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ATMEGA8515 Datasheet(PDF) 3 Page - ATMEL Corporation

Part No. ATMEGA8515
Description  8-bit AVR Microcontroller with 8K Bytes In-System Programmable Flash
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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 3 page
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3
ATmega8515(L)
2512G–AVR–03/05
Overview
The ATmega8515 is a low-power CMOS 8-bit microcontroller based on the AVR
enhanced RISC architecture. By executing powerful instructions in a single clock cycle,
the ATmega8515 achieves throughputs approaching 1 MIPS per MHz allowing the sys-
tem designer to optimize power consumption versus processing speed.
Block Diagram
Figure 2. Block Diagram
INTERNAL
OSCILLATOR
WATCHDOG
TIMER
MCU CTRL.
& TIMING
OSCILLATOR
TIMERS/
COUNTERS
INTERRUPT
UNIT
STACK
POINTER
EEPROM
SRAM
STATUS
REGISTER
USART
PROGRAM
COUNTER
PROGRAM
FLASH
INSTRUCTION
REGISTER
INSTRUCTION
DECODER
PROGRAMMING
LOGIC
SPI
COMP.
INTERFACE
PORTA DRIVERS/BUFFERS
PORTA DIGITAL INTERFACE
GENERAL
PURPOSE
REGISTERS
X
Y
Z
ALU
+
-
PORTC DRIVERS/BUFFERS
PORTC DIGITAL INTERFACE
PORTB DIGITAL INTERFACE
PORTB DRIVERS/BUFFERS
PORTD DIGITAL INTERFACE
PORTD DRIVERS/BUFFERS
XTAL1
XTAL2
RESET
CONTROL
LINES
VCC
GND
PA0 - PA7
PC0 - PC7
PD0 - PD7
PB0 - PB7
AVR CPU
INTERNAL
CALIBRATED
OSCILLATOR
PORTE
DRIVERS/
BUFFERS
PORTE
DIGITAL
INTERFACE
PE0 - PE2




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