ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 87

• 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

13.3.8
8284A–AVR–10/10
Alternate Functions of Port H
Table 13-23. Overriding Signals for Alternate Functions in PG3:0
1.
2.
Port H is only present in ATmega3290A/3290PA/6490A/6490P. The alternate pin configuration
is as follows:
Table 13-24. Port H Pins Alternate Functions
The alternate pin configuration is as follows:
• PCINT23/SEG – Port H, Bit 7
PCINT23, Pin Change Interrupt Source 23: The PH7 pin can serve as an external interrupt
source.
SEG, LCD front plane 36.
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
AIO
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Port Pin
(1)
(2)
PH7
PH6
PH5
PH4
PH3
PH2
PH1
PH0
Applies to ATmega169A/169PA
Applies to ATmega329A/329PA/3290A/3290PA/649A/649P/6490A/6490P
PG3/T1/
SEG(33/24)
LCDEN
0
LCDEN
0
0
0
–
LCDEN • (LCDPM)
0
T1 INPUT
SEG24
LCDSEG
Alternate Function
PCINT23/SEG (Pin Change Interrupt23 or LCD Front Plane 36)
PCINT22/SEG (Pin Change Interrupt22 or LCD Front Plane 37)
PCINT21/SEG (Pin Change Interrupt21 or LCD Front Plane 38)
PCINT20/SEG (Pin Change Interrupt20 or LCD Front Plane 39)
PCINT19/SEG (Pin Change Interrupt19 or LCD Front Plane 7)
PCINT18/SEG (Pin Change Interrupt18 or LCD Front Plane 8)
PCINT17/SEG (Pin Change Interrupt17 or LCD Front Plane 9)
PCINT16/SEG (Pin Change Interrupt16 or LCD Front Plane 10)
PG2/SEG(4/4)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
SEG4
LCDSEG
PG1/SEG(17/13)
LCDEN
0
LCDEN
0
0
0
–
LCDEN • (LCDPM)
0
–
SEG13
LCDSEG
PG0/SEG(1814)
LCDEN
0
LCDEN
0
0
0
–
LCDEN • (LCDPM)
0
–
SEG14
LCDSEG
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