24 Register Summary

OffsetNameBit Pos.76543210
0x00PINA7:0PINAn[7:0]
0x00SIGROW_DEVICEID07:0DEVICEID[7:0]
0x01DDRA 7:0DDRAn[7:0]
0x01SIGROW_DEVICEID17:0DEVICEID[7:0]
0x02PORTA7:0PORTAn[7:0]
0x02SIGROW_DEVICEID27:0DEVICEID[7:0]
0x03PUEA7:0PUEAn[7:0]
0x04PINB7:0    PINBn[3:0]
0x05DDRB 7:0    DDRBn[3:0]
0x06PORTB7:0    PORTBn[3:0]
0x06SIGROW_SERNUM07:0SERNUM[7:0]
0x07PUEB7:0    PUEBn[3:0]
0x07SIGROW_SERNUM17:0SERNUM[7:0]
0x08UDR07:0TXB / RXB[7:0]
0x08SIGROW_SERNUM27:0SERNUM[7:0]
0x09UBRR0L and UBRR0H7:0UBRR0[7:0]
15:8    UBRR0[11:8]
0x09SIGROW_SERNUM37:0SERNUM[7:0]
0x0ASIGROW_SERNUM47:0SERNUM[7:0]
0x0BUCSR0D7:0RXSIERXSSFDE     
0x0BSIGROW_SERNUM57:0SERNUM[7:0]
0x0CUCSR0C7:0UMSEL0n[1:0]UPM0n[1:0]USBS0UCSZ01 / UDORD0UCSZ00 / UCPHA0UCPOL0
0x0CSIGROW_SERNUM67:0SERNUM[7:0]
0x0DUCSR0B7:0RXCIE0TXCIE0UDRIE0RXEN0TXEN0UCSZ02RXB80TXB80
0x0DSIGROW_SERNUM77:0SERNUM[7:0]
0x0EUCSR0A7:0RXC0TXC0UDRE0FE0DOR0UPE0U2X0MPCM0
0x0ESIGROW_SERNUM87:0SERNUM[7:0]
0x0FPCMSK07:0PCINTn[7:0]
0x0FSIGROW_SERNUM97:0SERNUM[7:0]
0x10PCMSK17:0    PCINT11PCINT10PCINT9PCINT8
0x11PCIFR7:0      PCIF1PCIF0
0x12PCICR7:0      PCIE1PCIE0
0x13EIMSK7:0       INT0
0x14EIFR7:0       INTF0
0x15EICRA7:0      ISC0[1:0]
0x16PORTCR7:0      BBMBBBMA
0x17DIDR07:0ADC7DADC6DADC5DADC4DADC3DADC2DADC1DADC0D

0x18

Reserved         
0x19ADCL and ADCH7:0ADC7ADC6ADC5ADC4ADC3ADC2ADC1ADC0
15:8      ADC9ADC8
0x19ADCL and ADCH7:0ADC1ADC0      
15:8ADC9ADC8ADC7ADC6ADC5ADC4ADC3ADC2
0x1BADMUX7:0REFSn[1:0]   MUXn[2:0]
0x1CADCSRB7:0ADLAR    ADTSn[2:0]
0x1DADCSRA7:0ADENADSCADATEADIFADIEADPSn[2:0]
0x1EACSRB7:0      ACOEACPMUX
0x1FACSRA7:0ACDACBGACOACIACIEACICACISn[1:0]

0x20

...

0x21

Reserved         
0x22ICR0L and ICR0H7:0ICR0[7:0]
15:8ICR0[15:8]
0x24OCR0BL and OCR0BH7:0OCR0B[7:0]
15:8OCR0B[15:8]
0x26OCR0AL and OCR0AH7:0OCR0A[7:0]
15:8OCR0A[15:8]
0x28TCNT0L and TCNT0H7:0TCNT0[7:0]
15:8TCNT0[15:8]
0x2ATIFR07:0  ICF0  OCF0BOCF0ATOV0
0x2BTIMSK07:0  ICIE0  OCIE0BOCIE0ATOIE0
0x2CTCCR0C7:0FOC0AFOC0B      
0x2DTCCR0B7:0ICNC0ICES0 WGM03WGM02CS0[2:0]
0x2ETCCR0A7:0COM0An[1:0]COM0Bn[1:0]  WGM0n[1:0]
0x2FGTCCR7:0TSM     REMAPPSR

0x30

Reserved         
0x31WDTCSR7:0WDIFWDIEWDPn WDEWDPn[2:0]
0x32NVMCSR7:0NVMBSY       
0x33NVMCMD7:0  NVMCMD[5:0]
0x34VLMCSR7:0VLMFVLMIE   VLM[2:0]
0x35PRR7:0     PRUSART0PRADCPRTIM0
0x36CLKPSR7:0    CLKPS[3:0]
0x37CLKMSR7:0      CLKMS[1:0]

0x38

Reserved         
0x39OSCCAL7:0CAL[7:0]
0x3ASMCR7:0    SM[2:0]SE
0x3BRSTFLR7:0    WDRF EXTRFPORF
0x3CCCP7:0CCP[7:0]
0x3DSPL and SPH7:0 SP6SP5SP4SP3SP2SP1SP0
15:8  

0x3F

...

0x5E

Reserved         
0x5FSREG7:0ITHSVNZC