ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 78

• 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

13.3.3
8284A–AVR–10/10
Alternate Functions of Port C
The Port C has an alternate function as SEG for the LCD Controller.
Table 13-9.
The alternate pin configuration is as follows:
• SEG – Port D, Bit 7:0
SEG, LCD front plane 5/5, 6/6, 11/7-16/12.
Table 13-10
shown in
Table 13-10. Overriding Signals for Alternate Functions in PC7:PC4
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
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Figure 13-5 on page
and
Port C Pins Alternate Functions (SEG refers to 100-pin/64-pin pinout)
Alternate Function
SEG (LCD Front Plane 5/5)
SEG (LCD Front Plane 6/6)
SEG (LCD Front Plane 11/7)
SEG (LCD Front Plane 12/8)
SEG (LCD Front Plane 13/9)
SEG (LCD Front Plane14/10)
SEG (LCD Front Plane 15/11)
SEG (LCD Front Plane 16/12)
PC7/SEG5
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
Table 13-11
72.
relate the alternate functions of Port C to the overriding signals
PC6/SEG6
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
PC5/SEG(11/7)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
PC4/SEG(12/8)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
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