ATmega324PA Atmel Corporation, ATmega324PA Datasheet - Page 576

• Manufacturer Part Number: ATmega324PA
• Manufacturer: Atmel Corporation

Specifications of ATmega324PA

• Flash (kbytes): 32 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Table of Contents
8272C–AVR–06/11
1
2
3
4
5
6
7
8
9
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 5
Resources ................................................................................................. 9
About Code Examples ............................................................................. 9
Data Retention .......................................................................................... 9
Capacitive touch sensing ........................................................................ 9
AVR CPU Core ........................................................................................ 10
AVR Memories ........................................................................................ 19
System Clock and Clock Options ......................................................... 30
1.1Pinout - PDIP/TQFP/VQFN/QFN/MLF for
1.2Pinout - DRQFN for ATmega164A/164PA/324A/324PA ...........................................3
1.3Pinout - VFBGA for ATmega164A/164PA/324A/324PA ............................................4
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between ATmega164A, ATmega164PA, ATmega324A, ATmega324PA,
2.3Pin Descriptions ........................................................................................................7
7.1Overview .................................................................................................................10
7.2ALU – Arithmetic Logic Unit ....................................................................................11
7.3Status Register ........................................................................................................11
7.4General Purpose Register File ................................................................................13
7.5Stack Pointer ...........................................................................................................14
7.6Instruction Execution Timing ...................................................................................15
7.7Reset and Interrupt Handling ..................................................................................16
8.1Overview .................................................................................................................19
8.2In-System Reprogrammable Flash Program Memory .............................................19
8.3SRAM Data Memory ...............................................................................................20
8.4EEPROM Data Memory ..........................................................................................22
8.5I/O Memory ..............................................................................................................23
8.6Register Description ................................................................................................24
9.1Clock Systems and their Distribution .......................................................................30
ATmega164A/PA/324A/PA/644A/PA/1284/P
ATmega164A/164PA/324A/324PA/644A/644PA/1284/1284P 2
ATmega644A, ATmega644PA, ATmega1284 and ATmega1284P 7
i