beautypg.com

At90c8534 register summary – Rainbow Electronics AT90C8534 User Manual

Page 49

background image

AT90C8534

49

Note:

For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
should never be written.

AT90C8534 Register Summary

Address

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Page

$3F ($5F)

SREG

I

T

H

S

V

N

Z

C

page 17

$3E ($5E)

SPH

-

-

-

-

-

-

-

SP8

page 17

$3D ($5D)

SPL

SP7

SP6

SP5

SP4

SP3

SP2

SP1

SP0

page 17

$3C ($5C)

Reserved

$3B ($5B)

GIMSK

INT1

INT0

-

-

-

-

-

-

page 21

$3A ($5A)

GIFR

INTF1

INTF0

page 21

$39 ($59)

TIMSK

-

-

-

-

-

TOIE1

-

TOIE0

page 22

$38 ($58)

TIFR

-

-

-

-

-

TOV1

-

TOV0

page 22

$37 ($57)

Reserved

$36 ($56)

Reserved

$35 ($55)

MCUCR

-

SE

SM

-

-

ISC1

-

ISC0

page 23

$34 ($54)

Reserved

$33 ($53)

TCCR0

-

-

-

-

-

CS02

CS01

CS00

page 25

$32 ($52)

TCNT0

Timer/Counter0 (8 Bits)

page 26

$31 ($51)

Reserved

$30 ($50)

Reserved

$2F ($4F)

Reserved

$2E ($4E)

TCCR1

-

-

-

-

-

CS12

CS11

CS10

page 26

$2D ($4D)

TCNT1H

Timer/Counter1 - Counter Register High Byte

page 27

$2C ($4C)

TCNT1L

Timer/Counter1 - Counter Register Low Byte

page 27

$2B ($4B)

Reserved

$2A ($4A)

Reserved

$29 ($49)

Reserved

$28 ($48)

Reserved

$27 ($47)

Reserved

$26 ($46)

Reserved

$25 ($45)

Reserved

$24 ($44)

Reserved

$23 ($43)

Reserved

$22 ($42)

Reserved

$21 ($41)

Reserved

$20 ($40)

Reserved

$1F ($3F)

EEARH

-

-

-

-

-

-

-

EEAR8

page 28

$1E ($3E)

EEARL

EEAR7

EEAR6

EEAR5

EEAR4

EEAR3

EEAR2

EEAR1

EEAR0

page 28

$1D ($3D)

EEDR

EEPROM Data Register

page 28

$1C ($3C)

EECR

-

-

-

-

EERIE

EEMWE

EEWE

EERE

page 28

$1B ($3B)

PORTA

-

PORTA6

PORTA5

PORTA4

PORTA3

PORTA2

PORTA1

PORTA0

page 37

$1A ($3A)

DDRA

-

DDA6

DDA5

DDA4

DDA3

DDA2

DDA1

DDA0

page 37

$19 ($39)

Reserved

Reserved

$11 ($11)

Reserved

$10 ($30)

GIPR

-

-

-

-

IPIN1

IPIN0

-

-

page 21

$0F ($2F)

Reserved

$0E ($2E)

Reserved

$0D ($2D)

Reserved

$0C ($2C)

Reserved

$0B ($2B)

Reserved

$0A ($2A)

Reserved

$09 ($29)

Reserved

$08 ($28)

Reserved

$07 ($27)

ADMUX

-

-

-

-

-

MUX2

MUX1

MUX0

page 34

$06 ($26)

ADCSR

ADEN

ADSC

ADRF

ADIF

ADIE

ADPS2

ADPS1

ADPS0

page 34

$05 ($25)

ADCH

-

-

-

-

-

-

ADC9

ADC8

page 35

$04 ($24)

ADCL

ADC7

ADC6

ADC5

ADC4

ADC3

ADC2

ADC1

ADC0

page 35

$03 ($20)

Reserved

$02 ($22)

Reserved

$01 ($21)

Reserved

$00 ($20)

Reserved