22

ATmega64(L)

2490LS–AVR–10/06

7.

Improved description on how to do a polarity check of the ADC diff results in

“ADC Conversion Result” on page 244.

8.

Updated Programming Figures:

Figure 138 on page 296 and Figure 147 on page 309 are updated to also reflect that

AVCC must be connected during Programming mode. Figure 142 on page 305

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 316.

10. Updated “TWI – Two-wire Serial Interface” on page 199.

More details regarding use of the TWI Power-down operation and using the TWI as

master with low TWBRR values are added into the data sheet. Added the note at

the end of the “Bit Rate Generator Unit” on page 205. Added the description at the

end of “Address Match Unit” on page 206.

11. Updated Description of OSCCAL Calibration Byte.

In the data sheet, it was not explained how to take advantage of the calibration

bytes for 2, 4, and 8 MHz Oscillator selections. This is now added in the following

sections:

Improved description of “OSCCAL – Oscillator Calibration Register

and “Calibration Byte” on page 295.

12. When using external clock there are some limitations regards to change of

frequency. This is descried in “External Clock” on page 44 and Table 131 on

page 330.

13. Added a sub section regarding OCD-system and power consumption in the

section “Minimizing Power Consumption” on page 50.

14. Corrected typo (WGM-bit setting) for:

–

“Fast PWM Mode” on page 100 (Timer/Counter0).

–

“Phase Correct PWM Mode” on page 102 (Timer/Counter0).

–

“Fast PWM Mode” on page 153 (Timer/Counter2).

–

“Phase Correct PWM Mode” on page 155 (Timer/Counter2).

15. Corrected Table 81 on page 193 (USART).

16. Corrected Table 102 on page 264 (Boundary-Scan)