Atmel Xplained Evaluation Kit ATMEGA1284P-XPLD ATMEGA1284P-XPLD 데이터 시트

8272ES–AVR–04/2013

The Atmel ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P is a low-power CMOS
8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful
i n s t r u c t i o n s   i n   a   s i n g l e   c l o c k   c y c l e ,   t h e
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P achieves throughputs approach-
ing 1 MIPS per MHz allowing the system designer to optimize power consumption versus
processing speed.

Block diagram.

The AVR core combines a rich instruction set with 32 general purpose working registers. All the
32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent
registers to be accessed in one single instruction executed in one clock cycle. The resulting
architecture is more code efficient while achieving throughputs up to ten times faster than
conventional CISC microcontrollers.

  CPU

GND

VCC

RESET

Power

Supervision

POR / BOD &

RESET

Watchdog

Oscillator

Watchdog

Timer

Oscillator

Circuits /

Clock

Generation

XTAL1

XTAL2

PORT A (8)

PORT D (8)

PD7..0

PORT C (8)

PC5..0

TWI

SPI

EEPROM

JTAG/OCD

16bit T/C 1

8bit T/C 2

8bit T/C 0

SRAM

FLASH

USART 0

Internal 

Bandgap reference

Analog 

Comparator

A/D

Converter

PA7..0

PORT B (8)

PB7..0

USART 1

TOSC1/PC6

TOSC2/PC7

16bit T/C 1

16bit T/C 3*

* Only available in ATmega1284/1284P