ATMEGA8U2_14 Datasheet, PDF(288/310 Page) ATMEL Corporation – 125 Powerful Instructions – Most Single Clock Cycle Execution

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ATMEGA8U2_14 Datasheet, PDF (288/310 Pages) ATMEL Corporation – 125 Powerful Instructions – Most Single Clock Cycle Execution

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ATmega8U2/16U2/32U2

28. Register Summary

Address

(0xFF)

(0xFE)

(0xFD)

(0xFC)

(0xFB)

(0xFA)

(0xF9)

(0xF8)

(0xF7)

(0xF6)

(0xF5)

(0xF4)

(0xF3)

(0xF2)

(0xF1)

(0xF0)

(0xEF)

(0xEE)

(0xED)

(0xEC)

(0xEB)

(0xEA)

(0xE9)

(0xE8)

(0xE7)

(0xE6)

(0xE5)

(0xE4)

(0xE3)

(0xE2)

(0xE1)

(0xE0)

(0xDF)

(0xDE)

(0xDD)

(0xDC)

(0xDB)

(0xDA)

(0xD9)

(0xD8)

(0xD7)

(0xD6)

(0xD5)

(0xD4)

(0xD3)

(0xD2)

(0xD1)

(0xD0)

(0xCF)

(0xCE)

(0xCD)

(0xCC)

(0xCB)

(0xCA)

(0xC9)

(0xC8)

(0xC7)

(0xC6)

(0xC5)

(0xC4)

(0xC3)

(0xC2)

(0xC1)

(0xC0)

(0xBF)

Name

Reserved

Reserved

Reserved

Reserved

UPOE

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

UEINT

Reserved

UEBCLX

UEDATX

UEIENX

UESTA1X

UESTA0X

UECFG1X

UECFG0X

UECONX

UERST

UENUM

UEINTX

Reserved

UDMFN

UDFNUMH

UDFNUML

UDADDR

UDIEN

UDINT

UDCON

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

USBCON

Reserved

Reserved

Reserved

Reserved

Reserved

CLKSTA

CLKSEL1

CLKSEL0

Reserved

UDR1

UBRR1H

UBRR1L

UCSR1D

UCSR1C

UCSR1B

UCSR1A

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Reserved

Bit 7

-

-

-

-

UPWE1

-

-

-

-

-

-

-

Bit 6

-

-

-

-

UPWE0

-

-

-

-

-

-

-

-

FLERRE

NAKINE

-

-

CFGOK

OVERFI

-

EPTYPE1:0

-

-

-

-

-

-

FIFOCON

NAKINI

-

-

-

-

-

-

ADDEN

-

-

-

-

-

-

-

-

-

-

USBE

-

-

-

-

-

-

RCCKSEL3

RCSUT1

-

UPRSME

UPRSMI

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

RCCKSEL2

RCSUT0

-

-

-

-

UMSEL11

RXCIE1

RXC1

-

-

-

-

-

-

-

-

-

-

UMSEL10

TXCIE1

TXC1

-

-

-

-

-

-

-

-

-

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

UPDRV1

UPDRV0

SCKI

DATAI

DPI

DMI

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

EPINT4:0

-

-

-

-

-

-

BYCT7:0

DAT7:0

-

NAKOUTE

RXSTPE

RXOUTE

STALLEDE

TXINE

-

-

-

CTRLDIR

CURRBK1:0

UNDERFI

-

DTSEQ1:0

NBUSYBK1:0

EPSIZE2:0

EPBK1:0

ALLOC

-

-

-

-

-

-

EPDIR

STALLRQ

STALLRQC

RSTDT

-

-

EPEN

-

EPRST4:0

-

-

-

EPNUM2:0

RWAL

NAKOUTI

RXSTPI

RXOUTI

STALLEDI

TXINI

-

-

-

-

-

-

-

FNCERR

-

-

-

-

-

-

-

FNUM10:8

FNUM7:0

UADD6:0

EORSME

WAKEUPE

EORSTE

SOFE

-

SUSPE

EORSMI

WAKEUPI

EORSTI

SOFI

-

SUSPI

-

RPUTX

-

RSTCPU

RMWKUP

DETACH

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

FRZCLK

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

RCON

EXTON

RCCKSEL1 RCCKSEL0 EXCKSEL3 EXCKSEL2 EXCKSEL1

EXCKSEL0

EXSUT1

EXSUT0

RCE

EXTE

-

CLKS

-

-

-

-

-

-

USART1 I/O Data Register

-

-

USART1 Baud Rate Register High Byte

USART1 Baud Rate Register Low Byte

-

-

-

-

CTSEN

RTSEN

UPM11

UPM10

USBS1

UCSZ11

UCSZ10

UCPOL1

UDRIE1

RXEN1

TXEN1

UCSZ12

RXB81

TXB81

UDRE1

FE1

DOR1

PE1

U2X1

MPCM1

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

7799DâAVRâ11/10

Page

page 195

page 222

page 221

page 221

page 220

page 218

page 217

page 216

page 215

page 214

page 214

page 214

page 219

page 213

page 213

page 213

page 212

page 211

page 210

page 209

page 195

page 38

page 38

page 37

page 167

page 171

page 171

page 171

page 169

page 168

page 167

288

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