ATtiny2313 register table (also ATtiny4313.)
Walking along the table below fills the bits of a
Register
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
-
/
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
/
0
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
0
1
R16
R17
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
1
2
DIDR
UBRRH
UCSRC
PCMSK1
PCMSK2
ACSR
UBRRL
UCSRB
UCSRA
UDR
RXB
TXB
USICR
USISR
USIDR
2
3
PIND
DDRD
PORTD
GPIOR0
GPIOR1
GPIOR2
PINB
DDRB
PORTB
PINA
DDRA
PORTA
EECR
EEDR
EEAR
EEARL
3
4
PCMSK
WDTCSR
TCCR1C
GTCCR
ICR1
ICR1L
ICR1H
CLKPR
OCR1B
OCR1BL
OCR1BH
OCR1
OCR1L
OCR1A
OCR1AL
OCR1H
OCR1AH
TCNT1
TCNT1L
TCNT1H
TCCR1B
TCCR1A
4
5
TCCR0A
OSCCAL
TCNT0
TCCR0B
MCUSR
MCUCR
OCR0A
SPMCSR
TIFR
TIMSK
EIFR
GIMSK
OCR0B
SPL
SPH
SREG
5
6
6
7
7
8
8
9
9
A
A
B
B
C
C
D
D
E
E
F
F
/
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
/
.