CPU
CPUCPU Registers
ATtiny20 peripherals
Each block of the ATtiny20: what it is, the registers that control it and the pins it uses.
PORTA
PORTI/O Port
Registers
PORTB
PORTI/O Port
Registers
EXINT
EXINTExternal Interrupts
Registers
Pins
TC0
TC8Timer/Counter, 8-bit
Registers
Pins
TC1
TC16Timer/Counter, 16-bit
Registers
Pins
SPI
SPISerial Peripheral Interface
Registers
Pins
TWI
TWITwo Wire Serial Interface
Registers
Pins
ADC
ADCAnalog-to-Digital Converter
Registers
Pins
AC
ACAnalog Comparator
Registers
Pins
WDT
WDTWatchdog Timer