ATMEGA649A-AU Atmel, ATMEGA649A-AU Datasheet - Page 359

• 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

Table 28-19. ADC Characteristics
Notes:
28.10 LCD Controller Characteristics
Table 28-20. LCD Controller Characteristics
8284A–AVR–10/10
I
R
R
Symbol
LCD
Symbol
SEG
COM
R
R
V
REF
AIN
INT
1. Voltage difference between channels
Parameter
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
Parameter
LCD Driver Current
Segment Driver Output Impedance
Blackplane Driver Output Impedance
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Condition
Total for All COM and SEG pins
Condition
Min.
1.0
Typ
100
1.1
32
Min.
Typ
10
6
2
Max
1.2
Max
Units
MΩ
kΩ
Units
V
µA
kΩ
kΩ
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