ATmega1280 Atmel Corporation, ATmega1280 Datasheet - Page 29

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ATmega1280

Manufacturer Part Number
ATmega1280
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega1280

Flash (kbytes)
128 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
86
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
5
Twi (i2c)
1
Uart
4
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
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
4
Pwm Channels
15
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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11. Errata
11.1
11.2
11.3
2549NS–AVR–05/11
ATmega640 rev. B
ATmega640 rev. A
ATmega1280 rev. B
1.
2. High current consumption in sleep mode
Before entering sleep, interrupts not used to wake the part from the sleep mode should be
disabled.
1.
2. High current consumption in sleep mode
1.
Inaccurate ADC conversion in differential mode with 200× gain
High current consumption in sleep mode
Inaccurate ADC conversion in differential mode with 200× gain
High current consumption in sleep mode
Inaccurate ADC conversion in differential mode with 200× gain
High current consumption in sleep mode
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may
reach 64 LSB.
Problem Fix/Workaround
None.
If a pending interrupt cannot wake the part up from the selected sleep mode, the current
consumption will increase during sleep when executing the SLEEP instruction directly after
a SEI instruction.
Problem Fix/Workaround
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may
reach 64 LSB.
Problem Fix/Workaround
None.
If a pending interrupt cannot wake the part up from the selected sleep mode, the current
consumption will increase during sleep when executing the SLEEP instruction directly after
a SEI instruction.
Problem Fix/Workaround
Before entering sleep, interrupts not used to wake the part from the sleep mode should be
disabled.
With AVCC <3.6V, random conversions will be inaccurate. Typical absolute accuracy may
reach 64 LSB.
Inaccurate ADC conversion in differential mode with 200× gain
Inaccurate ADC conversion in differential mode with 200× gain
Inaccurate ADC conversion in differential mode with 200× gain
ATmega640/1280/1281/2560/2561
29

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