ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 79

• 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

13.3.4
8284A–AVR–10/10
Alternate Functions of Port D
Table 13-11. Overriding Signals for Alternate Functions in PC3:PC0
The Port D pins with alternate functions are shown in
Table 13-12. Port D Pins Alternate Functions (SEG refers to 100-pin/64-pin pinout)
The alternate pin configuration is as follows:
• SEG – Port D, Bit 7:2
SEG, LCD front plane 19/15-24/20.
• INT0/SEG – Port D, Bit 1
INT0, External Interrupt Source 0. The PD1 pin can serve as an external interrupt source to the
MCU.
SEG, LCD front plane 25/21.
• ICP1/SEG – Port D, Bit 0
ICP1 – Input Capture pin1: The PD0 pin can act as an Input Capture pin for Timer/Counter1.
SEG, LCD front plane 26/22
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
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
PC3/SEG(13/9)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
Alternate Function
SEG (LCD front plane 19/15)
SEG (LCD front plane 20/16)
SEG (LCD front plane 21/17)
SEG (LCD front plane 22/18)
SEG (LCD front plane 23/19)
SEG (LCD front plane 24/20)
INT0/SEG (External Interrupt0 Input or LCD front plane 25/21)
ICP1/SEG (Timer/Counter1 Input Capture pin or LCD front plane 26/22)
PC2/SEG(14/10)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
Table
PC1/SEG(15/11)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
13-12.
PC0/SEG(16/12)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
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