ATmega1281 Atmel Corporation, ATmega1281 Datasheet - Page 104

• Manufacturer Part Number: ATmega1281
• Manufacturer: Atmel Corporation

Specifications of ATmega1281

• Flash (kbytes): 128 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: 3
• Twi (i2c): 1
• Uart: 2
• 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): 8
• Eeprom (bytes): 4096
• 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: 6
• Output Compare Channels: 16
• Input Capture Channels: 2
• Pwm Channels: 8
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

13.4.32
13.4.33
13.4.34
2549N–AVR–05/11
PORTL – Port L Data Register
DDRL – Port L Data Direction Register
PINL – Port L Input Pins Address
Bit
(0x10B)
Read/Write
Initial Value
Bit
(0x10A)
Read/Write
Initial Value
Bit
(0x109)
Read/Write
Initial Value
PORTL7
PINL5
DDL7
R/W
R/W
R/W
N/A
7
0
7
0
7
PORTL6
PINL5
DDL6
R/W
R/W
R/W
N/A
6
0
6
0
6
ATmega640/1280/1281/2560/2561
PORTL5
PINL5
DDL5
R/W
R/W
R/W
N/A
5
0
5
0
5
PORTL4
PINL4
DDL4
R/W
R/W
R/W
N/A
4
0
4
0
4
PORTL3
PINL3
DDL3
R/W
R/W
R/W
N/A
3
0
3
0
3
PORTL2
PINGL
DDL2
R/W
R/W
R/W
N/A
2
0
2
0
2
PORTL1
PINL1
DDL1
R/W
R/W
R/W
N/A
1
0
1
0
1
PORTL0
PINL0
DDL0
R/W
R/W
R/W
N/A
0
0
0
0
0
PORTL
DDRL
PINL
104