ATMEGA325A-MU Atmel, ATMEGA325A-MU Datasheet - Page 389

• Manufacturer Part Number: ATMEGA325A-MU
• Description: IC MCU AVR 32K FLASH 64VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA325A-MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

29.2.11
8285B–AVR–03/11
Internal Oscillator Speed
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Figure 29-109.ATmega165A: Watchdog Oscillator Frequency vs. V
Figure 29-110.ATmega165PA: Watchdog Oscillator Frequency vs. Temperature
1300
1250
1200
1150
1100
1050
1000
1300
1250
1200
1150
1100
1050
1000
1.5
-50
-40
2
-30
-20
2.5
-10
0
3
Temperature (°C)
10
V
CC
3.5
20
(V)
30
4
40
50
4.5
60
CC
70
5
80
5.5
90
-45 °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
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