Datasheet

ATmega48/88/168 Automotive [DATASHEET]
7530K–AVR–07/14
292
30. Instruction Set Summary
Mnemonics Operands Description Operation Flags #Clocks
Arithmetic and Logic Instructions
ADD Rd, Rr Add two registers Rd ← Rd + Rr Z,C,N,V,H 1
ADC Rd, Rr Add with carry two registers Rd ← Rd + Rr + C Z,C,N,V,H 1
ADIW Rdl, K Add immediate to word Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S 2
SUB Rd, Rr Subtract two registers Rd ← Rd – Rr Z,C,N,V,H 1
SUBI Rd, K Subtract constant from register Rd ← Rd – K Z,C,N,V,H 1
SBC Rd, Rr Subtract with carry two registers Rd ← Rd – Rr – C Z,C,N,V,H 1
SBCI Rd, K Subtract with carry constant from reg. Rd ← Rd – K – C Z,C,N,V,H 1
SBIW Rdl, K Subtract immediate from word Rdh:Rdl ← Rdh:Rdl - K Z,C,N,V,S 2
AND Rd, Rr Logical AND registers Rd ← Rd × Rr Z,N,V 1
ANDI Rd, K Logical AND register and constant Rd ← Rd × K Z,N,V 1
OR Rd, Rr Logical OR registers Rd ← Rd v Rr Z,N,V 1
ORI Rd, K Logical OR register and constant Rd ← Rd v K Z,N,V 1
EOR Rd, Rr Exclusive OR registers Rd ← Rd ⊕ Rr Z,N,V 1
COM Rd One’s complement Rd ← 0xFF − Rd Z,C,N,V 1
NEG Rd Two’s complement Rd ← 0x00 − Rd Z,C,N,V,H 1
SBR Rd, K Set bit(s) in register Rd ← Rd v K Z,N,V 1
CBR Rd, K Clear bit(s) in register Rd ← Rd × (0xFF - K) Z,N,V 1
INC Rd Increment Rd ← Rd + 1 Z,N,V 1
DEC Rd Decrement Rd ← Rd – 1 Z,N,V 1
TST Rd Test for zero or minus Rd ← Rd × Rd Z,N,V 1
CLR Rd Clear register Rd ← Rd ⊕ Rd Z,N,V 1
SER Rd Set register Rd ← 0xFF None 1
MUL Rd, Rr Multiply unsigned R1:R0 ← Rd x Rr Z,C 2
MULS Rd, Rr Multiply signed R1:R0 ← Rd x Rr Z,C 2
MULSU Rd, Rr Multiply signed with unsigned R1:R0 ← Rd x Rr Z,C 2
FMUL Rd, Rr Fractional multiply unsigned R1:R0 ← (Rd x Rr) << 1 Z,C 2
FMULS Rd, Rr Fractional multiply signed R1:R0 ← (Rd x Rr) << 1 Z,C 2
FMULSU Rd, Rr Fractional multiply signed with unsigned R1:R0 ← (Rd x Rr) << 1 Z,C 2
Branch Instructions
RJMP k Relative jump PC ← PC + k + 1 None 2
IJMP Indirect jump to (Z) PC ← Z None 2
JMP
(1)
k Direct jump PC ← k None 3
RCALL k Relative subroutine call PC ← PC + k + 1 None 3
ICALL Indirect call to (Z) PC ← Z None 3
CALL
(1)
k Direct subroutine call PC ← k None 4
RET Subroutine return PC ← STACK None 4
RETI Interrupt return PC ← STACK I 4
CPSE Rd, Rr Compare, skip if equal if (Rd = Rr) PC ← PC + 2 or 3 None 1/2/3
CP Rd, Rr Compare Rd − Rr Z,N,V,C,H 1
CPC Rd, Rr Compare with carry Rd − Rr − C Z,N,V,C,H 1
Note: 1. These instructions are only available in Atmel
®
ATmega168.