ATMEGA32A-AU 데이터 시트보기 (PDF) - Atmel Corporation

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ATMEGA32A-AU

8-bit AVR® Microcontroller with 32K Bytes In-System Programmable Flash

Atmel Corporation 

ATmega32A

2. Overview

The ATmega32A 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 ATmega32A

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

VCC

PA0 - PA7

PC0 - PC7

GND

AVCC

AREF

PORTA DRIVERS/BUFFERS

PORTA DIGITAL INTERFACE

MUX &

ADC

ADC

INTERFACE

PROGRAM

COUNTER

PROGRAM

FLASH

INSTRUCTION

REGISTER

INSTRUCTION

DECODER

CONTROL

LINES

AVR CPU

STACK

POINTER

SRAM

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

PROGRAMMING

LOGIC

SPI

+

COMP.

-

INTERFACE

PORTC DRIVERS/BUFFERS

PORTC DIGITAL INTERFACE

TWI

TIMERS/

COUNTERS

OSCILLATOR

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

MCU CTRL.

& TIMING

INTERRUPT

UNIT

EEPROM

OSCILLATOR

INTERNAL

CALIBRATED

OSCILLATOR

USART

XTAL1

XTAL2

RESET

PORTB DIGITAL INTERFACE

PORTB DRIVERS/BUFFERS

PB0 - PB7

PORTD DIGITAL INTERFACE

PORTD DRIVERS/BUFFERS

PD0 - PD7

3

8155BS–AVR–07/09

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