Datasheet
406
2490R–AVR–02/2013
ATmega64(L)
7. Added note under "Filling the Temporary Buffer (Page Loading)" about writing to the
EEPROM during an SPM page load.
8. Removed ADHSM completely.
9. Added note about masking out unused bits when reading the Program Counter in
“Stack Pointer” on page 14.
10. Added section “EEPROM Write During Power-down Sleep Mode” on page 25.
11. Changed V
HYST
value to 120 in Table 19 on page 52.
12. Added information about conversion time for Differential mode with Auto Triggering
on page 234.
13. Added t
WD_FUSE
in Table 128 on page 308.
14. Updated “Packaging Information” on page 399.
Changes from Rev.
2490B-09/02 to
Rev. 2490C-09/02
1. Changed the Endurance on the Flash to 10,000 Write/Erase Cycles.
Changes from Rev.
2490A-10/01 to
Rev. 2490B-09/02
1. Added 64-pad QFN/MLF Package and updated “Ordering Information” on page 398.
2. Added the section “Using all Locations of External Memory Smaller than 64 Kbytes”
on page 35.
3. Added the section “Default Clock Source” on page 39.
4. Renamed SPMCR to SPMCSR in entire document.
5. Added Some Preliminary Test Limits and Characterization Data
Removed some of the TBD's and corrected data in the following tables and pages:
Table 2 on page 24, Table 7 on page 38, Table 9 on page 41, Table 10 on page 41, Table
12 on page 42, Table 14 on page 43, Table 16 on page 44, Table 19 on page 52, Table 20
on page 56, Table 22 on page 58, “DC Characteristics” on page 325, Table 131 on page
327, Table 134 on page 330, Table 136 on page 333, and Table 137 - Table 144.
6. Removed Alternative Algortihm for Leaving JTAG Programming Mode.
See “Leaving Programming Mode” on page 321.
7. Improved description on how to do a polarity check of the ADC diff results in “ADC
Conversion Result” on page 242.
8. Updated Programming Figures:
Figure 138 on page 294 and Figure 147 on page 306 are updated to also reflect that AVCC
must be connected during Programming mode. Figure 142 on page 301 added to illustrate
how to program the fuses.
9. Added a note regarding usage of the “PROG_PAGELOAD (0x6)” and
“PROG_PAGEREAD (0x7)” instructions on page 313.