Datasheet

437
2549O–AVR–05/12
ATmega640/1280/1281/2560/2561
38.8 Rev. 2549H-06/06
38.9 Rev. 2549G-06/06
38.10 Rev. 2549F-04/06
38.11 Rev. 2549E-04/06
38.12 Rev. 2549D-12/05
1. Updated “” on page 46.
2. Updated “OSCCAL – Oscillator Calibration Register” on page 50.
3. Added Table 31-1 on page 371.
1. Updated “Features” on page 1.
2. Added Figure 1-2 on page 3, Table 1-1 on page 3.
3. Updated “” on page 46.
4. Updated “Power Management and Sleep Modes” on page 52.
5. Updated note for Table 12-1 on page 68.
6. Updated Figure 26-9 on page 285 and Figure 26-10 on page 285.
7. Updated “Setting the Boot Loader Lock Bits by SPM” on page 324.
8. Updated “Ordering Information” on page 419.
9. Added Package information “100C1” on page 425.
10. Updated “Errata” on page 428.
1. Updated Figure 9-3 on page 31, Figure 9-4 on page 31 and Figure 9-5 on page 32.
2. Updated Table 20-2 on page 187 and Table 20-3 on page 187.
3. Updated Features in “ADC – Analog to Digital Converter” on page 275.
4. Updated “Fuse Bits” on page 336.
1. Updated “Features” on page 1.
2. Updated Table 12-1 on page 62.
3. Updated note for Table 12-1 on page 62.
4. Updated “Bit 6 – ACBG: Analog Comparator Bandgap Select” on page 273.
5. Updated “Prescaling and Conversion Timing” on page 278.
5. Updated “Maximum speed vs. V
CC
” on page 373.
6. Updated “Ordering Information” on page 419.
1. Advanced Information Status changed to Preliminary.
2. Changed number of I/O Ports from 51 to 54.
3. Updatet typos in “TCCR0A – Timer/Counter Control Register A” on page 129.
4. Updated Features in “ADC – Analog to Digital Converter” on page 275.
5. Updated Operation in“ADC – Analog to Digital Converter” on page 275
6. Updated Stabilizing Time in “Changing Channel or Reference Selection” on page 282.
7. Updated Figure 26-1 on page 276, Figure 26-9 on page 285, Figure 26-10 on page 285.
8. Updated Text in “ADCSRB – ADC Control and Status Register B” on page 290.