atmega644v ATMEL Corporation, atmega644v Datasheet - Page 19

• Manufacturer Part Number: atmega644v
• Description: Atmega644 8-bit Avr Microcontroller With 64k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

9. Datasheet Revision History
9.1
9.2
9.3
9.4
2593MS–AVR–08/07
Rev. 2593M - 08/07
Rev. 2593L - 02/07
Rev. 2593K - 01/07
Rev. 2593J - 09/06
Please note that the referring page numbers in this section are referred to this document. The
referring revision in this section are referring to the document revision.
1.
2.
3.
4.
5.
6.
7.
8.
1.
2.
3.
4.
1
2.
3.
4.
5.
1.
2.
3.
4.
5.
Updated
Updated description in
Updated
Updated
Updated
Updated code example in
Added
All Register Descriptions moved to the end of their respective chapters.
Updated bit description on
Updated typos in “External Interrupts”
UpdatedTable 24-8 on page 280
Updated
Removed the “Not recommended in new designs“ notice on
Updated
Updated
Updated
Added note to
Updated
Updated
Updated
Updated
Updated
14-4 on page
page 147
”System and Reset Characteristics” on page
”Features” on page
”Power-on Reset” on page
”Brown-out Detection” on page
”Internal Voltage Reference” on page
Table 24-7 on page
Figure 2-1 on page
”PCIFR – Pin Change Interrupt Flag Register” on page
Table 21-4 on page
”Calibrated Internal RC Oscillator” on page
”Fast PWM Mode” on page
”Device Identification Register” on page
”Signature Bytes” on page
Table 13-3 on page 97,Table 13-6 on page
and
126,
Table 15-8 on page
”DC Characteristics” on page
Table 14-5 on page
”Stack Pointer” on page
”MCUCR – MCU Control Register” on page
page 153
1.
3.
280.
248.
148.
287.
46.
117.
Section 11.1.6 on page 63
47.
127,
316.
Table 15-3 on page
48.
13.
260.
320.
98,
33.
Table 14-3 on page
page
62.
ATmega644
1.
146,
58.
Table 15-6 on
126,
Table
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