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AT90USB1287 bảng dữ liệu(PDF) 29 Page - ATMEL Corporation

tên linh kiện AT90USB1287
Giải thích chi tiết về linh kiện  Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
PDF  35 Pages
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nhà sản xuất  ATMEL [ATMEL Corporation]
Trang chủ  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90USB1287 bảng dữ liệu(HTML) 29 Page - ATMEL Corporation

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29
7593KS–AVR–11/09
AT90USB64/128
Problem Fix/workaround
No known workaround, enable AT90USB64/128 TWI first versus the others nodes of the
TWI network.
2.
High current consumption in sleep mode
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 again it may wake up multiple times.
Problem Fix/workaround
A software workaround is to wait with performing the sleep instruction until
TCNT2>OCR2+1.



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