ATmega649 Atmel Corporation, ATmega649 Datasheet - Page 9
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATmega649
Manufacturer Part Number
ATmega649
Description
Manufacturer
Atmel Corporation
Specifications of ATmega649
Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega649-16AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega649-16MU
Manufacturer:
Atmel
Quantity:
135
Part Number:
ATmega6490-16AI
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega6490-16AU
Manufacturer:
Atmel
Quantity:
135
Company:
Part Number:
ATmega6490-16AUR
Manufacturer:
Atmel
Quantity:
1 500
Company:
Part Number:
ATmega6490A-AU
Manufacturer:
Atmel
Quantity:
1 250
Company:
Part Number:
ATmega6490A-AUR
Manufacturer:
Maxim
Quantity:
43
2.3.17
3. Resources
4. Data Retention
5. About Code Examples
2552K–AVR–04/11
LCDCAP
An external capacitor (typical > 470nF) must be connected to the LCDCAP pin as shown in
ure
ripple on V
A comprehensive set of development tools, application notes and datasheets are available for
download on http://www.atmel.com/avr.
Note:
Reliability Qualification results show that the projected data retention failure rate is much less
than 1 PPM over 20 years at 85°C or 100 years at 25°C.
This documentation contains simple code examples that briefly show how to use various parts of
the device. These code examples assume that the part specific header file is included before
compilation. Be aware that not all C compiler vendors include bit definitions in the header files
and interrupt handling in C is compiler dependent. Please confirm with the C compiler documen-
tation for more details.
For I/O Registers located in extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”
instructions must be replaced with instructions that allow access to extended I/O. Typically
“LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”.
23-2. This capacitor acts as a reservoir for LCD power (V
1.
LCD
but increases the time until V
LCD
ATmega329/3290/649/6490
reaches its target value.
LCD
). A large capacitance reduces
Fig-
9