ATMEGA16A データシートの表示（PDF） - Atmel Corporation

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ATMEGA16A

8-bit AVR® Microcontroller with 16K Bytes In-System Programmable Flash

Atmel Corporation 

2.1 Block Diagram

Figure 2-1.

VCC

Block Diagram

PA0 - PA7

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

PORTB DIGITAL INTERFACE

PORTB DRIVERS/BUFFERS

PB0 - PB7

ATmega16A

PC0 - PC7

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

PORTD DIGITAL INTERFACE

PORTD DRIVERS/BUFFERS

PD0 - PD7

4

8154BS–AVR–07/09

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