ATmega325 Atmel Corporation, ATmega325 Datasheet - Page 77

• Manufacturer Part Number: ATmega325
• Manufacturer: Atmel Corporation

Specifications of ATmega325

• Flash (kbytes): 32 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 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: No
• 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

14.3.6
2570N–AVR–05/11
Alternate Functions of Port H
Table 14-15. Overriding Signals for Alternate Functions in PG4 and PG3
Port H is only present in ATmega3250/6450. The alternate pin configuration is as follows:
Table 14-16. Port H Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT23 – Port H, Bit 7
PCINT23, Pin Change Interrupt Source 23: The PH7 pin can serve as an external interrupt
source.
• PCINT22 – Port H, Bit 6
PCINT22, Pin Change Interrupt Source 22: The PH6 pin can serve as an external interrupt
source.
• PCINT21 – Port H, Bit 5
PCINT21, Pin Change Interrupt Source 21: The PH5 pin can serve as an external interrupt
source.
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
Alternate Function
PCINT23 (Pin Change Interrupt23)
PCINT22 (Pin Change Interrupt22)
PCINT21 (Pin Change Interrupt21)
PCINT20 (Pin Change Interrupt20)
PCINT19 (Pin Change Interrupt19)
PCINT18 (Pin Change Interrupt18)
PCINT17 (Pin Change Interrupt17)
PCINT16 (Pin Change Interrupt16)
PG4/T0
0
0
0
0
0
0
–
0
0
T0 INPUT
-
ATmega325/3250/645/6450
PG3/T1
0
0
0
0
0
–
0
0
-
0
T1 INPUT
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