ATMEGA324PA-MUR Atmel, ATMEGA324PA-MUR Datasheet - Page 461

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

Specifications of ATMEGA324PA-MUR

• 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

Table of Contents
8152G–AVR–11/09
1
2
3
4
5
6
7
8
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 5
Resources ................................................................................................. 9
About Code Examples ............................................................................. 9
Data Retention .......................................................................................... 9
AVR CPU Core ........................................................................................ 10
AVR Memories ........................................................................................ 19
System Clock and Clock Options ......................................................... 30
1.1Pinout - PDIP/TQFP/VQFN/QFN/MLF for ATmega164PA/324PA/644PA/1284P .....2
1.2Pinout - DRQFN for ATmega164PA/324PA/644PA ..................................................3
1.3Pinout - VFBGA for ATmega164PA/324PA/644PA ...................................................4
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between ATmega164PA, ATmega324PA, ATmega644PA and
2.3Pin Descriptions ........................................................................................................7
6.1Overview .................................................................................................................10
6.2ALU – Arithmetic Logic Unit ....................................................................................11
6.3Status Register ........................................................................................................11
6.4General Purpose Register File ................................................................................13
6.5Stack Pointer ...........................................................................................................14
6.6Instruction Execution Timing ...................................................................................15
6.7Reset and Interrupt Handling ..................................................................................16
7.1Overview .................................................................................................................19
7.2In-System Reprogrammable Flash Program Memory .............................................19
7.3SRAM Data Memory ...............................................................................................20
7.4EEPROM Data Memory ..........................................................................................22
7.5I/O Memory ..............................................................................................................23
7.6Register Description ................................................................................................24
8.1Clock Systems and their Distribution .......................................................................30
8.2Clock Sources .........................................................................................................31
8.3Low Power Crystal Oscillator ...................................................................................33
ATmega1284P 6
ATmega164PA/324PA/644PA/1284P
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