ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 3
![IC AVR MCU 32K 8MHZ COM 44TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA323-8AC
Manufacturer Part Number
ATMEGA323-8AC
Description
IC AVR MCU 32K 8MHZ COM 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA323L-4PC.pdf
(247 pages)
Specifications of ATMEGA323-8AC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA3238AC
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Overview
Block Diagram
1457G–AVR–09/03
The ATmega323 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 ATmega323 achieves throughputs approaching 1 MIPS per MHz allowing the sys-
tem designer to optimize power consumption versus processing speed.
Figure 1. Block Diagram
AGND
AVCC
AREF
GND
VCC
PROGRAMMING
INSTRUCTION
REFERENCE
INSTRUCTION
INTERNAL
PROGRAM
PROGRAM
REGISTER
COUNTER
CONTROL
DECODER
FLASH
LOGIC
LINES
DATA REGISTER
DATA REGISTER
ANALOG MUX
PORTB
PORTA
PORTA DRIVERS
PORTB DRIVERS
PA0 - PA7
PB0 - PB7
REGISTERS
REGISTER
PURPOSE
GENERAL
POINTER
STATUS
STACK
SRAM
ALU
SPI
X
Y
Z
REG. PORTB
REG. PORTA
DATA DIR.
DATA DIR.
ADC
8-BIT DATA BUS
DATA REGISTER
DATA REGISTER
MCU CONTROL
2-WIRE SERIAL
OSCILLATOR
CALIBRATED
OSCILLATOR
WATCHDOG
COUNTERS
INTERRUPT
INTERFACE
REGISTER
INTERNAL
INTERNAL
EEPROM
PORTC
TIMER/
PORTD
TIMER
USART
UNIT
PORTC DRIVERS
PORTD DRIVERS
PC0 - PC7
PD0 - PD7
ATmega323(L)
REG. PORTC
REG. PORTD
DATA DIR.
DATA DIR.
OSCILLATOR
OSCILLATOR
TIMING AND
INTERFACE
CONTROL
JTAG
XTAL1
XTAL2
RESET
3
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