323
7530J–AVR–03/12
Atmel ATmega48/88/168 Automotive
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
BIT AND BIT-TEST INSTRUCTIONS
SBI
P,b
Set Bit in I/O Register
I/O(P,b)
←1None
2
CBI
P,b
Clear Bit in I/O Register
I/O(P,b)
←0None
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)
←1
SREG(s)
1
BCLR
s
Flag Clear
SREG(s)
←0
SREG(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)
←TNone
1
SEC
Set Carry
C
←1C
1
CLC
Clear Carry
C
←0
C
1
SEN
Set Negative Flag
N
←1N
1
CLN
Clear Negative Flag
N
←0
N
1
SEZ
Set Zero Flag
Z
←1Z
1
CLZ
Clear Zero Flag
Z
←0
Z
1
SEI
Global Interrupt Enable
I
←1I
1
CLI
Global Interrupt Disable
I
←0
I
1
SES
Set Signed Test Flag
S
←1S
1
CLS
Clear Signed Test Flag
S
←0
S
1
SEV
Set Twos Complement Overflow.
V
←1V
1
CLV
Clear Twos Complement Overflow
V
←0
V
1
SET
Set T in SREG
T
←1T
1
CLT
Clear T in SREG
T
←0
T
1
SEH
Set Half Carry Flag in SREG
H
←1H
1
CLH
Clear Half Carry Flag in SREG
H
←0
H
1
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
←KNone
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
←PNone
1
OUT
P, Rr
Out Port
P
←Rr
None
1
PUSH
Rr
Push Register on Stack
STACK
←Rr
None
2
Mnemonics
Operands
Description
Operation
Flags
#Clocks