328P 데이터 시트보기 (PDF) - Atmel Corporation

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328P

ATMEL 8-BIT MICROCONTROLLER WITH 4/8/16/32KBYTES IN-SYSTEM PROGRAMMABLE FLASH

Atmel Corporation 

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

Watchdog

Oscillator

Oscillator

Circuits /

Clock

Generation

EEPROM

Power

Supervision

POR / BOD &

RESET

Flash

debugWIRE

PROGRAM

LOGIC

SRAM

CPU

8bit T/C 0

8bit T/C 2

16bit T/C 1

Analog

Comp.

2

A/D Conv.

Internal

6

Bandgap

AVCC

AREF

GND

USART 0

SPI

TWI

PORT D (8)

PORT B (8)

PORT C (7)

RESET

XTAL[1..2]

PD[0..7]

PB[0..7]

PC[0..6]

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 architecture is more code efficient while achieving

throughputs up to ten times faster than conventional CISC microcontrollers.

ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]

6

Atmel-8271IS-AVR- ATmega-Datasheet_10/2014

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