ATMEGA323-8AC Atmel, ATMEGA323-8AC Datasheet - Page 13

• Manufacturer Part Number: ATMEGA323-8AC
• Description: IC AVR MCU 32K 8MHZ COM 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

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

The Program and Data
Addressing Modes
Register Direct, Single
Register Rd
1457G–AVR–09/03
Figure 9. SRAM Organization
The ATmega323 AVR Enhanced RISC microcontroller supports powerful and efficient
addressing modes for access to the Program memory (Flash) and Data memory
(SRAM, Register File, and I/O Memory). This section describes the different addressing
modes supported by the AVR architecture. In the figures, OP means the operation code
part of the instruction word. To simplify, not all figures show the exact location of the
addressing bits.
Figure 10. Direct Single Register Addressing
The operand is contained in register d (Rd).
I/O Registers
Register File
R29
R30
$3D
R31
$00
$01
$02
$3E
$3F
R0
R1
R2
...
...
ATmega323(L)
Data Address Space
Internal SRAM
$001D
$005D
$0000
$0001
$001E
$001F
$0020
$0021
$0022
$005E
$005F
$0060
$0061
$085E
$085F
$0002
...
...
...
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