ATmega3290A Atmel Corporation, ATmega3290A Datasheet - Page 27

• Manufacturer Part Number: ATmega3290A
• Manufacturer: Atmel Corporation

Specifications of ATmega3290A

• Flash (kbytes): 32 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 160
• 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): 2
• Eeprom (bytes): 1024
• 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

8.6
8.6.1
8.6.2
8284D–AVR–6/11
Register Description
EEARH and EEARL – EEPROM Address Register ATmega169A/169PA
EEARH and EEARL – EEPROM Address Register
ATmega329A/329PA/3290A/3290PA/649A/649P/6490A/6490P
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
• Bits 15:9 – Reserved
These bits are reserved and will always be read as zero.
• Bits 8:0 – EEAR8:0: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
512 bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and
511. The initial value of EEAR is undefined. A proper value must be written before the EEPROM
may be accessed.
• Bits 15:11 – Reserved
These bits are reserved bits in the
ATmega329A/329PA/3290A/3290PA/649A/649P/6490A/6490P and will always read as zero.
• Bits 10:0 – EEAR10:0: EEPROM Address
The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the
1/2K bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and
1023/2047. The initial value of EEAR is undefined. A proper value must be written before the
EEPROM may be accessed.
Note:
Bit
0x22 (0x42)
0x21 (0x41)
Read/Write
Initial Value
Bit
0x22 (0x42)
0x21 (0x41)
Read/Write
Initial Value
1. EEAR10 is only valid for ATmega649A/649P/6490A/6490P.
EEAR7
EEAR7
R/W
R/W
15
R
0
X
–
7
15
R
X
–
7
0
EEAR6
EEAR6
R/W
14
R
X
R/W
–
6
0
14
R
X
–
6
0
EEAR5
R/W
EEAR5
13
R
X
–
5
0
R/W
13
R
X
–
5
0
EEAR4
R/W
12
R
–
4
0
X
EEAR4
R/W
12
R
X
–
4
0
EEAR3
R/W
11
R
X
–
3
0
EEAR3
R/W
11
R
–
3
0
X
EEAR10
EEAR2
R/W
R/W
10
X
X
2
EEAR2
R/W
(1)
10
R
X
–
2
0
EEAR9
EEAR1
R/W
R/W
9
1
X
X
EEAR1
R/W
R
X
9
–
1
0
EEAR8
EEAR0
R/W
R/W
EEAR8
EEAR0
8
0
X
X
R/W
R/W
X
X
8
0
EEARH
EEARL
EEARH
EEARL
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