Datasheet
ATmega48A/PA/88A/PA/168A/PA/328/P
2018 Microchip Technology Inc. Data Sheet Complete DS40002061A-page 623
(0x79) ADCH ADC Data Register High byte 259
(0x78) ADCL ADC Data Register Low byte 259
(0x77) Reserved
– – – – – – – –
(0x76) Reserved
– – – – – – – –
(0x75) Reserved
– – – – – – – –
(0x74) Reserved – – – – – – – –
(0x73) Reserved
– – – – – – – –
(0x72) Reserved
– – – – – – – –
(0x71) Reserved – – – – – – – –
(0x70) TIMSK2
– – – – – OCIE2B OCIE2A TOIE2 166
(0x6F) TIMSK1 – –ICIE1 – – OCIE1B OCIE1A TOIE1 144
(0x6E) TIMSK0
– – – – – OCIE0B OCIE0A TOIE0 118
(0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 83
(0x6C) PCMSK1
– PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 83
(0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 83
(0x6A) Reserved – – – – – – – –
(0x69) EICRA – – – – ISC11 ISC10 ISC01 ISC00 80
(0x68) PCICR
– – – – – PCIE2 PCIE1 PCIE0
(0x67) Reserved
– – – – – – – –
(0x66) OSCCAL Oscillator Calibration Register 46
(0x65) Reserved
– – – – – – – –
(0x64) PRR PRTWI PRTIM2 PRTIM0
– PRTIM1 PRSPI PRUSART0 PRADC 51
(0x63) Reserved
– – – – – – – –
(0x62) Reserved – – – – – – – –
(0x61) CLKPR CLKPCE
– – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 46
(0x60) WDTCSR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 63
0x3F (0x5F) SREG I T H S V N Z C 19
0x3E (0x5E) SPH – – – – –(SP10)
5.
SP9 SP8 22
0x3D (0x5D) SPL SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 22
0x3C (0x5C) Reserved
– – – – – – – –
0x3B (0x5B) Reserved
– – – – – – – –
0x3A (0x5A) Reserved
– – – – – – – –
0x39 (0x59) Reserved – – – – – – – –
0x38 (0x58) Reserved
– – – – – – – –
0x37 (0x57) SPMCSR SPMIE (RWWSB)
5.
SIGRD (RWWSRE)
5.
BLBSET PGWRT PGERS SPMEN 287
0x36 (0x56) Reserved – – – – – – – –
0x35 (0x55) MCUCR
–BODS
(6)
BODSE
(6)
PUD – – IVSEL IVCE 54/77/100
0x34 (0x54) MCUSR
– – – – WDRF BORF EXTRF PORF 63
0x33 (0x53) SMCR – – – – SM2 SM1 SM0 SE 49
0x32 (0x52) Reserved
– – – – – – – –
0x31 (0x51) Reserved
– – – – – – – –
0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 244
0x2F (0x4F) Reserved
– – – – – – – –
0x2E (0x4E) SPDR SPI Data Register 178
0x2D (0x4D) SPSR SPIF WCOL – – – – –SPI2X 177
0x2C (0x4C) SPCR SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0 176
0x2B (0x4B) GPIOR2 General Purpose I/O Register 2 35
0x2A (0x4A) GPIOR1 General Purpose I/O Register 1 35
0x29 (0x49) Reserved – – – – – – – –
0x28 (0x48) OCR0B Timer/Counter0 Output Compare Register B
0x27 (0x47) OCR0A Timer/Counter0 Output Compare Register A
0x26 (0x46) TCNT0 Timer/Counter0 (8-bit)
0x25 (0x45) TCCR0B FOC0A FOC0B – – WGM02 CS02 CS01 CS00
0x24 (0x44) TCCR0A COM0A1 COM0A0 COM0B1 COM0B0 – –WGM01WGM00
0x23 (0x43) GTCCR TSM – – – – – PSRASY PSRSYNC 149/168
0x22 (0x42) EEARH (EEPROM Address Register High Byte)
5.
31
0x21 (0x41) EEARL EEPROM Address Register Low Byte 31
0x20 (0x40) EEDR EEPROM Data Register 31
0x1F (0x3F) EECR – – EEPM1 EEPM0 EERIE EEMPE EEPE EERE 31
0x1E (0x3E) GPIOR0 General Purpose I/O Register 0 35
0x1D (0x3D) EIMSK – – – – – – INT1 INT0 81
0x1C (0x3C) EIFR – – – – – – INTF1 INTF0 81
0x1B (0x3B) PCIFR – – – – – PCIF2 PCIF1 PCIF0
0x1A (0x3A) Reserved – – – – – – – –
0x19 (0x39) Reserved – – – – – – – –
0x18 (0x38) Reserved – – – – – – – –
0x17 (0x37) TIFR2 – – – – – OCF2B OCF2A TOV2 167
0x16 (0x36) TIFR1 – –ICF1 – – OCF1B OCF1A TOV1 145
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page