\ Partname: ATmega16A \ generated automatically \ TIMER_COUNTER_0 &83 constant TCCR0 \ Timer/Counter Control Register $80 constant TCCR0_FOC0 \ Force Output Compare $40 constant TCCR0_WGM00 \ Waveform Generation Mode 0 $30 constant TCCR0_COM0 \ Compare Match Output Modes $08 constant TCCR0_WGM01 \ Waveform Generation Mode 1 $07 constant TCCR0_CS0 \ Clock Selects &82 constant TCNT0 \ Timer/Counter Register &92 constant OCR0 \ Output Compare Register &89 constant TIMSK \ Timer/Counter Interrupt Mask Register $02 constant TIMSK_OCIE0 \ Timer/Counter0 Output Compare Match Interrupt register $01 constant TIMSK_TOIE0 \ Timer/Counter0 Overflow Interrupt Enable &88 constant TIFR \ Timer/Counter Interrupt Flag register $02 constant TIFR_OCF0 \ Output Compare Flag 0 $01 constant TIFR_TOV0 \ Timer/Counter0 Overflow Flag &80 constant SFIOR \ Special Function IO Register $01 constant SFIOR_PSR10 \ Prescaler Reset Timer/Counter1 and Timer/Counter0 \ TIMER_COUNTER_1 &79 constant TCCR1A \ Timer/Counter1 Control Register A $C0 constant TCCR1A_COM1A \ Compare Output Mode 1A, bits $30 constant TCCR1A_COM1B \ Compare Output Mode 1B, bits $08 constant TCCR1A_FOC1A \ Force Output Compare 1A $04 constant TCCR1A_FOC1B \ Force Output Compare 1B $03 constant TCCR1A_WGM1 \ Waveform Generation Mode &78 constant TCCR1B \ Timer/Counter1 Control Register B $80 constant TCCR1B_ICNC1 \ Input Capture 1 Noise Canceler $40 constant TCCR1B_ICES1 \ Input Capture 1 Edge Select $18 constant TCCR1B_WGM1 \ Waveform Generation Mode $07 constant TCCR1B_CS1 \ Prescaler source of Timer/Counter 1 &76 constant TCNT1 \ Timer/Counter1 Bytes &74 constant OCR1A \ Timer/Counter1 Output Compare Register Bytes &72 constant OCR1B \ Timer/Counter1 Output Compare Register Bytes &70 constant ICR1 \ Timer/Counter1 Input Capture Register Bytes \ EXTERNAL_INTERRUPT &91 constant GICR \ General Interrupt Control Register $C0 constant GICR_INT \ External Interrupt Request 1 Enable $20 constant GICR_INT2 \ External Interrupt Request 2 Enable $02 constant GICR_IVSEL \ Interrupt Vector Select $01 constant GICR_IVCE \ Interrupt Vector Change Enable &90 constant GIFR \ General Interrupt Flag Register $C0 constant GIFR_INTF \ External Interrupt Flags $20 constant GIFR_INTF2 \ External Interrupt Flag 2 &85 constant MCUCR \ General Interrupt Control Register $0C constant MCUCR_ISC1 \ Interrupt Sense Control 1 Bits $03 constant MCUCR_ISC0 \ Interrupt Sense Control 0 Bits &84 constant MCUCSR \ MCU Control And Status Register $40 constant MCUCSR_ISC2 \ Interrupt Sense Control 2 \ EEPROM &62 constant EEAR \ EEPROM Address Register Bytes &61 constant EEDR \ EEPROM Data Register &60 constant EECR \ EEPROM Control Register $08 constant EECR_EERIE \ EEPROM Ready Interrupt Enable $04 constant EECR_EEMWE \ EEPROM Master Write Enable $02 constant EECR_EEWE \ EEPROM Write Enable $01 constant EECR_EERE \ EEPROM Read Enable \ CPU &95 constant SREG \ Status Register $80 constant SREG_I \ Global Interrupt Enable $40 constant SREG_T \ Bit Copy Storage $20 constant SREG_H \ Half Carry Flag $10 constant SREG_S \ Sign Bit $08 constant SREG_V \ Two's Complement Overflow Flag $04 constant SREG_N \ Negative Flag $02 constant SREG_Z \ Zero Flag $01 constant SREG_C \ Carry Flag &93 constant SP \ Stack Pointer &81 constant OSCCAL \ Oscillator Calibration Value \ TIMER_COUNTER_2 &69 constant TCCR2 \ Timer/Counter2 Control Register $80 constant TCCR2_FOC2 \ Force Output Compare $40 constant TCCR2_WGM20 \ Waveform Genration Mode $30 constant TCCR2_COM2 \ Compare