ATMEGA64 datasheet(22/25 Pages) ATMEL

22 / 25 page

ATmega64(L)

2490PS–AVR–07/09

Changes from Rev.

2490D-02/03 to Rev.

2490E-09/03

Updated note in “XDIV – XTAL Divide Control Register” on page 39.

Updated “JTAG Interface and On-chip Debug System” on page 50.

Updated “TAP – Test Access Port” on page 248 regarding JTAGEN.

Updated description for the JTD bit on page 258.

Added a note regarding JTAGEN fuse to Table 118 on page 292.

Updated R

PU values in “DC Characteristics” on page 325.

Updated “ADC Characteristics” on page 332.

Added a proposal for solving problems regarding the JTAG instruction

IDCODE in “Errata” on page 18.

Changes from Rev.

2490C-09/02 to Rev.

2490D-02/03

Added reference to Table 124 on page 296 from both SPI Serial Programming

and Self Programming to inform about the Flash page size.

Added Chip Erase as a first step under “Programming the Flash” on page 322

and “Programming the EEPROM” on page 323.

Corrected OCn waveforms in Figure 52 on page 126.

Various minor Timer1 corrections.

Improved the description in “Phase Correct PWM Mode” on page 101 and on

page 153.

Various minor TWI corrections.

Added note under "Filling the Temporary Buffer (Page Loading)" about writ-

ing to the EEPROM during an SPM page load.

Removed ADHSM completely.

Added note about masking out unused bits when reading the Program Coun-

ter 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 16.

ATMEGA64 Datasheet(PDF) 22 Page - ATMEL Corporation