ATMEGA644 datasheet(21/22 Pages) ATMEL

Part #	ATMEGA644

Description	8-bit Microcontroller with 64K Bytes In-System Programmable Flash

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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21 / 22 page

2593LS–AVR–02/07

ATmega644

9.12

Rev. 2593A-06/05

Initial revision.

Updated Feauters in ”Analog-to-digital Converter” on page 233.

10.

Changed name from “SFIOR“ to “ADCSRB“ in ”Starting a Conversion” on page 235, in

”Bit 5 – ADATE: ADC Auto Trigger Enable” on page 250 and ”Bit 7, 5:3 – Res:

Reserved Bits” on page 251.

11.

Updated ”Signature Bytes” on page 286.

12.

Updated ”DC Characteristics” on page 315.

13.

Updated ”Typical Characteristics” on page 324.

14.

Updated Example in ”Supply Current of IO modules” on page 329.

15.

Updated ”Register Summary” on page 7.

16.

Updated Figure 6-2 on page 20 and Figure 21-1 on page 234.

17.

Updated ”Errata” on page 18.

18.

Updated Table 9-1 on page 47, Table 9-4 on page 51,Table 10-1 on page 57,Table 23-

1 on page 260, Table 25-6 on page 286, Table 25-14 on page 298,Table 26-3 on page

320, Table 27-1 on page 329, Table 27-2 on page 330.

ATMEGA644 Datasheet(PDF) 21 Page - ATMEL Corporation