How many instructions does Atmega328 have?

How many instructions does Atmega328 have?

There are 32 general-purpose 8-bit registers, R0–R31. All arithmetic and logic operations operate on those registers; only load and store instructions access RAM.

How many sixteen bit general purpose timers are available in the ATmega328P?

The ATmega328P is equipped with two 8-bit timer/counters and one 16-bit counter. These Timer/Counters let you… Turn on or turn off an external device at a programmed time.

Which are the 3 main registers associated with AVR ports?

Each port in AVR microcontroller has three I/O registers associated with it. They are designated as PORTx, DDRx and PINx.

How many timers does the ATmega328 have?

The Atmega328P has a total of three timer/counters named Timer/counter 0, Timer/counter 1, and Timer/counter 2. The first and last of these are both 8-bit timer/counters and have a maximum value of 255, while Timer/Counter 1 is 16 bits and its maximum is 65,535.

What is AVR microcontroller ATmega328?

ATmega328 is an 8-bit, 28-Pin AVR Microcontroller, manufactured by Microchip, follows RISC Architecture and has a flash-type program memory of 32KB. Atmega328 is the microcontroller, used in basic Arduino boards i.e Arduino UNO, Arduino Pro Mini and Arduino Nano.

How many instructions per second can AVR execute if cycle frequency is 1MHz?

1 million instructions per second
AVR can execute 1 million instructions per second if cycle frequency is 1MHz. Key Features: 32 x 8 general working purpose registers.

Which registers are used as a 16-bit register in AVR?

A very special extra role is defined for the register pairs R26:R27, R28:R29 and R30:R31. The role is so important that these pairs have extra names in assembler: X, Y and Z. These pairs are 16-bit pointer registers, able to point to adresses with max.

What is the difference between ATmega328 and Atmega328P?

There is no major functional difference between them except for power. This microcontrollers are mostly used in Arduino’s. The Atmega 328 function the same like Atmega 328p but the 328p has very low power consumption using the ATMEL’s PicoPower Features. Hence P stands for PicoPower.

What is the purpose of port registers?

The PORT register is the latch for the data to be output. When the PORT is read, the device reads the levels present on the I/O pins (not the latch). This means that care should be taken with read-modify-write commands on the ports and changing the direction of a pin from an input to an output.

What are the registers associated with each port?

There are three I/O registers associated with each port. These are as follows: Data register PORTx. Data direction register DDRx.

How many timers in AVR atmega32a microcontroller?

It means timers are totally independent of CPU. Here in this case, we will use AVR Atmega32A microcontroller which has two 8-bit and one 16-bit timer. This means we have total 3 timers in our chip. The two 8-bit timer-counter counts up to 255 and one 16-bit timer counts up to 65535. Timers are usually used in one of following mode:

What is ATMega32 PWM generator?

Pulse width Modulation(PWM) Generator: PWM is used in speed control of motors and various other applications. Atmega32 has 3 timer units, timer 0, timer 1 and timer 2 respectively. Let us start our exploration with timer 0. Timer 0 Basics

What is the difference between 8-bit and 16-bit timers in ATmega328?

Atmega328 has one 16 bit timer, which is more powerful comparing to 8-bit timers. A 16-bit timer is called Timer/Counter1. Counter1 has twice more bits than 8 bit Counter0, so you get more counts leading to longer duration and more precise timings. The 16-bit timer has the same functionality as Timer0 plus more specific ones.

What is the 0 timer in a microcontroller?

Timer 0 is a 8 bit timer. It basically means it can count from 0 to 2^8 255. The operation of timer 0 is straight forward. The TCNT0 register hold the timer Count and it is incremented on every timer “tick”. If the timer is turned on it ticks from 0 to 255 and overflows.