ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 90

• Manufacturer Part Number: ATMEGA649A-AU
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649A-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, 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

13.3.9
8284A–AVR–10/10
Alternate Functions of Port J
Port J is only present in ATmega3290A/3290PA/6490A/6490P. The alternate pin configuration is
as follows:
Table 13-27. Port J Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT30/SEG – Port J, Bit 6
PCINT30, Pin Change Interrupt Source 30: The PE30 pin can serve as an external interrupt
source.
SEG, LCD front plane 27.
• PCINT29/SEG – Port J, Bit 5
PCINT29, Pin Change Interrupt Source 29: The PE29 pin can serve as an external interrupt
source.
SEG, LCD front plane28.
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Port Pin
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1
PJ0
Alternate Function
PCINT30/SEG (Pin Change Interrupt30 or LCD Front Plane 27)
PCINT29/SEG (Pin Change Interrupt29 or LCD Front Plane 28)
PCINT28/SEG (Pin Change Interrupt28 or LCD Front Plane 29)
PCINT27/SEG (Pin Change Interrupt27 or LCD Front Plane 30)
PCINT26/SEG(Pin Change Interrupt26 or LCD Front Plane 31)
PCINT25/SEG(Pin Change Interrupt25 or LCD Front Plane 34)
PCINT24/SEG (Pin Change Interrupt26 or LCD Front Plane 35)
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