AT90USB647-AU Atmel, AT90USB647-AU Datasheet - Page 34

• Manufacturer Part Number: AT90USB647-AU
• Description: MCU, 8BIT, AVR, 64K FLASH, USB, 64TQFP
• Manufacturer: Atmel

Specifications of AT90USB647-AU

• No. Of I/o's: 48
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 64KB
• Oscillator Type: External, Internal
• Controller Family/series: AVR USB
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Details

10.8
10.9
10.10 Changes from 7593J to 7593K
34
Changes from 7593H to 7593I
Changes from 7593I to 7593J
AT90USB64/128
7. Added description to access unique serial number located in Signature Row see
1. Updated
1. Updated
2. Updated
3. Removed ATmega32U6 errata section.
1. Corrected
2. Corrected ordering information for
3. Removed the ATmega32U6 device and updated the datasheet accordingly.
4. Updated Assembly Code Exemple in
“Reading the Signature Row from Software” on page
6.4 ”AT90USB1287” on page 20 andSection 6.2 ”AT90USB647” on page
Table 8-2
Table 8-2
“Ordering Information” on page
Figure 5-7 on page
in
in
“Brown-out Detection” on page
“Brown-out Detection” on page
33,
Figure 5-8 on page 33
Section 6.3 ”AT90USB1286” on page
“Watchdog Reset” on page
435.
60. Unused BOD levels removed.
60. BOD level 100 removed.
360.
and
Figure 5-9 on page
61.
19,
18.
7593KS–AVR–11/09
Section
34.