Output Mode bits $08 constant TCCR2_WGM21 \ Waveform Generation Mode $07 constant TCCR2_CS2 \ Clock Select bits &68 constant TCNT2 \ Timer/Counter2 &67 constant OCR2 \ Timer/Counter2 Output Compare Register &66 constant ASSR \ Asynchronous Status Register $08 constant ASSR_AS2 \ Asynchronous Timer/counter2 $04 constant ASSR_TCN2UB \ Timer/Counter2 Update Busy $02 constant ASSR_OCR2UB \ Output Compare Register2 Update Busy $01 constant ASSR_TCR2UB \ Timer/counter Control Register2 Update Busy \ SPI &47 constant SPDR \ SPI Data Register &46 constant SPSR \ SPI Status Register $80 constant SPSR_SPIF \ SPI Interrupt Flag $40 constant SPSR_WCOL \ Write Collision Flag $01 constant SPSR_SPI2X \ Double SPI Speed Bit &45 constant SPCR \ SPI Control Register $80 constant SPCR_SPIE \ SPI Interrupt Enable $40 constant SPCR_SPE \ SPI Enable $20 constant SPCR_DORD \ Data Order $10 constant SPCR_MSTR \ Master/Slave Select $08 constant SPCR_CPOL \ Clock polarity $04 constant SPCR_CPHA \ Clock Phase $03 constant SPCR_SPR \ SPI Clock Rate Selects \ USART &44 constant UDR \ USART I/O Data Register &43 constant UCSRA \ USART Control and Status Register A $80 constant UCSRA_RXC \ USART Receive Complete $40 constant UCSRA_TXC \ USART Transmitt Complete $20 constant UCSRA_UDRE \ USART Data Register Empty $10 constant UCSRA_FE \ Framing Error $08 constant UCSRA_DOR \ Data overRun $04 constant UCSRA_UPE \ Parity Error $02 constant UCSRA_U2X \ Double the USART transmission speed $01 constant UCSRA_MPCM \ Multi-processor Communication Mode &42 constant UCSRB \ USART Control and Status Register B $80 constant UCSRB_RXCIE \ RX Complete Interrupt Enable $40 constant UCSRB_TXCIE \ TX Complete Interrupt Enable $20 constant UCSRB_UDRIE \ USART Data register Empty Interrupt Enable $10 constant UCSRB_RXEN \ Receiver Enable $08 constant UCSRB_TXEN \ Transmitter Enable $04 constant UCSRB_UCSZ2 \ Character Size $02 constant UCSRB_RXB8 \ Receive Data Bit 8 $01 constant UCSRB_TXB8 \ Transmit Data Bit 8 &64 constant UCSRC \ USART Control and Status Register C $80 constant UCSRC_URSEL \ Register Select $40 constant UCSRC_UMSEL \ USART Mode Select $30 constant UCSRC_UPM \ Parity Mode Bits $08 constant UCSRC_USBS \ Stop Bit Select $06 constant UCSRC_UCSZ \ Character Size $01 constant UCSRC_UCPOL \ Clock Polarity &64 constant UBRRH \ USART Baud Rate Register Hight Byte &41 constant UBRRL \ USART Baud Rate Register Low Byte \ TWI &32 constant TWBR \ TWI Bit Rate register &86 constant TWCR \ TWI Control Register $80 constant TWCR_TWINT \ TWI Interrupt Flag $40 constant TWCR_TWEA \ TWI Enable Acknowledge Bit $20 constant TWCR_TWSTA \ TWI Start Condition Bit $10 constant TWCR_TWSTO \ TWI Stop Condition Bit $08 constant TWCR_TWWC \ TWI Write Collition Flag $04 constant TWCR_TWEN \ TWI Enable Bit $01 constant TWCR_TWIE \ TWI Interrupt Enable &33 constant TWSR \ TWI Status Register $F8 constant TWSR_TWS \ TWI Status $03 constant TWSR_TWPS \ TWI Prescaler &35 constant TWDR \ TWI Data register &34 constant TWAR \ TWI (Slave) Address register $FE constant TWAR_TWA \ TWI (Slave) Address register Bits $01 constant TWAR_TWGCE \ TWI General Call Recognition Enable Bit \ ANALOG_COMPARATOR &40 constant ACSR \ Analog Comparator Control And Status Register $80 constant ACSR_ACD \ Analog Comparator Disable $40 constant ACSR_ACBG \ Analog Comparator Bandgap Select $20 constant ACSR_ACO \ Analog Compare Output $10 constant ACSR_ACI \ Analog Comparator Interrupt Flag $08 constant ACSR_ACIE \ Analog Comparator Interrupt Enable $04 constant ACSR_ACIC \ Analog Comparator Input Capture Enable $03 constant ACSR_ACIS \ Analog Comparator Interrupt Mode Select bits \ AD_CONVERTER &39 constant ADMUX \ The ADC multiplexer Selection Register $C0 constant ADMUX_REFS \ Reference Selection Bits $20 constant ADMUX_ADLAR \ Left Adjust Result $1F constant ADMUX_MUX \ Analog Channel and Gain Selection Bits &38 constant ADCSRA \ The ADC Control and Status register $80 constant ADCSRA_ADEN \ ADC Enable $40 constant ADCSRA_ADSC \ ADC Start Conversion $20 constant ADCSRA_ADATE \ When this bit is written to one,the Timer/Counter2 prescaler will be reset.The bit will be cleared by hardware after the operation is performed.Writing a zero to this bit will have no effect.This bit will always be read as zero if Timer/Counter2 is clocked by the internal CPU clock.If this bit is written when Timer/Counter2 is operating in asynchronous mode,the bit will remain one until the prescaler has been reset. $10 constant ADCSRA_ADIF \ ADC Interrupt Flag $08 constant ADCSRA_ADIE \ ADC Interrupt Enable $07 constant ADCSRA_ADPS \ ADC Prescaler Select Bits &36 constant ADC \ ADC Data Register Bytes \ JTAG &81 constant OCDR \ On-Chip Debug Related Register in I/O Memory $FF constant OCDR_OCDR \ On-Chip Debug Register Bits \ BOOT_LOAD &87 constant SPMCSR \ Store Program Memory Control Register $80 constant SPMCSR_SPMIE \ SPM Interrupt Enable $40 constant SPMCSR_RWWSB \ Read While Write Section Busy $10 constant SPMCSR_RWWSRE \ Read While Write section read enable $08 constant SPMCSR_BLBSET \ Boot Lock Bit Set $04 constant SPMCSR_PGWRT \ Page Write $02 constant SPMCSR_PGERS \ Page Erase $01 constant SPMCSR_SPMEN \ Store Program Memory Enable \ PORTA &59 constant PORTA \ Port A Data Register &58 constant DDRA \ Port A Data Direction Register &57 constant PINA \ Port A Input Pins \ PORTB &56 constant PORTB \ Port B Data Register &55 constant DDRB \ Port B Data Direction Register &54 constant PINB \ Port B Input Pins \ PORTC &53 constant PORTC \ Port C Data Register &52 constant DDRC \ Port C Data Direction Register &51 constant PINC \ Port C Input Pins \ PORTD &50 constant PORTD \ Port D Data Register &49 constant DDRD \ Port D Data Direction Register &48 constant PIND \ Port D Input Pins \ WATCHDOG &65 constant WDTCR \ Watchdog Timer Control Register $10 constant WDTCR_WDTOE \ RW $08 constant WDTCR_WDE \ Watch Dog Enable $07 constant WDTCR_WDP \ Watch Dog Timer Prescaler bits \ Interrupts &2 constant INT0Addr \ External Interrupt Request 0 &4 constant INT1Addr \ External Interrupt Request 1 &6 constant TIMER2_COMPAddr \ Timer/Counter2 Compare Match &8 constant TIMER2_OVFAddr \ Timer/Counter2 Overflow &10 constant TIMER1_CAPTAddr \ Timer/Counter1 Capture Event &12 constant TIMER1_COMPAAddr \ Timer/Counter1 Compare Match A &14 constant TIMER1_COMPBAddr \ Timer/Counter1 Compare Match B &16 constant TIMER1_OVFAddr \ Timer/Counter1 Overflow &18 constant TIMER0_OVFAddr \ Timer/Counter0 Overflow &20 constant SPI_STCAddr \ Serial Transfer Complete &22 constant USART_RXCAddr \ USART, Rx Complete &24 constant USART_UDREAddr \ USART Data Register Empty &26 constant USART_TXCAddr \ USART, Tx Complete &28 constant ADCAddr \ ADC Conversion Complete &30 constant EE_RDYAddr \ EEPROM Ready &32 constant ANA_COMPAddr \ Analog Comparator &34 constant TWIAddr \ 2-wire Serial Interface &36 constant INT2Addr \ External Interrupt Request 2 &38 constant TIMER0_COMPAddr \ Timer/Counter0 Compare Match &40 constant SPM_RDYAddr \ Store Program Memory Ready