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ATMEGA8U2_14 Datasheet, PDF (290/310 Pages) ATMEL Corporation – 125 Powerful Instructions – Most Single Clock Cycle Execution
◁
ATmega8U2/16U2/32U2
Address
(0x7C)
(0x7B)
(0x7A)
(0x79)
(0x78)
(0x77)
(0x76)
(0x75)
(0x74)
(0x73)
(0x72)
(0x71)
(0x70)
(0x6F)
(0x6E)
(0x6D)
(0x6C)
(0x6B)
(0x6A)
(0x69)
(0x68)
(0x67)
(0x66)
(0x65)
(0x64)
(0x63)
(0x62)
(0x61)
(0x60)
0x3F (0x5F)
0x3E (0x5E)
0x3D (0x5D)
0x3C (0x5C)
0x3B (0x5B)
0x3A (0x5A)
0x39 (0x59)
0x38 (0x58)
0x37 (0x57)
0x36 (0x56)
0x35 (0x55)
0x34 (0x54)
0x33 (0x53)
0x32 (0x52)
0x31 (0x51)
0x30 (0x50)
0x2F (0x4F)
0x2E (0x4E)
0x2D (0x4D)
0x2C (0x4C)
0x2B (0x4B)
0x2A (0x4A)
0x29 (0x49)
0x28 (0x48)
0x27 (0x47)
0x26 (0x46)
0x25 (0x45)
0x24 (0x44)
0x23 (0x43)
0x22 (0x42)
0x21 (0x41)
0x20 (0x40)
0x1F (0x3F)
0x1E (0x3E)
0x1D (0x3D)
0x1C (0x3C)
0x1B (0x3B)
Name
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
TIMSK1
TIMSK0
Reserved
PCMSK1
PCMSK0
EICRB
EICRA
PCICR
Reserved
OSCCAL
PRR1
PRR0
REGCR
WDTCKD
CLKPR
WDTCSR
SREG
SPH
SPL
Reserved
Reserved
Reserved
Reserved
Reserved
SPMCSR
Reserved
MCUCR
MCUSR
SMCR
Reserved
DWDR
ACSR
Reserved
SPDR
SPSR
SPCR
GPIOR2
GPIOR1
PLLCSR
OCR0B
OCR0A
TCNT0
TCCR0B
TCCR0A
GTCCR
EEARH
EEARL
EEDR
EECR
GPIOR0
EIMSK
EIFR
PCIFR
Bit 7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCINT7
ISC71
ISC31
-
-
PRUSB
-
-
-
CLKPCE
WDIF
I
SP15
SP7
-
-
-
-
-
SPMIE
-
-
-
-
-
ACD
-
SPIF
SPIE
-
FOC0A
COM0A1
TSM
-
-
INT7
INTF7
-
Bit 6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PCINT6
ISC70
ISC30
-
-
-
-
-
-
-
WDIE
T
SP14
SP6
-
-
-
-
-
RWWSB
-
-
-
-
-
ACBG
-
WCOL
SPE
-
FOC0B
COM0A0
-
-
-
INT6
INTF6
-
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ICIE1
-
OCIE1C
OCIE1B
OCIE1A
TOIE1
-
-
-
OCIE0B
OCIE0A
TOIE0
-
-
-
-
-
-
-
PCINT12
PCINT11
PCINT10
PCINT9
PCINT8
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
ISC61
ISC60
ISC51
ISC50
ISC41
ISC40
ISC21
ISC20
ISC11
ISC10
ISC01
ISC00
-
-
-
-
PCIE1
PCIE0
-
-
-
-
-
-
Oscillator Calibration Register
-
-
-
-
-
PRUSART1
PRTIM0
-
PRTIM1
PRSPI
-
-
-
-
-
-
-
REGDIS
WDEWIFCM
WCLKD2
WDEWIF
WDEWIE
WCLKD1
WCLKD0
-
-
CLKPS3
CLKPS2
CLKPS1
CLKPS0
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
H
S
V
N
Z
C
SP13
SP12
SP11
SP10
SP9
SP8
SP5
SP4
SP3
SP2
SP1
SP0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
SIGRD
RWWSRE
BLBSET
PGWRT
PGERS
SPMEN
-
-
-
-
-
-
-
-
-
-
IVSEL
IVCE
USBRF
-
WDRF
BORF
EXTRF
PORF
-
-
SM2
SM1
SM0
SE
-
-
-
-
-
-
debugWIRE Data Register
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
-
-
-
-
-
-
SPI Data Register
-
-
-
-
-
SPI2X
DORD
MSTR
CPOL
CPHA
SPR1
SPR0
General Purpose I/O Register 2
General Purpose I/O Register 1
-
PLLP2
PLLP1
PLLP0
PLLE
PLOCK
Timer/Counter0 Output Compare Register B
Timer/Counter0 Output Compare Register A
Timer/Counter0 (8 Bit)
-
-
WGM02
CS02
CS01
CS00
COM0B1
COM0B0
-
-
WGM01
WGM00
-
-
-
-
PSRASY
PSRSYNC
-
-
EEPROM Address Register High Byte
EEPROM Address Register Low Byte
EEPROM Data Register
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
General Purpose I/O Register 0
INT5
INT4
INT3
INT2
INT1
INT0
INTF5
INTF4
INTF3
INTF2
INTF1
INTF0
-
-
-
-
PCIF1
PCIF0
Page
page 135
page 106
page 87
page 87
page 85
page 84
page 86
page 38
page 46
page 46
page 196
page 57
page 39
page 56
page 9
page 12
page 12
page 242
page 65, 82
page 55
page 45
page 245
page 224
page 147
page 146
page 145
page 24
page 24
page 40
page 106
page 106
page 106
page 105
page 105
page 89
page 20
page 20
page 20
page 21
page 25
page 86
page 86
page 86
7799D–AVR–11/10
290
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