ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 608

• Manufacturer Part Number: ATMEGA645A-AU
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA645A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 54
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K 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-TQFP
• Processor Series: ATmega
• Core: AVR
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 3
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

29.9.11
608
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/645
Internal Oscillator Speed
Figure 29-531.ATmega6450A: Bandgap Voltage vs. Temperature
Figure 29-532.ATmega6450A: Watchdog Oscillator Frequency vs. V
1.108
1.106
1.104
1.102
1.098
1.096
1.094
1.092
1290
1260
1230
1200
1170
1140
1110
1080
1050
1.11
1.1
1.5
-45
-35
2
-25
-15
2.5
-5
3
5
Temperature (°C)
15
V
CC
3.5
(V)
25
35
3.3 V
4
45
4.5
55
CC
65
5
75
5.5
85
8285B–AVR–03/11
-45 °C
1.8 V
5.0 V
5.5 V
25 °C
85 °C