ATmega1281 Atmel Corporation, ATmega1281 Datasheet - Page 96

• 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

13.3.10
2549N–AVR–05/11
Alternate Functions of Port K
Table 13-28. Overriding Signals for Alternate Functions in PJ7:PJ4
Table 13-29. Overriding Signals for Alternate Functions in PJ3:PJ0
The Port K alternate pin configuration is as follows:
Table 13-30. Port K Pins Alternate Functions
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
Port Pin
PK7
PK6
PK5
PJ7
0
0
0
0
0
0
-
0
0
0
-
PJ3/PCINT12
0
0
0
0
0
0
-
PCINT12·PCIE1
1
PCINT12 INPUT
-
ADC15/PCINT23 (ADC Input Channel 15 or Pin Change Interrupt 23)
ADC14/PCINT22 (ADC Input Channel 14 or Pin Change Interrupt 22)
ADC13/PCINT21 (ADC Input Channel 13 or Pin Change Interrupt 21)
ATmega640/1280/1281/2560/2561
PJ6/ PCINT15
0
0
0
0
0
0
-
PCINT15·PCIE1
1
PCINT15 INPUT
-
PJ2/XCK3/PCINT
11
0
0
XCK3 OUTPUT
ENABLE
1
XCK3 OUTPUT
ENABLE
XCK3
-
PCINT11·PCIE1
1
PCINT11 INPUT
XCK3 INPUT
-
Alternate Function
PJ5/ PCINT14
0
0
0
0
0
0
-
PCINT14·PCIE1
1
PCINT14 INPUT
-
PJ1/TXD3/PCINT
10
TXEN3
0
TXEN3
1
TXEN3
TXD3
-
PCINT10·PCIE1
1
PCINT10 INPUT
-
PJ4/ PCINT13
0
0
0
0
0
0
-
PCINT13·PCIE1
1
PCINT13 INPUT
-
PJ0/RXD3/PCINT
9
RXEN3
PORTJ0·PUD
RXEN3
0
0
0
-
PCINT9·PCIE1
1
PCINT9 INPUT
RXD3
-
96