ATMEGA8U2-AU Atmel, ATMEGA8U2-AU Datasheet - Page 209
ATMEGA8U2-AU
Manufacturer Part Number
ATMEGA8U2-AU
Description
MCU AVR 8K FLASH 16MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8U2-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USB
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
22
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP, 32-VQFP
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
512 B
Interface Type
SPI, USART, USB
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
22
Number Of Timers
2
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA8U2-AU
Manufacturer:
Atmel
Quantity:
2 772
Part Number:
ATMEGA8U2-AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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21.18 Register Description
21.18.1
7799D–AVR–11/10
UDCON – USB Device Control Registers
Figure 21-5. USB Device Controller Endpoint Interrupt System
Processing interrupts are generated when:
Exception Interrupts are generated when:
Bit
(0xE0)
Read/Write
Initial Value
• Ready to accept IN data( EPINTx , TXINI=1)
• Received OUT data( EPINTx , RXOUTI=1)
• Received SETUP( EPINTx , RXSTPI=1)
• Stalled packet( EPINTx , STALLEDI=1)
• CRC error on OUT in isochronous mode( EPINTx , STALLEDI=1)
• Overflow( EPINTx , OVERFI=1)
• Underflow in isochronous mode( EPINTx , UNDERFI=1)
• NAK IN sent( EPINTx , NAKINI=1)
• NAK OUT sent( EPINTx , NAKOUTI=1)
UESTAX.6
UESTAX.5
UNDERFI
UEINTX.6
NAKOUTI
UEINTX.4
UEINTX.3
UEINTX.2
UEINTX.1
UEINTX.0
OVERFI
RXOUTI
STALLEDI
RXSTPI
NAKINI
TXINI
R
7
0
-
UEIENX.7
UEIENX.6
UEIENX.4
UEIENX.3
UEIENX.2
UEIENX.1
UEIENX.0
RXOUTE
STALLEDE
FLERRE
TXSTPE
TXOUTE
NAKINE
TXINE
R
6
0
-
R
5
0
-
R
4
0
-
UEINT.X
Endpoint 0
EPINT
Endpoint 1
ATmega8U2/16U2/32U2
Endpoint 2
R
3
0
-
Endpoint 3
Endpoint 4
RSTCPU
R/W
2
0
RMWKUP
R/W
1
0
DETACH
R/W
0
1
Endpoint Interrupt
UDCON
209
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