ATmega1281 Atmel Corporation, ATmega1281 Datasheet - Page 88

• 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

2549N–AVR–05/11
Table 13-16. Overriding Signals for Alternate Functions PE7:PE4
Table 13-17. Overriding Signals for Alternate Functions in PE3:PE0
Note:
DIEOE
DIEOV
Signal
PUOE
PUOV
DDOE
DDOV
DIEOE
DIEOV
Name
PVOE
PVOV
Signal
DDOE
PUOE
PUOV
DDOV
Name
PVOE
PVOV
AIO
PE0
AIO
DI
DI
1. PDO/PDI only available at PE1/PE0 for ATmega1281/2561.
INT7 INPUT/ICP3
PE3/AIN1/OC3A
OC3B ENABLE
PE7/INT7/ICP3
INT7 ENABLE
AIN1 INPUT
INPUT
OC3B
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
–
ATmega640/1280/1281/2560/2561
PE2/AIN0/XCK0
XCK0 OUTPUT
XCK0 OUTPUT
XCK0 OUTPUT
INT7 INPUT/T3
XCK0 INPUT
AIN0 INPUT
INT6 ENABLE
PE6/INT6/T3
ENABLE
ENABLE
INPUT
0
1
0
0
0
0
0
0
0
0
0
0
1
–
PE5/INT5/OC3C
OC3C ENABLE
PE1/PDO
INT5 ENABLE
INT5 INPUT
TXEN0
TXEN0
TXEN0
TXD0
TXD0
OC3C
0
1
0
0
–
0
–
0
0
0
0
1
–
(1)
/
PCINT8 • PCIE1
PORTE0 • PUD
PCINT8 INPUT
PE4/INT4/OC3B
RXD0/PCINT8
OC3B ENABLE
INT4 ENABLE
PE0/PDI
INT4 INPUT
RXEN0
RXEN0
RXD0
OC3B
0
0
0
1
–
0
0
0
0
1
–
(1)
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