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Part Name
Description
ATMEGA161-8AI(2007) View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
ATMEGA161-8AI
(Rev.:2007)
8-bit Microcontroller with 16K Bytes of In-System Programmable Flash
Atmel Corporation
ATMEGA161-8AI Datasheet PDF : 159 Pages
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Block Diagram
Figure 1.
The ATmega161 Block Diagram
PA0-PA7
VCC
PC0-PC7
GND
PORTA DRIVERS
DATA REGISTER
PORTA
DATA DIR.
REG. PORTA
PORTC DRIVERS
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
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ATmega161(L)
1228D–AVR–02/07
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