Datasheet

148
ATtiny4/5/9/10 [DATASHEET]
8127F–AVR–02/2013
18. 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 12
0x3E SPH Stack Pointer High Byte Page 12
0x3D SPL Stack Pointer Low Byte Page 12
0x3C CCP CPU Change Protection Byte Page 11
0x3B RSTFLR – – – –WDRF– EXTRF PORF Page 34
0x3A SMCR – – – – SM2 SM1 SM0 SE Page 25
0x39 OSCCAL Oscillator Calibration Byte Page 21
0x38 Reserved – – – – – – – –
0x37 CLKMSR – – – – – – CLKMS1 CLKMS0 Page 21
0x36 CLKPSR – – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 Page 22
0x35 PRR – – – – – – PRADC PRTIM0 Page 26
0x34 VLMCSR VLMF VLMIE – – – VLM2 VLM1 VLM0 Page 33
0x33 NVMCMD – – NVM Comman Page 114
0x32 NVMCSR NVMBSY – – – – – – – Page 114
0x31 WDTCSR WDIF WDIE WDP3 – WDE WDP2 WDP1 WDP0 Page 32
0x30 Reserved – – – – – – – –
0x2F GTCCR TSM – – – – – –PSR Page 78
0x2E TCCR0A COM0A1 COM0A0 COM0B1 COM0B0 – – WGM01 WGM00 Page 72
0x2D TCCR0B ICNC0 ICES0 – WGM03 WGM02 CS02 CS01 CS00 Page 74
0x2C TCCR0C FOC0A FOC0B – – – – – – Page 75
0x2B TIMSK0 – –ICIE0– – OCIE0B OCIE0A TOIE0 Page 77
0x2A TIFR0 – –ICF0– – OCF0B OCF0A TOV0 Page 78
0x29 TCNT0H Timer/Counter0 – Counter Register High Byte Page 76
0x28 TCNT0L Timer/Counter0 – Counter Register Low Byte Page 76
0x27 OCR0AH Timer/Counter0 – Compare Register A High Byte Page 76
0x26 OCR0AL Timer/Counter0 – Compare Register A Low Byte Page 76
0x25 OCR0BH Timer/Counter0 – Compare Register B High Byte Page 76
0x24 OCR0BL Timer/Counter0 – Compare Register B Low Byte Page 76
0x23 ICR0H Timer/Counter0 - Input Capture Register High Byte Page 77
0x22 ICR0L Timer/Counter0 - Input Capture Register Low Byte Page 77
0x21 Reserved – – – – – – – –
0x20 Reserved – – – – – – – –
0x1F ACSR ACD – ACO ACI ACIE ACIC ACIS1 ACIS0 Page 80
0x1E Reserved – – – – – – – –
0x1D ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 Page 92
0x1C ADCSRB – – – – – ADTS2 ADTS1 ADTS0 Page 93
0x1B ADMUX – – – – – – MUX1 MUX0 Page 92
0x1A Reserved – – – – – – – –
0x19 ADCL ADC Conversion Result Page 94
0x18 Reserved – – – – – – – –
0x17 DIDR0 – – – – ADC3D ADC2D ADC1D ADC0D Page 81, Page 94
0x16 Reserved – – – – – – – –
0x15 EICRA – – – – – – ISC01 ISC00 Page 37
0x14 EIFR
– – – – – – – INTF0 Page 38
0x13 EIMSK – – – – – – – INT0 Page 38
0x12 PCICR
– – – – – – – PCIE0 Page 39
0x11 PCIFR
– – – – – – –PCIF0 Page 39
0x10 PCMSK – – – – PCINT3 PCINT2 PCINT1 PCINT0 Page 39
0x0F Reserved
– – – – – – – –
0x0E Reserved
– – – – – – – –
0x0D Reserved – – – – – – – –
0x0C PORTCR
– – – – – – BBMB – Page 50
0x0B Reserved
– – – – – – – –
0x0A Reserved – – – – – – – –
0x09 Reserved
– – – – – – – –
0x08 Reserved
– – – – – – – –
0x07 Reserved
– – – – – – – –
0x06 Reserved – – – – – – – –
0x05 Reserved
– – – – – – – –
0x04 Reserved – – – – – – – –
0x03 PUEB
– – – – PUEB3 PUEB2 PUEB1 PUEB0 Page 50
0x02 PORTB – – – – PORTB3 PORTB2 PORTB1 PORTB0 Page 51
0x01 DDRB
– – – – DDRB3 DDRB2 DDRB1 DDRB0 Page 51
0x00 PINB
– – – – PINB3 PINB2 PINB1 PINB0 Page 51