Z,N,V,S 1
OR Rd, Rr Logical OR Rd ← Rd v Rr Z,N,V,S 1
ORI Rd, K Logical OR with Immediate Rd ← Rd v K Z,N,V,S 1
EOR Rd, Rr Exclusive OR Rd ← Rd ⊕ Rr Z,N,V,S 1
COM Rd One’s Complement Rd ← $FF - Rd Z,C,N,V,S 1
NEG Rd Two’s Complement Rd ← $00 - Rd Z,C,N,V,S,H 1
SBR Rd,K Set Bit(s) in Register Rd ← Rd v K Z,N,V,S 1
CBR Rd,K Clear Bit(s) in Register Rd ← Rd • ($FFh - K) Z,N,V,S 1
INC Rd Increment Rd ← Rd + 1 Z,N,V,S 1
DEC Rd Decrement Rd ← Rd - 1 Z,N,V,S 1
TST Rd Test for Zero or Minus Rd ← Rd • Rd Z,N,V,S 1
CLR Rd Clear Register Rd ← Rd ⊕ Rd Z,N,V,S 1
SER Rd Set Register Rd ← $FF None 1
MUL Rd,Rr Multiply Unsigned R1:R0 ← Rd x Rr (UU) Z,C 2
MULS Rd,Rr Multiply Signed R1:R0 ← Rd x Rr (SS) Z,C 2
MULSU Rd,Rr Multiply Signed with Unsigned R1:R0 ← Rd x Rr (SU) Z,C 2
FMUL Rd,Rr Fractional Multiply Unsigned R1:R0 ← Rd x Rr<<1 (UU) Z,C 2
FMULS Rd,Rr Fractional Multiply Signed R1:R0
← Rd x Rr<<1 (SS) Z,C 2
FMULSU Rd,Rr Fractional Multiply Signed with Unsigned R1:R0 ← Rd x Rr<<1 (SU) Z,C 2
DES K Data Encryption if (H = 0) then R15:R0
else if (H = 1) then R15:R0
←
←
Encrypt(R15:R0, K)
Decrypt(R15:R0, K)
1/2
Branch Instructions
RJMP k Relative Jump PC ← PC + k + 1 None 2
IJMP Indirect Jump to (Z) PC(15:0)
PC(21:16)
←
←
Z,
0
None 2
EIJMP Extended Indirect Jump to (Z) PC(15:0)
PC(21:16)
←
←
Z,
EIND
None 2
JMP k Jump PC ← k None 3
RCALL k Relative Call Subroutine PC ← PC + k + 1 None 2 / 3
(1)
ICALL Indirect Call to (Z) PC(15:0)
PC(21:16)
←
←
Z,
0
None 2 / 3
(1)
EICALL Extended Indirect Call to (Z) PC(15:0)
PC(21:16)
←
←
Z,
EIND
None 3
(1)
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