At90c8534 register summary – Rainbow Electronics AT90C8534 User Manual
Page 49

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
$3E ($5E)
SPH
-
-
-
-
-
-
-
SP8
$3D ($5D)
SPL
SP7
SP6
SP5
SP4
SP3
SP2
SP1
SP0
$3C ($5C)
Reserved
$3B ($5B)
GIMSK
INT1
INT0
-
-
-
-
-
-
$3A ($5A)
GIFR
INTF1
INTF0
$39 ($59)
TIMSK
-
-
-
-
-
TOIE1
-
TOIE0
$38 ($58)
TIFR
-
-
-
-
-
TOV1
-
TOV0
$37 ($57)
Reserved
$36 ($56)
Reserved
$35 ($55)
MCUCR
-
SE
SM
-
-
ISC1
-
ISC0
$34 ($54)
Reserved
$33 ($53)
TCCR0
-
-
-
-
-
CS02
CS01
CS00
$32 ($52)
TCNT0
Timer/Counter0 (8 Bits)
$31 ($51)
Reserved
$30 ($50)
Reserved
$2F ($4F)
Reserved
$2E ($4E)
TCCR1
-
-
-
-
-
CS12
CS11
CS10
$2D ($4D)
TCNT1H
Timer/Counter1 - Counter Register High Byte
$2C ($4C)
TCNT1L
Timer/Counter1 - Counter Register Low Byte
$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
$1E ($3E)
EEARL
EEAR7
EEAR6
EEAR5
EEAR4
EEAR3
EEAR2
EEAR1
EEAR0
$1D ($3D)
EEDR
EEPROM Data Register
$1C ($3C)
EECR
-
-
-
-
EERIE
EEMWE
EEWE
EERE
$1B ($3B)
PORTA
-
PORTA6
PORTA5
PORTA4
PORTA3
PORTA2
PORTA1
PORTA0
$1A ($3A)
DDRA
-
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
$19 ($39)
Reserved
…
Reserved
$11 ($11)
Reserved
$10 ($30)
GIPR
-
-
-
-
IPIN1
IPIN0
-
-
$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
$06 ($26)
ADCSR
ADEN
ADSC
ADRF
ADIF
ADIE
ADPS2
ADPS1
ADPS0
$05 ($25)
ADCH
-
-
-
-
-
-
ADC9
ADC8
$04 ($24)
ADCL
ADC7
ADC6
ADC5
ADC4
ADC3
ADC2
ADC1
ADC0
$03 ($20)
Reserved
$02 ($22)
Reserved
$01 ($21)
Reserved
$00 ($20)
Reserved