ATmega325P Atmel Corporation, ATmega325P Datasheet - Page 14

• Manufacturer Part Number: ATmega325P
• Manufacturer: Atmel Corporation

Specifications of ATmega325P

• Flash (kbytes): 32 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 54
• Ext Interrupts: 17
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Notes:
345
0x1E (0x3E)
0x1D (0x3D)
0x1C (0x3C)
0x1B (0x3B)
0x1A (0x3A)
0x0E (0x2E)
0x0D (0x2D)
0x0C (0x2C)
0x0B (0x2B)
0x0A (0x2A)
Address
0x26 (0x46)
0x25 (0x45)
0x24 (0x44)
0x23 (0x43)
0x22 (0x42)
0x21 (0x41)
0x20 (0x40)
0x1F (0x3F)
0x19 (0x39)
0x18 (0x38)
0x17 (0x37)
0x16 (0x36)
0x15 (0x35)
0x14 (0x34)
0x13 (0x33)
0x12 (0x32)
0x11 (0x31)
0x10 (0x30)
0x0F (0x2F)
0x09 (0x29)
0x08 (0x28)
0x07 (0x27)
0x06 (0x26)
0x05 (0x25)
0x04 (0x24)
0x03 (0x23)
0x02 (0x22)
0x01 (0x21)
0x00 (0x20)
1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
2. I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these
3. Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI
4. When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When addressing I/O
ATmega325P/3250P
should never be written.
registers, the value of single bits can be checked by using the SBIS and SBIC instructions.
instructions will only operate on the specified bit, and can therefore be used on registers containing such Status Flags. The
CBI and SBI instructions work with registers 0x00 to 0x1F only.
Registers as data space using LD and ST instructions, 0x20 must be added to these addresses. The ATmega325P/3250P is
a complex microcontroller with more peripheral units than can be supported within the 64 location reserved in Opcode for
the IN and OUT instructions. For the Extended I/O space from 0x60 - 0xFF in SRAM, only the ST/STS/STD and
LD/LDS/LDD instructions can be used.
TCNT0
Reserved
TCCR0A
GTCCR
EEARH
EEARL
EEDR
EECR
GPIOR0
EIMSK
EIFR
Reserved
Reserved
Reserved
Reserved
TIFR2
TIFR1
TIFR0
PORTG
DDRG
PING
PORTF
DDRF
PINF
PORTE
DDRE
PINE
PORTD
DDRD
PIND
PORTC
DDRC
PINC
PORTB
DDRB
PINB
PORTA
DDRA
PINA
Name
PORTF7
PORTE7
PORTD7
PORTC7
PORTB7
PORTA7
FOC0A
Bit 7
PCIE3
PINE7
PIND7
PINC7
PINB7
PINA7
PCIF3
PINF7
DDE7
DDD7
DDC7
DDB7
DDF7
DDA7
TSM
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTF6
PORTE6
PORTD6
PORTC6
PORTB6
WGM00
PORTA6
Bit 6
PCIE2
PINE6
PIND6
PINC6
PINB6
PINA6
PCIF2
PINF6
DDE6
DDD6
DDC6
DDB6
DDF6
DDA6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COM0A1
PORTF5
PORTE5
PORTD5
PORTC5
PORTB5
PORTA5
Bit 5
PCIE1
PING5
PINE5
PIND5
PINC5
PINB5
PINA5
PCIF1
PINF5
DDD5
DDC5
DDF5
DDE5
DDB5
DDA5
ICF1
-
-
-
-
-
-
-
-
-
-
-
-
EEPROM Address Register Low
General Purpose I/O Register
COM0A0
PORTG4
PORTF4
PORTE4
PORTD4
PORTC4
PORTB4
PORTA4
PING4
PIND4
PINC4
Bit 4
PCIE0
PCIF0
DDG4
PINF4
PINE4
DDD4
DDC4
PINB4
PINA4
EEPROM Data Register
DDF4
DDE4
DDB4
DDA4
-
-
-
-
-
-
-
-
-
-
-
Timer/Counter0
PORTG3
PORTF3
PORTE3
PORTD3
PORTC3
PORTB3
PORTA3
WGM01
EERIE
PING3
PIND3
PINC3
Bit 3
DDG3
PINF3
PINE3
DDD3
DDC3
PINB3
PINA3
DDF3
DDE3
DDB3
DDA3
-
-
-
-
-
-
-
-
-
-
-
-
PORTG2
PORTE2
PORTD2
PORTC2
PORTB2
EEMWE
PORTF2
PORTA2
OCF1B
PING2
PIND2
PINC2
Bit 2
DDG2
PINF2
PINE2
PINB2
PINA2
DDF2
DDE2
DDD2
DDC2
DDB2
DDA2
CS02
-
-
-
-
-
-
-
-
-
-
EEPROM Address Register High
PORTG1
PORTE1
PORTD1
PORTC1
PORTB1
PORTF1
PORTA1
OCF2A
OCF1A
OCF0A
PING1
PIND1
PINC1
Bit 1
EEWE
DDG1
PINF1
PINE1
PINB1
PINA1
PSR2
DDF1
DDE1
DDD1
DDC1
DDB1
DDA1
CS01
-
-
-
-
-
-
-
PORTG0
PORTE0
PORTD0
PORTC0
PORTB0
PORTF0
PORTA0
PSR10
PING0
PIND0
PINC0
Bit 0
INTF0
DDG0
PINF0
PINE0
PINB0
PINA0
EERE
DDF0
DDE0
DDD0
DDC0
DDB0
DDA0
CS00
TOV2
TOV1
TOV0
INT0
-
-
-
-
-
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