ATMEGA649V-8AI Atmel, ATMEGA649V-8AI Datasheet - Page 238

• Manufacturer Part Number: ATMEGA649V-8AI
• Description: IC AVR MCU FLASH 64K 1.8V 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649V-8AI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• 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, 64-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

238
ATmega329/3290/649/6490
Note:
Assembly Code Example
C Code Example
LCD_disable:
Wait_1:
Wait_2:
Void LCD_disable(void);
{
while ( !(LCDCRA & (1<<LCDIF)) )
while ( !(LCDCRA & (1<<LCDIF)) )
}
; Wait until a new frame is started.
lds
sbrs r16, LCDIF
rjmp Wait_1
; Set LCD Blanking and clear interrupt flag
; by writing a logical one to the flag.
ldi
sts
; Wait until LCD Blanking is effective.
lds
sbrs r16, LCDIF
rjmp Wait_2
; Disable LCD.
ldi
sts
ret
/* Wait until a new frame is started. */
;
/* Set LCD Blanking and clear interrupt flag */
/* by writing a logical one to the flag. */
LCDCRA = (1<<LCDEN)|(1<<LCDIF)|(1<<LCDBL);
/* Wait until LCD Blanking is effective. */
;
/* Disable LCD */
LCDCRA = (0<<LCDEN);
1.
See “About Code Examples” on page 9.
r16, LCDCRA
r16, (1<<LCDEN)|(1<<LCDIF)|(1<<LCDBL)
LCDCRA, r16
r16, LCDCRA
r16, (0<<LCDEN)
LCDCRA, r16
(1)
(1)
2552K–AVR–04/11