ATMEGA16U2-16AU Atmel, ATMEGA16U2-16AU Datasheet - Page 191
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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20.5
20.5.1
20.5.2
7799D–AVR–11/10
Power modes
Idle mode
Power-down
UESTAX.6
UESTAX.5
UEINTX.6
UEINTX.4
UEINTX.3
UEINTX.2
UEINTX.1
UEINTX.0
UNDERFI
NAKOUTI
RXOUTI
STALLEDI
OVERFI
RXSTPI
NAKINI
TXINI
Figure 20-10. USB Endpoint Interrupt vector sources
Each endpoint has 8 interrupts sources associated with flags, and each source can be enabled
to trigger the corresponding endpoint interrupt.
If, for an endpoint, at least one of the sources is enabled to trigger interrupt, the corresponding
event(s) will make the program branch to the USB Endpoint Interrupt vector. The user may
determine the source (endpoint) of the interrupt by reading the
Register” on page
In Idle mode, the CPU is halted (CPU clock stopped). The Idle mode is taken wether the USB
controller is running or not. The CPU can wake up on any USB interrupts.
In Power-down mode, the oscillator is stopped and halts all the clocks (CPU and peripherals).
The USB controller wakes up when:
• the WAKEUPI interrupt is triggered (single asynchronous interrupt)
UEIENX.7
UEIENX.6
UEIENX.4
UEIENX.3
UEIENX.2
UEIENX.1
UEIENX.0
RXOUTE
STALLEDE
TXOUTE
FLERRE
TXSTPE
NAKINE
TXINE
210.
UEINT.X
Endpoint 0
EPINT
Endpoint 1
Endpoint 2
Endpoint 3
Endpoint 4
ATmega8U2/16U2/32U2
“UDINT – USB Device Interrupt
Interrupt Vec
USB Endpoi
191
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