ATmega32U2 datasheet(194/314 Pages) ATMEL

tên linh kiện	ATmega32U2

Giải thích chi tiết về linh kiện	8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller

PDF	314 Pages

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nhà sản xuất	ATMEL [ATMEL Corporation]

Trang chủ	http://www.atmel.com

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194

7799B–AVR–07/09

ATmega8U2/16U2/32U2

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.

20.8

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.

20.9

USB Software Operating modes

Depending on the USB operating mode, the software should perform some of the following

operations:

Power On the USB interface

• Configure PLL interface

• Enable PLL

• Check PLL lock

• Enable USB interface

• Configure USB interface (USB Endpoint 0 configuration)

• Attach USB device

Power Off the USB interface

• Detach USB device

• Disable USB interface

• Disable PLL

Suspending the USB interface

• Clear Suspend Bit

• Set USB suspend clock

• Disable PLL

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

ATmega32U2 bảng dữ liệu(PDF) 194 Page - ATMEL Corporation