Rainbow Electronics ATtiny28L - Manual (Page 68)

68
ATtiny28L/V
1062E–10/01
Notes: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
should never be written.
2. Some of the status flags are cleared by writing a logical “1” to them. Note that the CBI and SBI instructions will operate on all
bits in the I/O register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions work
with registers $00 to $1F only.
Register Summary
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page
$3F SREG I T H S V N Z C page 11
$3E Reserved
... Reserved
$20 Reserved
$1F Reserved
$1E Reserved
$1D Reserved
$1C Reserved
$1B PORTA - - - - PORTA3 PORTA2 PORTA1 PORTA0 page 36
$1A PACR - - - - DDA3 PA2HC DDA1 DDA0 page 36
$19 PINA - - - - PINA3 - PINA1 PINA0 page 37
$18 Reserved
$17 Reserved
$16 PINB PINB7 PINB6 PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 page 39
$15 Reserved
$14 Reserved
$13 Reserved
$12 PORTD PORTD7 PORTD6 PORTD5 PORTD4 PORTD3 PORTD2 PORTD1 PORTD0 page 42
$11 DDRD DDD7 DDD6 DDD5 DDD4 DDD3 DDD2 DDD1 DDD0 page 42
$10 PIND PIND7 PIND6 PIND5 PIND4 PIND3 PIND2 PIND1 PIND0 page 42
$0F Reserved
$0E Reserved
$0D Reserved
$0C Reserved
$0B Reserved
$0A Reserved
$09 Reserved
$08 ACSR ACD - ACO ACI ACIE - ACIS1 ACIS0 page 34
$07 MCUCS PLUPB - SE SM WDRF - EXTRF PORF page 17
$06 ICR INT1 INT0 LLIE TOIE0 ISC11 ISC10 ISC01 ISC00 page 19
$05 IFR INTF1 INTF0 - TOV0 - - - - page 20
$04 TCCR0 FOV0 - - OOM01 OOM00 CS02 CS01 CS00 page 24
$03 TCNT0 Timer/Counter0 (8-bit) page 25
$02 MODCR ONTIM4 ONTIM3 ONTIM2
ONTIM1
ONTIM0 MCONF2 MCONF1 MCONF0 page 29
$01 WDTCR - - - WDTOE WDE WDP2 WDP1 WDP0 page 26
$00 OSCCAL Oscillator Calibration Register page 28