Datasheet

Offset Name Bit Pos.
0x54 MCUSR 7:0 WDRF BORF EXTRF PORF
0x55 MCUCR 7:0 BODS BODSE PUD IVSEL IVCE
0x56 Reserved
0x57 SPMCSR 7:0 SPMIE RWWSB SIGRD RWWSRE BLBSET PGWRT PGERS SPMEN
0x57 SPMCSR 7:0 SPMIE RWWSB SIGRD RWWSRE BLBSET PGWRT PGERS SPMEN
0x58
...
0x5C
Reserved
0x5D SPL and SPH
7:0 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0
15:8 SP10 SP9 SP8
0x5F SREG 7:0 I T H S V N Z C
0x60 WDTCSR 7:0 WDIF WDIE WDP[3] WDCE WDE WDP[2:0]
0x61 CLKPR 7:0 CLKPCE CLKPS[3:0]
0x62
...
0x63
Reserved
0x64 PRR 7:0 PRTWI0 PRTIM2 PRTIM0 PRTIM1 PRSPI0 PRUSART0 PRADC
0x65 Reserved
0x66 OSCCAL 7:0 CAL[7:0]
0x67 Reserved
0x68 PCICR 7:0 PCIE2 PCIE1 PCIE0
0x69 EICRA 7:0 ISC1[1:0] ISC0[1:0]
0x6A Reserved
0x6B PCMSK0 7:0 PCINT[7:0]
0x6C PCMSK1 7:0 PCINT[14:8]
0x6D PCMSK2 7:0 PCINT[23:16]
0x6E TIMSK0 7:0 OCIE0B OCIE0A TOIE0
0x6F TIMSK1 7:0 ICIE1 OCIE1B OCIE1A TOIE1
0x70 TIMSK2 7:0 OCIE2B OCIE2A TOIE2
0x71
...
0x77
Reserved
0x78
ADCL and ADCH
(ADLAR = 0)
7:0 ADC[7:0]
15:8 ADC[9:8]
0x78
ADCL and ADCH
(ADLAR = 1)
7:0 ADC[1:0]
15:8 ADC[9:2]
0x7A ADCSRA 7:0 ADEN ADSC ADATE ADIF ADIE ADPS[2:0]
0x7B ADCSRB 7:0 ACME ADTS[2:0]
0x7C ADMUX 7:0 REFS[1:0] ADLAR MUX[3:0]
0x7D Reserved
0x7E DIDR0 7:0 ADC7D ADC6D ADC5D ADC4D ADC3D ADC2D ADC1D ADC0D
0x7F DIDR1 7:0 AIN1D AIN0D
0x80 TCCR1A 7:0 COM1A[1:0] COM1B[1:0] WGM1[1:0]
0x81 TCCR1B 7:0 ICNC1 ICES1 WGM13 WGM12 CS1[2:0]
0x82 TCCR1C 7:0 FOC1A FOC1B
0x83 Reserved
ATmega48PA/88PA/168PA
Register Summary
© 2018 Microchip Technology Inc.
Datasheet Complete
DS40002011A-page 473