ATmega1281 Atmel Corporation, ATmega1281 Datasheet - Page 99
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ATmega1281
Manufacturer Part Number
ATmega1281
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega1281-8MC
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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2549N–AVR–05/11
• T5 – Port L, Bit 2
T5, Timer/Counter5 counter source.
• ICP5 – Port L, Bit 1
ICP5, Input Capture Pin 5: The PL1 pin can serve as an Input Capture pin for Timer/Counter5.
• ICP4 – Port L, Bit 0
ICP4, Input Capture Pin 4: The PL0 pin can serve as an Input Capture pin for Timer/Counter4.
Table 13-34
shown in
Table 13-34. Overriding Signals for Alternate Functions in PL7:PL4
Table 13-35. Overriding Signals for Alternate Functions in PL3:PL0
Signal Name
Signal Name
DIEOE
DIEOV
DIEOE
DIEOV
PUOE
DDOE
DDOV
PUOE
DDOE
DDOV
PUOV
PVOE
PVOV
PTOE
PUOV
PVOE
PVOV
PTOE
AIO
AIO
DI
DI
Figure 13-5 on page
and
Table 13-35
OC5A ENABLE
PL3/OC5A
OC5A
PL7
0
0
–
–
–
–
–
0
0
0
–
0
0
0
0
–
0
0
0
–
76.
relates the alternate functions of Port L to the overriding signals
ATmega640/1280/1281/2560/2561
T5 INPUT
PL2/T5
PL6
0
0
–
–
–
–
–
0
0
0
–
0
0
0
0
0
0
–
0
0
–
OC5C ENABLE
ICP5 INPUT
PL5/OC5C
PL1/ICP5
OC5C
0
0
0
0
–
0
0
0
–
0
0
0
0
0
0
–
0
0
–
OC5B ENABLE
ICP4 INPUT
PL4/OC5B
PL0/ICP4
OC5B
0
0
0
0
–
0
0
0
–
0
0
0
0
0
0
–
0
0
–
99
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