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ATMEGA103L Datasheet(PDF) 4 Page - ATMEL Corporation

Part # ATMEGA103L
Description  8-bit Microcontroller with 128K Bytes In-System Programmable Flash
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATMEGA103L Datasheet(HTML) 4 Page - ATMEL Corporation

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4
ATmega103(L)
0945I–AVR–02/07
Block Diagram
Figure 1. The ATmega103(L) Block Diagram
PROGRAM
COUNTER
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
STACK
POINTER
PROGRAM
FLASH
MCU CONTROL
REGISTER
SRAM
GENERAL
PURPOSE
REGISTERS
INSTRUCTION
REGISTER
TIMER/
COUNTERS
INSTRUCTION
DECODER
DATA DIR.
REG. PORTB
DATA DIR.
REG. PORTE
DATA DIR.
REG. PORTA
DATA DIR.
REG. PORTD
DATA REGISTER
PORTB
DATA REGISTER
PORTE
DATA REGISTER
PORTA
DATA REGISTER
PORTC
DATA REGISTER
PORTD
PROGRAMMING
LOGIC
TIMING AND
CONTROL
OSCILLATOR
OSCILLATOR
INTERRUPT
UNIT
EEPROM
SPI
UART
STATUS
REGISTER
Z
Y
X
ALU
PORTB DRIVER/BUFFERS
PORTE DRIVER/BUFFERS
PORTA DRIVER/BUFFERS
PORTF BUFFERS
ANALOG MUX
ADC
PORTD DRIVER/BUFFERS
PORTC DRIVERS
PB0 - PB7
PE0 - PE7
PA0 - PA7
PF0 - PF7
RESET
VCC
VCC
AGND
GND
GND
AREF
TOSC2
TOSC1
XTAL1
XTAL1
CONTROL
LINES
PD0 - PD7
PC0 - PC7
PEN
ALE
WR
RD
8-BIT DATA BUS
AVCC


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