ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 194
ATMEGA16U2-16AU
Manufacturer Part Number
ATMEGA16U2-16AU
Description
8-bit Microcontrollers - MCU 16K Flash
Manufacturer
Atmel
Datasheet
1.ATMEGA16U2-16AU.pdf
(310 pages)
Specifications of ATMEGA16U2-16AU
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
AVR
Data Bus Width
8 bit
Program Memory Size
16 KB
Data Ram Size
1.25 KB
Data Rom Size
512 B
Program Memory Type
Flash
Factory Pack Quantity
1250
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20.8
20.9
7799D–AVR–11/10
D+/D- Read/write
USB Software Operating modes
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.
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.
Depending on the USB operating mode, the software should perform some of the following
operations:
Power On the USB interface
Power Off the USB interface
Suspending the USB interface
• Configure PLL interface
• Enable PLL
• Check PLL lock
• Enable USB interface
• Configure USB interface (USB Endpoint 0 configuration)
• Attach USB device
• Detach USB device
• Disable USB interface
• Disable PLL
• Clear Suspend Bit
• Set USB suspend clock
• Disable PLL
SUSPI
WAKEUPI
PAD status
Active
Suspend detected = USB pad power down
Resume = USB pad wake-up
Power Down
ATmega8U2/16U2/32U2
Clear Suspend by software
Clear Resume by software
Active
194
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