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ATMEGA8L 데이터 시트보기 (PDF) - Atmel Corporation
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ATMEGA8L
8-bit Atmel with 8KBytes In-System Programmable Flash
Atmel Corporation
ATMEGA8L Datasheet PDF : 331 Pages
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ATmega8(L)
Overview
Block Diagram
The Atmel
®
AVR
®
ATmega8 is a low-power CMOS 8-bit microcontroller based on the AVR RISC
architecture. By executing powerful instructions in a single clock cycle, the ATmega8 achieves
throughputs approaching 1MIPS per MHz, allowing the system designer to optimize power con-
sumption versus processing speed.
Figure 1.
Block Diagram
RESET
VCC
PC0 - PC6
PB0 - PB7
XTAL1
XTAL2
PORTC DRIVERS/BUFFERS
PORTB DRIVERS/BUFFERS
GND
PORTC DIGITAL INTERFACE
PORTB DIGITAL INTERFACE
AGND
AREF
MUX &
ADC
ADC
INTERFACE
PROGRAM
COUNTER
STACK
POINTER
PROGRAM
FLASH
SRAM
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
CONTROL
LINES
AVR CPU
GENERAL
PURPOSE
REGISTERS
X
Y
Z
ALU
STATUS
REGISTER
PROGRAMMING
LOGIC
SPI
+
COMP.
-
INTERFACE
TWI
TIMERS/
COUNTERS
OSCILLATOR
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
MCU CTRL.
& TIMING
INTERRUPT
UNIT
OSCILLATOR
EEPROM
USART
2486AA–AVR–02/2013
PORTD DIGITAL INTERFACE
PORTD DRIVERS/BUFFERS
PD0 - PD7
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