ATmega325 Atmel Corporation, ATmega325 Datasheet - Page 304

• 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

28.7
Table 28-7.
2570N–AVR–05/11
Symbol
AVCC
V
V
REF
IN
ADC
Parameter
Resolution
Absolute accuracy (Including
INL, DNL, quantization error,
gain and offset error)
Integral Non-Linearity (INL)
Differential Non-Linearity (DNL)
Gain Error
Offset Error
Conversion Time
Clock Frequency
Analog Supply Voltage
Reference Voltage
Pin Input Voltage
Input Range
Input Bandwidth
ADC Characteristics
Single Ended Conversion
Differential Conversion
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 1MHz
Single Ended Conversion
V
ADC clock = 200kHz
Noise Reduction Mode
Single Ended Conversion
V
ADC clock = 1 MHz
Noise Reduction Mode
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Single Ended Conversion
V
ADC clock = 200kHz
Free Running Conversion
Single Ended Conversion
Single Ended Conversion
Differential Conversion
Single Ended Channels
Differential Channels
Single Ended Channels
Differential Channels
Single Ended Channels
Differential Channels
REF
REF
REF
REF
REF
REF
REF
REF
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
= 4V, V
Condition
CC
CC
CC
CC
CC
CC
CC
CC
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
= 4V,
(1)
ATmega325/3250/645/6450
-0.85V
V
CC
GND
GND
GND
Min
1.0
1.0
13
50
- 0.3
REF
0.25
38,5
Typ
4.5
4.5
0.5
10
8
2
2
2
2
4
AVCC - 0.5
V
CC
AVCC
AVCC
1000
Max
V
V
V
260
2.5
REF
REF
REF
+ 0.3
Units
LSB
LSB
LSB
LSB
LSB
LSB
LSB
LSB
kHz
kHz
kHz
Bits
Bits
µs
V
V
V
V
V
V
V
304