ATMEGA324PA-AUR Atmel, ATMEGA324PA-AUR Datasheet - Page 19

• Manufacturer Part Number: ATMEGA324PA-AUR
• Description: MCU AVR 32KB FLASH 20 MHZ 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA324PA-AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• 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): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. AVR Memories
7.1
7.2
8152G–AVR–11/09
Overview
In-System Reprogrammable Flash Program Memory
This section describes the different memories in the ATmega164PA/324PA/644PA/1284P. The
AVR architecture has two main memory spaces, the Data Memory and the Program Memory
space. In addition, the ATmega164PA/324PA/644PA/1284P features an EEPROM Memory for
data storage. All three memory spaces are linear and regular.
The ATmega164PA/324PA/644PA/1284P contains 16/32/64/128K bytes On-chip In-System
Reprogrammable Flash memory for program storage. Since all AVR instructions are 16 or 32
bits wide, the Flash is organized as 32/64 x 16. For software security, the Flash Program mem-
ory space is divided into two sections, Boot Program section and Application Program section.
The Flash memory has an endurance of at least 10,000 write/erase cycles. The
ATmega164PA/324PA/644PA/1284P Program Counter (PC) is 15/16 bits wide, thus addressing
the 32/64K program memory locations. The operation of Boot Program section and associated
Boot Lock bits for software protection are described in detail in
296.
downloading using the SPI pins or the JTAG interface.
Constant tables can be allocated within the entire program memory address space (see the LPM
– Load Program Memory instruction description.
Timing diagrams for instruction fetch and execution are presented in
ing” on page
”Memory Programming” on page 296
15.
ATmega164PA/324PA/644PA/1284P
contains a detailed description on Flash data serial
”Memory Programming” on page
”Instruction Execution Tim-
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