Atmega8 Block Diagram

Atmega8 pin diagram one of the most important features of atmega8 microcontroller is that except 5 pins all other pins can be used for supporting two signals.

Atmega8 block diagram. Block diagram of the avr mcu architecture register file flash program memory program counter instruction register instruction decode data memory alu status register r1 r0 r3 r2 r5 r4 r7 r6 r9 r8 r11 r10 r13 r12 r15 r14 r17 r16 r19 r18 r21 r20 r23 r22 r25 r24 r27 xh r26 xl r29 yh r28 yl r31 zh r30 zl stack pointer. Block diagram of atmega32 eeprom data memory. It can be accessed as a separate data space in which single bytes can be read and written. Pins 910141516171819 are used for port b whereas pins 232425262728 and 1 are used for port c and pins 234561112 are used for port d.

The atmega8 provides 8 kbytes of in system programmable flash with read while write capabilities 512 bytes of eeprom 1 kbyte of sram 23 general purpose io lines 32 general purpose working registers three flexible timercounters with compare modes internal and external interrupts a serial programmable usart a byte oriented two wire serial interface a 6 channel adc eight channels in tqfp and qfnmlf packages with 10 bit accuracy a programmable watchdog timer. Temperature sensor has three input pins vcc ground. By executing powerful instructions in a single clock cycle the atmega8 is capable to perform and execute the powerful instruction using 1mips per mhz in a single clock cycle that drastically helps in optimizing the power consumption. Here find the pin diagram of atmega8 microcontroller.

Adc0 pin of the microcontroller. Block diagram figure 1. Temperature sensor is connected to the input of the adc pin ie. The circuit mainly consists of atmega8 microcontroller temperature sensor dc motor driver ic.

Where to use atmega8 microcontroller. Atmega8 is a low power cmos avr microcontroller that is mainly based on risc architecture. An atmega microcontroller is an 8 bit microcontroller with reduced instruction set risc based harvard architecture. Twi two wire interface.

All ios and peripherals are placed in the io space. Another communication device that is present in atmega8 is two wire interface. Although we have many similar microcontrollers atmega8 is popular because it is one of the cheapest microcontroller and provides many features in lesser pins. It allows designers to set up a commutation between two devices using just two wires along with a common ground connection as the twi output is made by means of open collector outputs.

It contains 1024 bytes of data eeprom memory. Atmega8l overview the atmel avr atmega8 is a low power cmos 8 bit microcontroller based on the avr risc architecture. The following figure shows the block diagram of atmega8. As the name suggest for instance atmega16 where at atmel mega mega avr and 16 1 6kb flash memory.