Datasheet
7
ATtiny25/45/85 [DATASHEET]
2586QS–AVR–08/2013
4. Register Summary
Note: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page
0x3F SREG I T H S V N Z C page 8
0x3E SPH – – – – – – SP9 SP8 page 11
0x3D SPL SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 page 11
0x3C Reserved –
0x3B GIMSK – INT0 PCIE – – – – – page 51
0x3A GIFR – INTF0 PCIF – – – – – page 52
0x39 TIMSK – OCIE1A OCIE1B OCIE0A OCIE0B TOIE1 TOIE0 – pages 81, 102
0x38 TIFR – OCF1A OCF1B OCF0A OCF0B TOV1 TOV0 – page 81
0x37 SPMCSR – – RSIG CTPB RFLB PGWRT PGERS SPMEN page 145
0x36 Reserved –
0x35 MCUCR BODS PUD SE SM1 SM0 BODSE ISC01 ISC00 pages 37, 51, 64
0x34 MCUSR – – – – WDRF BORF EXTRF PORF page 44,
0x33 TCCR0B FOC0A FOC0B – – WGM02 CS02 CS01 CS00 page 79
0x32 TCNT0 Timer/Counter0 page 80
0x31 OSCCAL Oscillator Calibration Register page 31
0x30 TCCR1 CTC1 PWM1A COM1A1 COM1A0 CS13 CS12 CS11 CS10 pages 89, 100
0x2F TCNT1 Timer/Counter1 pages 91, 102
0x2E OCR1A Timer/Counter1 Output Compare Register A pages 91, 102
0x2D OCR1C Timer/Counter1 Output Compare Register C pages 91, 102
0x2C GTCCR TSM PWM1B COM1B1 COM1B0 FOC1B FOC1A PSR1 PSR0 pages 77, 90, 101
0x2B OCR1B Timer/Counter1 Output Compare Register B page 92
0x2A TCCR0A COM0A1 COM0A0 COM0B1 COM0B0 – WGM01 WGM00 page 77
0x29 OCR0A Timer/Counter0 – Output Compare Register A page 80
0x28 OCR0B Timer/Counter0 – Output Compare Register B page 81
0x27 PLLCSR LSM – – – – PCKE PLLE PLOCK pages 94, 103
0x26 CLKPR CLKPCE – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 page 32
0x25 DT1A DT1AH3 DT1AH2 DT1AH1 DT1AH0 DT1AL3 DT1AL2 DT1AL1 DT1AL0 page 107
0x24 DT1B DT1BH3 DT1BH2 DT1BH1 DT1BH0 DT1BL3 DT1BL2 DT1BL1 DT1BL0 page 107
0x23 DTPS1 - - - - - - DTPS11 DTPS10 page 106
0x22 DWDR DWDR[7:0] page 140
0x21 WDTCR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 page 45
0x20 PRR – PRTIM1 PRTIM0 PRUSI PRADC page 36
0x1F EEARH EEAR8 page 20
0x1E EEARL EEAR7 EEAR6 EEAR5 EEAR4 EEAR3 EEAR2 EEAR1 EEAR0 page 21
0x1D EEDR EEPROM Data Register page 21
0x1C EECR – – EEPM1 EEPM0 EERIE EEMPE EEPE EERE page 21
0x1B Reserved –
0x1A Reserved –
0x19 Reserved –
0x18 PORTB – – PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 page 64
0x17 DDRB – – DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 page 64
0x16 PINB – – PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 page 64
0x15 PCMSK – – PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 page 52
0x14 DIDR0
– – ADC0D ADC2D ADC3D ADC1D AIN1D AIN0D pages 121, 138
0x13 GPIOR2 General Purpose I/O Register 2 page 10
0x12 GPIOR1 General Purpose I/O Register 1 page 10
0x11 GPIOR0 General Purpose I/O Register 0 page 10
0x10 USIBR USI Buffer Register page 115
0x0F USIDR USI Data Register page 115
0x0E USISR USISIF USIOIF USIPF USIDC USICNT3 USICNT2 USICNT1 USICNT0 page 115
0x0D USICR USISIE USIOIE USIWM1 USIWM0 USICS1 USICS0 USICLK USITC page 116
0x0C Reserved
–
0x0B Reserved
–
0x0A Reserved –
0x09 Reserved
–
0x08 ACSR ACD ACBG
ACO ACI ACIE – ACIS1 ACIS0 page 120
0x07 ADMUX REFS1 REFS0 ADLAR REFS2 MUX3 MUX2
MUX1 MUX0 page 134
0x06 ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 page 136
0x05 ADCH ADC Data Register High Byte page 137
0x04 ADCL ADC Data Register Low Byte page 137
0x03 ADCSRB BIN ACME IPR – – ADTS2 ADTS1 ADTS0 pages 120, 137
0x02 Reserved –
0x01 Reserved
–
0x00 Reserved
–