
177
8024A–AVR–04/08
ATmega8HVA/16HVA
(0x7D)
Reserved
–
(0x7C)
VADMUX
–
VADMUX[3:0]
(0x7B)
Reserved
–
(0x7A)
VADCSR
–
VADEN
VADSC
VADCCIF
VADCCIE
(0x79)
VADCH
–
VADC Data Register High byte
(0x78)
VADCL
VADC Data Register Low byte
(0x77)
Reserved
–
(0x76)
Reserved
–
(0x75)
Reserved
–
(0x74)
Reserved
–
(0x73)
Reserved
–
(0x72)
Reserved
–
(0x71)
Reserved
–
(0x70)
Reserved
–
(0x6F)
TIMSK1
–
ICIE1
OCIE1B
OCIE1A
TOIE1
(0x6E)
TIMSK0
–
ICIE0
OCIE0B
OCIE0A
TOIE0
(0x6D)
Reserved
–
(0x6C)
Reserved
–
(0x6B)
Reserved
–
(0x6A)
Reserved
–
(0x69)
EICRA
–
ISC21
ISC20
ISC11
ISC10
ISC01
ISC00
(0x68)
Reserved
–
(0x67)
Reserved
–
(0x66)
FOSCCAL
Fast Oscillator Calibration Register
(0x65)
Reserved
–
(0x64)
PRR0
–
PRVRM
–
PRSPI
PRTIM1
PRTIM0
PRVADC
(0x63)
Reserved
–
(0x62)
Reserved
–
(0x61)
CLKPR
CLKPCE
–
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
–
SIGRD
CTPB
RFLB
PGWRT
PGERS
SPMEN
0x36 (0x56)
Reserved
–
0x35 (0x55)
MCUCR
–
–CKOE
PUD
–
0x34 (0x54)
MCUSR
–
OCDRF
WDRF
BODRF
EXTRF
PORF
0x33 (0x53)
SMCR
–
SM[2:0]
SE
0x32 (0x52)
Reserved
–
0x31 (0x51)
DWDR
debugWIRE Data Register
0x30 (0x50)
Reserved
–
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)
OCR0B
Timer/Counter0 Output Compare Register B
0x28 (0x48)
OCR0A
Timer/Counter0 Output Compare Register A
0x27 (0x47)
TCNT0H
Timer/Counter0 (8 Bit) High Byte
0x26 (0x46)
TCNT0L
Timer/Counter0 (8 Bit) Low Byte
0x25 (0x45)
TCCR0B
–
CS02
CS01
CS00
0x24 (0x44)
TCCR0A
TCW0
ICEN0
ICNC0
ICES0
ICS0
–
–WGM00
0x23 (0x43)
GTCCR
TSM
–
PSRSYNC
0x22 (0x42)
Reserved
–
0x21 (0x41)
EEAR
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
–
INT2
INT1
INT0
0x1C (0x3C)
EIFR
–
INTF2
INTF1
INTF0
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page