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DOC7707 bảng dữ liệu(PDF) 192 Page - List of Unclassifed Manufacturers

tên linh kiện DOC7707
Giải thích chi tiết về linh kiện  Microcontroller with 8/16K Bytes of ISP Flash and USB Controller
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nhà sản xuất  ETC1 [List of Unclassifed Manufacturers]
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DOC7707 bảng dữ liệu(HTML) 192 Page - List of Unclassifed Manufacturers

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192
7707F–AVR–11/10
AT90USB82/162
Figure 19-11. Pad behaviour
The SUSPI flag indicated that a suspend state has been detected on the USB bus. This flag
automatically put the USB pad in Idle. The detection of a non-idle event sets the WAKEUPI flag
and wakes-up the USB pad.
Moreover, the pad can also be put in the “idle” mode if the DETACH bit is set. It come back in
the active mode when the DETACH bit is cleared.
19.8
D+/D- Read/write
The level of D+ and D- can be read and written using the UPOE register. The USB controller has
to be enabled to write a value. For read operation, the USB controller can be enabled or
disabled.
Idle mode
Active mode
USBE=1
& DETACH=0
& suspend
USBE=0
| DETACH=1
| suspend
SUSPI
Suspend detected = USB pad power down
Clear Suspend by software
Resume = USB pad wake-up
Clear Resume by software
WAKEUPI
PAD status
Active
Power Down
Active



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