147
ATmega161(L)
1228C–AVR–08/02
BRTS k Branch if T-flag Set if (T = 1) then PC ← PC + k + 1 None 1/2
BRTC k Branch if T-flag Cleared if (T = 0) then PC ← PC + k + 1 None 1/2
BRVS k Branch if Overflow Flag is Set if (V = 1) then PC ← PC + k + 1 None 1/2
BRVC k Branch if Overflow Flag is Cleared if (V = 0) then PC ← PC + k + 1 None 1/2
BRIE k Branch if Interrupt Enabled if (I = 1) then PC ← PC + k + 1 None 1/2
BRID k Branch if Interrupt Disabled if (I = 0) then PC ← PC + k + 1 None 1/2
DATA TRANSFER INSTRUCTIONS
MOV Rd, Rr Move between Registers Rd ← Rr None 1
MOVW Rd, Rr Copy Register Word
Rd+1:Rd ← Rr+1:Rr
None 1
LDI Rd, K Load Immediate Rd ← K None 1
LD Rd, X Load Indirect Rd ← (X) None 2
LD Rd, X+ Load Indirect and Post-inc. Rd ← (X), X ← X + 1 None 2
LD Rd, -X Load Indirect and Pre-dec. X ← X-1,Rd← (X) None 2
LD Rd, Y Load Indirect Rd ← (Y) None 2
LD Rd, Y+ Load Indirect and Post-inc. Rd ← (Y), Y ← Y + 1 None 2
LD Rd, -Y Load Indirect and Pre-dec. Y ← Y-1,Rd← (Y) None 2
LDD Rd, Y+q Load Indirect with Displacement Rd ← (Y + q) None 2
LD Rd, Z Load Indirect Rd ← (Z) None 2
LD Rd, Z+ Load Indirect and Post-inc. Rd ← (Z), Z ← Z + 1 None 2
LD Rd, -Z Load Indirect and Pre-dec. Z ← Z-1,Rd← (Z) None 2
LDD Rd, Z+q Load Indirect with Displacement Rd ← (Z + q) None 2
LDS Rd, k Load Direct from SRAM Rd ← (k) None 2
ST X, Rr Store Indirect (X) ← Rr None 2
ST X+, Rr Store Indirect and Post-inc. (X) ← Rr, X ← X + 1 None 2
ST -X, Rr Store Indirect and Pre-dec. X ← X-1,(X)← Rr None 2
ST Y, Rr Store Indirect (Y) ← Rr None 2
ST Y+, Rr Store Indirect and Post-inc. (Y) ← Rr, Y ← Y + 1 None 2
ST -Y, Rr Store Indirect and Pre-dec. Y ← Y-1,(Y)← Rr None 2
STD Y+q, Rr Store Indirect with Displacement (Y + q) ← Rr None 2
ST Z, Rr Store Indirect (Z) ← Rr None 2
ST Z+, Rr Store Indirect and Post-inc. (Z) ← Rr, Z ← Z + 1 None 2
ST -Z, Rr Store Indirect and Pre-dec. Z ← Z-1,(Z)← Rr None 2
STD Z+q, Rr Store Indirect with Displacement (Z + q) ← Rr None 2
STS k, Rr Store Direct to SRAM (k) ← Rr None 2
LPM Load Program Memory R0 ← (Z) None 3
LPM Rd, Z Load Program Memory Rd ← (Z) None 3
LPM Rd, Z+ Load Program Memory and Post-inc. Rd ← (Z), Z ← Z + 1 None 3
SPM Store Program Memory (Z) ← R1:R0 None -
IN Rd, P In Port Rd ← P None 1
OUT P, Rr Out Port P ← Rr None 1
PUSH Rr Push Register on Stack STACK ← Rr None 2
POP Rd Pop Register from Stack Rd ← STACK None 2
BIT AND BIT-TEST INSTRUCTIONS
SBI P, b Set Bit in I/O Register I/O(P,b) ← 1 None 2
CBI P, b Clear Bit in I/O Register I/O(P,b) ← 0 None 2
LSL Rd Logical Shift Left Rd(n+1) ← Rd(n), Rd(0) ← 0 Z,C,N,V 1
LSR Rd Logical Shift Right Rd(n) ← Rd(n+1), Rd(7) ← 0 Z,C,N,V 1
ROL Rd Rotate Left through Carry Rd(0) ← C, Rd(n+1) ← Rd(n), C ← Rd(7) Z,C,N,V 1
ROR Rd Rotate Right through Carry Rd(7) ← C, Rd(n) ← Rd(n+1), C ← Rd(0) Z,C,N,V 1
ASR Rd Arithmetic Shift Right Rd(n) ← Rd(n+1), n = 0..6 Z,C,N,V 1
SWAP Rd Swap Nibbles Rd(3..0) ← Rd(7..4), Rd(7..4) ← Rd(3..0) None 1
BSET s Flag Set SREG(s) ← 1SREG(s)1
BCLR s Flag Clear SREG(s) ← 0SREG(s)1
BST Rr, b Bit Store from Register to T T ← Rr(b) T 1
BLD Rd, b Bit Load from T to Register Rd(b) ← T None 1
SEC Set Carry C ← 1C1
CLC Clear Carry C ← 0C1
SEN Set Negative Flag N ← 1N1
CLN Clear Negative Flag N ← 0N1
Instruction Set Summary (Continued)
Mnemonic Operands Description Operation Flags # Clocks
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