ATmega3250A Atmel Corporation, ATmega3250A Datasheet - Page 420

• Manufacturer Part Number: ATmega3250A
• Manufacturer: Atmel Corporation

Specifications of ATmega3250A

• Flash (kbytes): 32 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 25
• 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

29.3.11
8285D–AVR–06/11
Internal Oscillator Speed
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P
Figure 29-169.ATmega325A: Watchdog Oscillator Frequency vs. V
Figure 29-170.ATmega325A: Watchdog Oscillator Frequency vs. Temperature
1225
1200
1175
1150
1125
1100
1075
1050
1025
1000
1250
1200
1150
1100
1050
1000
1.5
-40
-30
2
-20
-10
2.5
0
3
10
Temperature [°C]
V
20
CC
3.5
[V]
30
4
40
50
4.5
60
CC
70
5
80
5.5
-40°C
5.5 V
5.0 V
4.5 V
4.0 V
3.0 V
2.7 V
1.8 V
25°C
85°C
420