Datasheet

328
7810C–AVR–10/12
Atmel ATmega328P [Preliminary]
(0x7D) Reserved – – – – – – – –
(0x7C) ADMUX REFS1 REFS0 ADLAR – MUX3 MUX2 MUX1 MUX0 256
(0x7B) ADCSRB –ACME – – – ADTS2 ADTS1 ADTS0 259
(0x7A) ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 257
(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 155
(0x6F) TIMSK1 – –ICIE1 – – OCIE1B OCIE1A TOIE1 131
(0x6E) TIMSK0
– – – – – OCIE0B OCIE0A TOIE0 102
(0x6D) PCMSK2 PCINT23 PCINT22 PCINT21 PCINT20 PCINT19 PCINT18 PCINT17 PCINT16 65
(0x6C) PCMSK1
– PCINT14 PCINT13 PCINT12 PCINT11 PCINT10 PCINT9 PCINT8 65
(0x6B) PCMSK0 PCINT7 PCINT6 PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 65
(0x6A) Reserved – – – – – – – –
(0x69) EICRA – – – –ISC11ISC10ISC01ISC00 62
(0x68) PCICR – – – – – PCIE2 PCIE1 PCIE0
(0x67) Reserved – – – – – – – –
(0x66) OSCCAL Oscillator Calibration Register 35
(0x65) Reserved – – – – – – – –
(0x64) PRR PRTWI PRTIM2 PRTIM0 – PRTIM1 PRSPI PRUSART0 PRADC 40
(0x63) Reserved – – – – – – – –
(0x62) Reserved – – – – – – – –
(0x61) CLKPR CLKPCE – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 35
(0x60) WDTCSR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 53
0x3F (0x5F) SREG I T H S V N Z C 10
0x3E (0x5E) SPH – – – – – (SP10) 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) – (RWWSRE) BLBSET PGWRT PGERS SELFPRGEN 284
0x36 (0x56) Reserved – – – – – – – –
0x35 (0x55) MCUCR
– BODS BODSE PUD – – IVSEL IVCE 42/59/84
0x34 (0x54) MCUSR
– – – – WDRF BORF EXTRF PORF 53
0x33 (0x53) SMCR
– – – –SM2SM1SM0SE 38
0x32 (0x52) Reserved – – – – – – – –
0x31 (0x51) Reserved
– – – – – – – –
0x30 (0x50) ACSR ACD ACBG ACO ACI ACIE ACIC ACIS1 ACIS0 239
0x2F (0x4F) Reserved
– – – – – – – –
0x2E (0x4E) SPDR SPI Data Register 166
0x2D (0x4D) SPSR SPIF WCOL – – – – – SPI2X 166
0x2C (0x4C) SPCR SPIE SPE DORD MSTR CPOL CPHA SPR1 SPR0 164
0x2B (0x4B) GPIOR2 General Purpose I/O Register 2 24
0x2A (0x4A) GPIOR1 General Purpose I/O Register 1 24
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 135/157
0x22 (0x42) EEARH (EEPROM Address Register High Byte) 20
0x21 (0x41) EEARL EEPROM Address Register Low Byte 20
0x20 (0x40) EEDR EEPROM Data Register 20
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page