Atmel AVR User Manual

Mnemonic Operands Description Op Flags
#Clocks
AVR
#Clocks
AVRxm
#Clocks
AVRxt
#Clocks
AVRrc
ROL Rd Rotate Left
Through
Carry
Rd(0)
Rd(n+1)
C
←
←
←
C
Rd(n)
Rd(7)
Z,C,N,V,H 1 1 1 1
ROR Rd Rotate Right
Through
Carry
Rd(7)
Rd(n)
C
←
←
←
C
Rd(n+1)
Rd(0)
Z,C,N,V 1 1 1 1
ASR Rd Arithmetic
Shift Right
Rd(n) ← Rd(n+1),
n=0..6
Z,C,N,V 1 1 1 1
SWAP Rd Swap Nibbles Rd(3..0) ↔ Rd(7..4) None 1 1 1 1
SBI A, b Set Bit in I/O
Register
I/O(A, b) ← 1 None 2 1 1 1
CBI A, b Clear Bit in
I/O Register
I/O(A, b) ← 0 None 2 1 1 1
BST Rr, b Bit Store from
Register to T
T ← Rr(b) T 1 1 1 1
BLD Rd, b Bit load from
T to Register
Rd(b) ← T None 1 1 1 1
BSET s Flag Set SREG(s) ← 1 SREG(s) 1 1 1 1
BCLR s Flag Clear SREG(s) ← 0 SREG(s) 1 1 1 1
SEC Set Carry C ← 1 C 1 1 1 1
CLC Clear Carry C ← 0 C 1 1 1 1
SEN Set Negative
Flag
N ← 1 N 1 1 1 1
CLN Clear
Negative Flag
N ← 0 N 1 1 1 1
SEZ Set Zero Flag Z ← 1 Z 1 1 1 1
CLZ Clear Zero
Flag
Z ← 0 Z 1 1 1 1
SEI Global
Interrupt
Enable
I ← 1 I 1 1 1 1
CLI Global
Interrupt
Disable
I ← 0 I 1 1 1 1
SES Set Signed
Test Flag
S ← 1 S 1 1 1 1
CLS Clear Signed
Test Flag
S ← 0 S 1 1 1 1
SEV Set Two’s
Complement
Overflow
V ← 1 V 1 1 1 1
CLV Clear Two’s
Complement
Overflow
V ← 0 V 1 1 1 1
SET Set T in
SREG
T ← 1 T 1 1 1 1
CLT Clear T in
SREG
T ← 0 T 1 1 1 1
Atmel AVR Instruction Set Manual [OTHER]
Atmel-0856L-AVR-Instruction-Set-Manual_Other-11/2016
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Atmel AVR Specifications

General

Architecture	8-bit RISC
SRAM	Up to 16 KB
Clock Speed	Up to 20 MHz
Operating Voltage	1.8V to 5.5V
ADC	10-bit ADC
Communication Interfaces	SPI, I2C, USB
Packages	DIP, SOIC, QFN
Special Features	Watchdog Timer
Flash Memory	1KB to 256KB
EEPROM	64B to 4KB