ATMEGA649P-MUR Atmel, ATMEGA649P-MUR Datasheet - Page 243

• Manufacturer Part Number: ATMEGA649P-MUR
• Description: AVR, 64KB FLASH, 2KB EE, 4KB SRA
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA649P-MUR

• 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-VFQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

23.3.7
23.3.8
8284A–AVR–10/10
Display Blanking
Port Mask
(TOSC1) pin instead of a 32 kHz crystal. See
page 158
Before entering Power-down mode, Standby mode or ADC Noise Reduction mode with synchro-
nous LCD clock selected, the user have to disable the LCD. Refer to
page
When LCDBL is written to one, the LCD is blanked after completing the current frame. All seg-
ments and common pins are connected to GND, discharging the LCD. Display memory is
preserved. Display blanking should be used before disabling the LCD to avoid DC voltage
across segments, and a slowly fading image.
For LCD with less than 25/40 segment terminals, it is possible to mask some of the unused pins
and use them as ordinary port pins instead. Refer to
common pins are automatically configured as port pins.
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
246.
for further details.
”Asynchronous Operation of Timer/Counter2” on
Table 23-3 on page 249
”Disabling the LCD” on
for details. Unused
243