ATMEGA161 查看數據表（PDF） - Atmel Corporation

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ATMEGA161

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

Atmel Corporation 

ATmega161(L)

Block Diagram

Figure 1. The ATmega161 Block Diagram

PA0-PA7

VCC

PC0-PC7

GND

PORTA DRIVERS

PORTC DRIVERS

DATA REGISTER

PORTA

DATA DIR.

REG. PORTA

DATA REGISTER

PORTC

8-BIT DATA BUS

DATA DIR.

REG. PORTC

PROGRAM

COUNTER

PROGRAM

FLASH

INSTRUCTION

REGISTER

INSTRUCTION

DECODER

CONTROL

LINES

PROGRAMMING

LOGIC

STACK

POINTER

SRAM

GENERAL

PURPOSE

REGISTERS

X

Y

Z

ALU

STATUS

REGISTER

SPI

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

MCU CONTROL

REGISTER

TIMER/

COUNTERS

INTERRUPT

UNIT

EEPROM

OSCILLATOR

TIMING AND

CONTROL

UARTS

XTAL1

XTAL2

RESET

DATA REGISTER DATA DIR.

PORTB

REG. PORTB

DATA REGISTER

PORTD

DATA DIR.

REG. PORTD

DATA REG. DATA DIR

PORTE REG. PORTE

PORTB DRIVERS

PORTD DRIVERS

PORTE DRIVERS

PB0 - PB7

PD0 - PD7

PE0 - PE2

3

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