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A000003

更新时间： 2022-09-27 10:27:29

品牌	Logo	应用领域
爱特美尔 - ATMEL		闪存微控制器
页数	文件大小	规格书
35页	489K
描述
8-bit Atmel Microcontroller with 4/8/16/32K Bytes In-System Programmable Flash

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A000003 数据手册

ATmega48A/PA/88A/PA/168A/PA/328/P

2. Overview

The ATmega48A/PA/88A/PA/168A/PA/328/P 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.

2.1

Block Diagram

Figure 2-1. Block Diagram

Watchdog

Timer

Power

Supervision

POR / BOD &

RESET

debugWIRE

Watchdog

Oscillator

PROGRAM

LOGIC

Oscillator

Circuits /

Clock

Flash

SRAM

Generation

CPU

EEPROM

AVCC

AREF

GND

8bit T/C 0

8bit T/C 2

16bit T/C 1

A/D Conv.

Analog

Comp.

Internal

Bandgap

USART 0

PORT D (8)

PD[0..7]

SPI

PORT B (8)

PB[0..7]

TWI

PORT C (7)

PC[0..6]

RESET

XTAL[1..2]

ADC[6..7]

The AVR core combines a rich instruction set with 32 general purpose working registers. All the

32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent

registers to be accessed in one single instruction executed in one clock cycle. The resulting

8271DS–AVR–05/11

1 2 3 456 7 8...35

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