290
7799D–AVR–11/10
ATmega8U2/16U2/32U2
(0x7C)
Reserved
-
(0x7B)
Reserved
-
(0x7A)
Reserved
-
(0x79)
Reserved
-
(0x78)
Reserved
-
(0x77)
Reserved
-
(0x76)
Reserved
-
(0x75)
Reserved
-
(0x74)
Reserved
-
(0x73)
Reserved
-
(0x72)
Reserved
-
(0x71)
Reserved
-
(0x70)
Reserved
-
(0x6F)
TIMSK1
-
ICIE1
-
OCIE1C
OCIE1B
OCIE1A
TOIE1
(0x6E)
TIMSK0
-
OCIE0B
OCIE0A
TOIE0
(0x6D)
Reserved
-
(0x6C)
PCMSK1
-
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
(0x6B)
PCMSK0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
(0x6A)
EICRB
ISC71
ISC70
ISC61
ISC60
ISC51
ISC50
ISC41
ISC40
(0x69)
EICRA
ISC31
ISC30
ISC21
ISC20
ISC11
ISC10
ISC01
ISC00
(0x68)
PCICR
-
PCIE1
PCIE0
(0x67)
Reserved
-
(0x66)
OSCCAL
Oscillator Calibration Register
(0x65)
PRR1
PRUSB
-
PRUSART1
(0x64)
PRR0
-
PRTIM0
-
PRTIM1
PRSPI
-
(0x63)
REGCR
-
REGDIS
(0x62)
WDTCKD
-
WDEWIFCM
WCLKD2
WDEWIF
WDEWIE
WCLKD1
WCLKD0
(0x61)
CLKPR
CLKPCE
-
CLKPS3
CLKPS2
CLKPS1
CLKPS0
(0x60)
WDTCSR
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
0x3F (0x5F)
SREG
I
T
H
S
V
N
Z
C
0x3E (0x5E)
SPH
SP15
SP14
SP13
SP12
SP11
SP10
SP9
SP8
0x3D (0x5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
0x3C (0x5C)
Reserved
-
0x3B (0x5B)
Reserved
-
0x3A (0x5A)
Reserved
-
0x39 (0x59)
Reserved
-
0x38 (0x58)
Reserved
-
0x37 (0x57)
SPMCSR
SPMIE
RWWSB
SIGRD
RWWSRE
BLBSET
PGWRT
PGERS
SPMEN
0x36 (0x56)
Reserved
-
0x35 (0x55)
MCUCR
-
IVSEL
IVCE
0x34 (0x54)
MCUSR
-
USBRF
-
WDRF
BORF
EXTRF
PORF
0x33 (0x53)
SMCR
-
SM2
SM1
SM0
SE
0x32 (0x52)
Reserved
-
0x31 (0x51)
DWDR
debugWIRE Data Register
0x30 (0x50)
ACSR
ACD
ACBG
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
0x2F (0x4F)
Reserved
-
0x2E (0x4E)
SPDR
SPI Data Register
0x2D (0x4D)
SPSR
SPIF
WCOL
-
SPI2X
0x2C (0x4C)
SPCR
SPIE
SPE
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
0x2B (0x4B)
GPIOR2
General Purpose I/O Register 2
0x2A (0x4A)
GPIOR1
General Purpose I/O Register 1
0x29 (0x49)
PLLCSR
-
PLLP2
PLLP1
PLLP0
PLLE
PLOCK
0x28 (0x48)
OCR0B
Timer/Counter0 Output Compare Register B
0x27 (0x47)
OCR0A
Timer/Counter0 Output Compare Register A
0x26 (0x46)
TCNT0
Timer/Counter0 (8 Bit)
0x25 (0x45)
TCCR0B
FOC0A
FOC0B
-
WGM02
CS02
CS01
CS00
0x24 (0x44)
TCCR0A
COM0A1
COM0A0
COM0B1
COM0B0
-
WGM01
WGM00
0x23 (0x43)
GTCCR
TSM
-
PSRASY
PSRSYNC
0x22 (0x42)
EEARH
-
EEPROM Address Register High Byte
0x21 (0x41)
EEARL
EEPROM Address Register Low Byte
0x20 (0x40)
EEDR
EEPROM Data Register
0x1F (0x3F)
EECR
-
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
0x1E (0x3E)
GPIOR0
General Purpose I/O Register 0
0x1D (0x3D)
EIMSK
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INT0
0x1C (0x3C)
EIFR
INTF7
INTF6
INTF5
INTF4
INTF3
INTF2
INTF1
INTF0
0x1B (0x3B)
PCIFR
-
PCIF1
PCIF0
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
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