ATMEGA644P-20AUR Atmel, ATMEGA644P-20AUR Datasheet - Page 22

• Manufacturer Part Number: ATMEGA644P-20AUR
• Description: MCU AVR 64K FLASH 20MHZ 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-20AUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• 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): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8. Errata
8.1
8.1.1
8.2
8.2.1
8.3
8.3.1
8.3.2
22
ATmega164P
ATmega324P
ATmega644P
ATmega164P/324P/644P
Rev. A
Rev. A
Rev. A
Rev. B
No known Errata.
No known Errata.
Not sampled.
No known Errata.
8011OS–AVR–07/10