AT90USB647-AU Atmel, AT90USB647-AU Datasheet - Page 32
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AT90USB647-AU
Manufacturer Part Number
AT90USB647-AU
Description
MCU, 8BIT, AVR, 64K FLASH, USB, 64TQFP
Manufacturer
Atmel
Datasheet
1.AT90USB1286-MU.pdf
(35 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90USB647-AU
Manufacturer:
MURATA
Quantity:
1 000
Company:
Part Number:
AT90USB647-AUR
Manufacturer:
Atmel
Quantity:
1 951
If a pending interrupt cannot wake the part up from the selected mode, the current consump-
tion will increase during sleep when executing the SLEEP instruction directly after a SEI
instruction.
Problem Fix/workaround
Before entering sleep, interrupts not used to wake up the part from the sleep mode should
be disabled.
1. Asynchronous timer interrupt wake up from sleep generates multiple interrupts
If the CPU core is in sleep and wakes-up from an asynchronous timer interrupt and then go
back in sleep mode again it may wake up several times.
Problem Fix/workaround
A s o f t w a r e w o r k a r o u n d i s t o w a i t w i t h p e r f o r m i n g t h e s l e e p i n s t r u c t i o n u n t i l
TCNT2>OCR2+1.
AT90USB64/128
32
7593KS–AVR–11/09