Atmel AVR ATtiny15L Manual page 10

I/O Memory
ATtiny15L
10
Figure 11. Single Cycle ALU Operation
System Clock Ø
Total Execution Time
Register Operands Fetch
ALU Operation Execute
Result Write Back
The I/O space definition of the ATtiny15L is shown in Table 2.
Table 2. ATtiny15L I/O Space
Address Hex Name
$3F SREG
$3B GIMSK
$3A GIFR
$39 TIMSK
$38 TIFR
$35 MCUCR
$34 MCUSR
$33 TCCR0
$32 TCNT0
$31 OSCCAL
$30 TCCR1
$2F TCNT1
$2E OCR1A
$2D OCR1B
$2C SFIOR
$21 WDTCR
$1E EEAR
$1D EEDR
$1C EECR
$18 PORTB
$17 DDRB
$16 PINB
$08 ACSR
$07 ADMUX
T1 T2
(1)
Function
Status Register
General Interrupt Mask Register
General Interrupt Flag Register
Timer/Counter Interrupt Mask Register
Timer/Counter Interrupt Flag Register
MCU Control Register
MCU Status Register
Timer/Counter0 Control Register
Timer/Counter0 (8-bit)
Oscillator Calibration Register
Timer/Counter1 Control Register
Timer/Counter1 (8-bit)
Timer/Counter1 Output Compare Register A
Timer/Counter1 Output Compare Register B
Special Function I/O Register
Watchdog Timer Control Register
EEPROM Address Register
EEPROM Data Register
EEPROM Control Register
Data Register, Port B
Data Direction Register, Port B
Input Pins, Port B
Analog Comparator Control and Status Register
ADC Multiplexer Select Register
T3 T4
1187H–AVR–09/07