7
8183FS–AVR–06/12
ATtiny24A/44A/84A
4.
Register Summary
Address
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Page
0x3F (0x5F)
SREG
I
T
H
S
V
N
Z
C
Page 14
0x3E (0x5E)
SPH
–
SP9
SP8
Page 13
0x3D (0x5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
Page 13
0x3C (0x5C)
OCR0B
Timer/Counter0 – Output Compare Register B
Page 83
0x3B (0x5B)
GIMSK
–
INT0
PCIE1
PCIE0
–
Page 50
0x3A (0x5A)
GIFR
–
INTF0
PCIF1
PCIF0
–
Page 51
0x39 (0x59)
TIMSK0
–
OCIE0B
OCIE0A
TOIE0
Page 83
0x38 (0x58)
TIFR0
–
OCF0B
OCF0A
TOV0
Page 84
0x37 (0x57)
SPMCSR
–
RSIG
CTPB
RFLB
PGWRT
PGERS
SPMEN
Page 156
0x36 (0x56)
OCR0A
Timer/Counter0 – Output Compare Register A
Page 83
0x35 (0x55)
MCUCR
BODS
PUD
SE
SM1
SM0
BODSE
ISC01
ISC00
Pages 36, 50, 66
0x34 (0x54)
MCUSR
–
WDRF
BORF
EXTRF
PORF
Page 44
0x33 (0x53)
TCCR0B
FOC0A
FOC0B
–
WGM02
CS02
CS01
CS00
Page 82
0x32 (0x52)
TCNT0
Timer/Counter0
Page 83
0x31 (0x51)
OSCCAL
CAL7
CAL6CAL5CAL4CAL3CAL2CAL1
CAL0
Page 31
0x30 (0x50)
TCCR0A
COM0A1
COM0A0
COM0B1
COM0B0
–
WGM01
WGM00
Page 79
0x2F (0x4F)
TCCR1A
COM1A1
COM1A0
COM1B1
COM1B0
–
WGM11
WGM10
Page 106
0x2E (0x4E)
TCCR1B
ICNC1
ICES1
–
WGM13
WGM12
CS12
CS11
CS10
Page 108
0x2D (0x4D)
TCNT1H
Timer/Counter1 – Counter Register High Byte
Page 110
0x2C (0x4C)
TCNT1L
Timer/Counter1 – Counter Register Low Byte
Page 110
0x2B (0x4B)
OCR1AH
Timer/Counter1 – Compare Register A High Byte
Page 110
0x2A (0x4A)
OCR1AL
Timer/Counter1 – Compare Register A Low Byte
Page 110
0x29 (0x49)
OCR1BH
Timer/Counter1 – Compare Register B High Byte
Page 110
0x28 (0x48)
OCR1BL
Timer/Counter1 – Compare Register B Low Byte
Page 110
0x27 (0x47)
DWDR
DWDR[7:0]
Page 151
0x26 (0x46)
CLKPR
CLKPCE
–
CLKPS3
CLKPS2
CLKPS1
CLKPS0
Page 31
0x25 (0x45)
ICR1H
Timer/Counter1 - Input Capture Register High Byte
Page 111
0x24 (0x44)
ICR1L
Timer/Counter1 - Input Capture Register Low Byte
Page 111
0x23 (0x43)
GTCCR
TSM
–
PSR10
Page 114
0x22 (0x42)
TCCR1C
FOC1A
FOC1B
–
Page 109
0x21 (0x41)
WDTCSR
WDIF
WDIE
WDP3
WDCE
WDE
WDP2
WDP1
WDP0
Page 44
0x20 (0x40)
PCMSK1
–
PCINT11
PCINT10
PCINT9
PCINT8
Page 51
0x1F (0x3F)
EEARH
–
–EEAR8
Page 20
0x1E (0x3E)
EEARL
EEAR7
EEAR6
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
Page 21
0x1D (0x3D)
EEDR
EEPROM Data Register
Page 21
0x1C (0x3C)
EECR
–
EEPM1
EEPM0
EERIE
EEMPE
EEPE
EERE
Page 23
0x1B (0x3B)
PORTA
PORTA7
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
PORTA1
PORTA0
Page 66
0x1A (0x3A)
DDRA
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
Page 66
0x19 (0x39)
PINA
PINA7
PINA6
PINA5
PINA4
PINA3
PINA2
PINA1
PINA0
Page 67
0x18 (0x38)
PORTB
–
PORTB3
PORTB2
PORTB1
PORTB0
Page 67
0x17 (0x37)
DDRB
–
DDB3
DDB2
DDB1
DDB0
Page 67
0x16 (0x36)
PINB
–
PINB3
PINB2
PINB1
PINB0
Page 67
0x15 (0x35)
GPIOR2
General Purpose I/O Register 2
Page 22
0x14 (0x34)
GPIOR1
General Purpose I/O Register 1
Page 23
0x13 (0x33)
GPIOR0
General Purpose I/O Register 0
Page 23
0x12 (0x32)
PCMSK0
PCINT7
PCINT6
PCINT5
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
Page 52
0x11 (0x31))
Reserved
–
0x10 (0x30)
USIBR
USI Buffer Register
Page 127
0x0F (0x2F)
USIDR
USI Data Register
Page 126
0x0E (0x2E)
USISR
USISIF
USIOIF
USIPF
USIDC
USICNT3
USICNT2
USICNT1
USICNT0
Page 125
0x0D (0x2D)
USICR
USISIE
USIOIE
USIWM1
USIWM0
USICS1
USICS0
USICLK
USITC
Page 123
0x0C (0x2C)
TIMSK1
–
–ICIE1
–
OCIE1B
OCIE1A
TOIE1
Page 111
0x0B (0x2B)
TIFR1
–
–ICF1
–
OCF1B
OCF1A
TOV1
Page 112
0x0A (0x2A)
Reserved
–
0x09 (0x29)
Reserved
–
0x08 (0x28)
ACSR
ACD
ACBG
ACO
ACI
ACIE
ACIC
ACIS1
ACIS0
Page 129
0x07 (0x27)
ADMUX
REFS1
REFS0
MUX5
MUX4
MUX3
MUX2
MUX1
MUX0
Page 144
0x06 (0x26)
ADCSRA
ADEN
ADSC
ADATE
ADIF
ADIE
ADPS2
ADPS1
ADPS0
Page 146
0x05 (0x25)
ADCH
ADC Data Register High Byte
Page 148
0x04 (0x24)
ADCL
ADC Data Register Low Byte
Page 148
0x03 (0x23)
ADCSRB
BIN
ACME
–ADLAR
–
ADTS2
ADTS1
ADTS0
Pages 130, 148
0x02 (0x22)
Reserved
–
0x01 (0x21)
DIDR0
ADC7D
ADC6D
ADC5D
ADC4D
ADC3D
ADC2D
ADC1D
ADC0D
Pages 131, 149
0x00 (0x20)
PRR
–
PRTIM1
PRTIM0
PRUSI
PRADC
Page 37