ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 85

• 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

13.3.7
8284A–AVR–10/10
Alternate Functions of Port G
Table 13-20. Overriding Signals for Alternate Functions in PF3:PF0
The alternate pin configuration is as follows:
Table 13-21. Port G Pins Alternate Functions (SEG refers to 100-pin/64-pin pinout)
Note:
The alternate pin configuration is as follows:
• RESET – Port G, Bit 5
RESET: External Reset input. When the RSTDISBL Fuse is programmed (‘0’), PG5 will function
as input with pull-up always on.
• T0/SEG – Port G, Bit 4
T0, Timer/Counter0 Counter Source.
SEG, LCD front plane 32/23.
• T1/SEG24 – Port G, Bit 3
T1, Timer/Counter1 Counter Source.
SEG, LCD front plane 33/24.
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Port Pin
PG5
PG4
PG3
PG2
PG1
PG0
1. Port G, PG5 is input only. Pull-up is always on.
See
Table 27-3 on page 312
PF3/ADC3
0
0
ADC3 INPUT
0
0
0
0
0
0
–
–
Alternate Function
RESET
T0/SEG (Timer/Counter0 Clock Input or LCD Front Plane 32/23)
T1/SEG (Timer/Counter1 Clock Input or LCD Front Plane 33/24)
SEG (LCD Front Plane 4/4)
SEG (LCD Front Plane 17/13)
SEG (LCD Front Plane 18/14)
(1)
PF2/ADC2
0
0
0
0
0
0
–
0
0
–
ADC2 INPUT
for RSTDISBL fuse.
PF1/ADC1
0
0
0
0
0
0
–
0
0
–
ADC1 INPUT
PF0/ADC0
0
0
0
0
0
0
–
0
0
–
ADC0 INPUT
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