ATmega32U2 datasheet(222/314 Pages) ATMEL

Part #	ATmega32U2

Description	8-bit Microcontroller with 8/16/32K Bytes of ISP Flash and USB Controller

PDF	314 Pages

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Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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222

7799B–AVR–07/09

ATmega8U2/16U2/32U2

This register contains the number of received byte into the current bank of the selected end-

point. The content of this register is decremented after each write access to the endpoint data

21.18.19 UEINT – USB Endpoint Number interrupt Register

• Bits 7:5 – Res: Reserved

The value read from these bits is always 0. Do not set these bits.

• Bits 4:0 – EPINT[4:0]: Endpoint Interrupts Bits

These flags are updated by the USB controller when a USB endpoint interrupt occurs (at least

one bit in UEINTX set). Each bit in this field indicates which endpoint number has generated a

USB endpoint interrupt request. Each one of these bits are independently cleared by hardware

when their respective interrupt source is served.

Bit

765

(0xF4)

EPINT4:0

UEINT

Read/Write

RRR

Initial Value

ATmega32U2 Datasheet(PDF) 222 Page - ATMEL Corporation