ATMEGA640_07 Datasheet, PDF (28/35 Pages) ATMEL Corporation – 8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash

ATmega1281 rev. A
ATmega2560 rev. E
ATmega2560 rev. D
ATmega2560 rev. C
ATmega2560 rev. B
• Inaccurate ADC conversion in differential mode with 200x gain
• High current consumption in sleep mode
1. Inaccurate ADC conversion in differential mode with 200x gain
With AVCC < 3.6V, random conversions will be inaccurate. Typical absolute accu-
racy may reach 64 LSB.
Problem Fix/Workaround
None
2. High current consumption in sleep mode.
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 instruc-
tion 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.
No known errata.
Not sampled.
• High current consumption in sleep mode
1. High current consumption in sleep mode.
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 instruc-
tion 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.
Not sampled.
28 ATmega640/1280/1281/2560/2561
2549KS–AVR–01/07