Datasheet

10
8271BS–AVR–01/10
ATmega48A/48PA/88A/88PA/168A/168PA/328/328P
(0x7F) DIDR1 – – – – – –AIN1DAIN0D 250
(0x7E) DIDR0 – – ADC5D ADC4D ADC3D ADC2D ADC1D ADC0D 267
(0x7D) Reserved – – – – – – – –
(0x7C) ADMUX REFS1 REFS0 ADLAR – MUX3 MUX2 MUX1 MUX0 263
(0x7B) ADCSRB –ACME – – – ADTS2 ADTS1 ADTS0 266
(0x7A) ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 264
(0x79) ADCH ADC Data Register High byte 266
(0x78) ADCL ADC Data Register Low byte 266
(0x77) Reserved – – – – – – – –
(0x76) Reserved – – – – – – – –
(0x75) Reserved – – – – – – – –
(0x74) Reserved – – – – – – – –
(0x73) Reserved – – – – – – – –
(0x72) Reserved – – – – – – – –
(0x71) Reserved – – – – – – – –
(0x70) TIMSK2 – – – – – OCIE2B OCIE2A TOIE2 164
(0x6F) TIMSK1
– –ICIE1 – – OCIE1B OCIE1A TOIE1 140
(0x6E) TIMSK0
– – – – – OCIE0B OCIE0A TOIE0 112
(0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 75
(0x6C) PCMSK1
– PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 75
(0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 75
(0x6A) Reserved
– – – – – – – –
(0x69) EICRA – – – –ISC11ISC10ISC01ISC00 72
(0x68) PCICR – – – – – PCIE2 PCIE1 PCIE0
(0x67) Reserved – – – – – – – –
(0x66) OSCCAL Oscillator Calibration Register 37
(0x65) Reserved – – – – – – – –
(0x64) PRR PRTWI PRTIM2 PRTIM0 – PRTIM1 PRSPI PRUSART0 PRADC 42
(0x63) Reserved – – – – – – – –
(0x62) Reserved – – – – – – – –
(0x61) CLKPR CLKPCE – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 37
(0x60) WDTCSR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 55
0x3F (0x5F) SREG I T H S V N Z C 9
0x3E (0x5E) SPH – – – – – (SP10)
5.
SP9 SP8 12
0x3D (0x5D) SPL SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 12
0x3C (0x5C) Reserved – – – – – – – –
0x3B (0x5B) Reserved – – – – – – – –
0x3A (0x5A) Reserved – – – – – – – –
0x39 (0x59) Reserved – – – – – – – –
0x38 (0x58) Reserved – – – – – – – –
0x37 (0x57) SPMCSR SPMIE (RWWSB)
5.
– (RWWSRE)
5.
BLBSET PGWRT PGERS SELFPRGEN 294
0x36 (0x56) Reserved – – – – – – – –
0x35 (0x55) MCUCR –BODS
(6)
BODSE
(6)
PUD – – IVSEL IVCE 45/69/93
0x34 (0x54) MCUSR
– – – – WDRF BORF EXTRF PORF 55
0x33 (0x53) SMCR
– – – –SM2SM1SM0SE 40
0x32 (0x52) Reserved – – – – – – – –
0x31 (0x51) Reserved
– – – – – – – –
0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 248
0x2F (0x4F) Reserved – – – – – – – –
0x2E (0x4E) SPDR SPI Data Register 176
0x2D (0x4D) SPSR SPIF WCOL
– – – – – SPI2X 175
0x2C (0x4C) SPCR SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0 174
0x2B (0x4B) GPIOR2 General Purpose I/O Register 2 25
0x2A (0x4A) GPIOR1 General Purpose I/O Register 1 25
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 144/166
0x22 (0x42) EEARH (EEPROM Address Register High Byte)
5.
21
0x21 (0x41) EEARL EEPROM Address Register Low Byte 21
0x20 (0x40) EEDR EEPROM Data Register 21
0x1F (0x3F) EECR – – EEPM1 EEPM0 EERIE EEMPE EEPE EERE 21
0x1E (0x3E) GPIOR0 General Purpose I/O Register 0 25
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page