Atmel AVR User Manual

85. NOP – No Operation
85.1. Description
This instruction performs a single cycle No Operation.
Operation:
(i) No
Syntax: Operands: Program Counter:
(i) NOP None PC ← PC + 1
16-bit Opcode:
0000 0000 0000 0000
85.2. Status Register (SREG) and Boolean Formula
I T H S V N Z C
– – – – – – – –
Example:
clr r16 ; Clear r16
ser r17 ; Set r17
out $18,r16 ; Write zeros to Port B
nop ; Wait (do nothing)
out $18,r17 ; Write ones to Port B
Words 1 (2 bytes)
Cycles 1
Atmel AVR Instruction Set Manual [OTHER]
Atmel-0856L-AVR-Instruction-Set-Manual_Other-11/2016
131

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