ATmega328P PDF - 8-bit AVR RISC-based Microcontroller

Part Number: ATmega328P

Function: 8-bit AVR RISC-based Microcontroller

Package: TQFT, MLF 32 Pin

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ATmega328P datasheet

Overview

The ATmega328P is a low-power CMOS 8-bit microcontroller based on the AVR

enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega48A / PA/ 88A / PA / 168A / PA /328 / P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

The high-performance Atmel picoPower 8-bit AVR RISC-based microcontroller combines 32KB ISP flash memory with read-while-write capabilities, 1024B EEPROM, 2KB SRAM, 23 general purpose I/O lines, 32 general purpose working registers, three flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI serial port, a 6-channel 10-bit A/D converter (8-channels in TQFP and QFN/MLF packages), programmable watchdog timer with internal oscillator, and five software selectable power saving modes. The device operates between 1.8-5.5 volts.

ATmega328P Pinout

Special microcontroller features

1. Power-on reset and programmable brown-out detection
2. Internal calibrated oscillator
3. External and internal interrupt sources
4. Six sleep modes: Idle, ADC noise reduction, power-save, power-down, standby,
and extended standby

Block Diagram

The 8-bit microcontroller is so named because its CPU can process data in 8-bit chunks. This means that it can handle data values between 0 and 255 (2^8). The 8-bit microcontroller is typically used for applications that require low-cost, low-power, and low-complexity solutions, such as in consumer electronics, automotive systems, and industrial control systems.

One example of an 8-bit microcontroller is the Atmel AVR, which is commonly used in embedded systems and is known for its low power consumption and ease of use. Other examples include the Microchip PIC, the Freescale HC08, and the Intel 8051.