ATMEGA128-8AI ATMEL Corporation, ATMEGA128-8AI Datasheet - Page 8

• Manufacturer Part Number: ATMEGA128-8AI
• Description: 8-bit Microcontroller with 128K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

Register Summary
8
Address
($FF)
($9E)
($9D)
($9C)
($9B)
($9A)
($8E)
($8D)
($8C)
($8B)
($7E)
($7D)
($7B)
($7A)
($671
($6E)
($6D)
($6C)
($6B)
($6A)
($99)
($98)
($97)
($96)
($95)
($94)
($93)
($92)
($91)
($90)
($8F)
($89)
($86)
($85)
($84)
($83)
($82)
($81)
($80)
($7F)
($79)
($78)
($77)
($76)
($75)
($74)
($73)
($72)
($70)
($6F)
($69)
($68)
($67)
($66)
($65)
($64)
($63)
($62)
($8A)
($88)
($87)
($7C)
..
ATmega128(L)
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
OCR3AH
OCR3BH
OCR3CH
Reserved
Reserved
Reserved
OCR1CH
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SPMCSR
Reserved
Reserved
UCSR1C
UCSR1A
UCSR1B
UBRR1L
UBRR1H
UCSR0C
UBRR0H
TCCR3C
TCCR3A
TCCR3B
TCNT3H
OCR3AL
OCR3BL
OCR3CL
TCCR1C
OCR1CL
OSCCAL
TCNT3L
Name
ETIMSK
XMCRA
XMCRB
PORTG
PORTF
ICR3H
TWCR
TWDR
TWAR
TWSR
TWBR
EICRA
DDRG
UDR1
ICR3L
ETIFR
PING
USART1 Baud Rate Register Low
Timer/Counter3 - Counter Register High Byte
Timer/Counter3 - Counter Register Low Byte
Timer/Counter3 - Output Compare Register A High Byte
Timer/Counter3 - Output Compare Register A Low Byte
Timer/Counter3 - Output Compare Register B High Byte
Timer/Counter3 - Output Compare Register B Low Byte
Timer/Counter3 - Output Compare Register C High Byte
Timer/Counter3 - Output Compare Register C Low Byte
Timer/Counter3 - Input Capture Register High Byte
Timer/Counter3 - Input Capture Register Low Byte
Timer/Counter1 - Output Compare Register C High Byte
Timer/Counter1 - Output Compare Register C Low Byte
2-wire Serial Interface Bit Rate Register
USART1 I/O Data Register
Oscillator Calibration Register
2-wire Serial Interface Data Register
COM3A1
PORTF7
RXCIE1
FOC3A
FOC1A
ICNC3
TWINT
SPMIE
Bit 7
XMBK
ISC31
RXC1
TWA6
TWS7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COM3A0
UMSEL1
UMSEL0
RWWSB
PORTF6
TXCIE1
FOC3B
FOC1B
Bit 6
ICES3
TWEA
TWA5
TWS6
ISC30
TXC1
SRL2
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COM3B1
PORTF5
UDRIE1
UPM11
UDRE1
UPM01
FOC3C
FOC1C
TWSTA
TICIE3
Bit 5
TWA4
TWS5
ISC21
SRL1
ICF3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RWWSRE
COM3B0
PORTG4
PORTF4
WGM33
OCIE3A
TWSTO
RXEN1
OCF3A
UPM10
UPM00
PING4
Bit 4
TWA3
TWS4
ISC20
DDG4
SRL0
FE1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
USART1 Baud Rate Register High
USART0 Baud Rate Register High
COM3C1
PORTG3
BLBSET
PORTF3
WGM32
OCIE3B
SRW01
USBS1
TXEN1
USBS0
OCF3B
TWWC
PING3
Bit 3
DOR1
TWA2
TWS3
ISC11
DDG3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
COM3C0
PORTG2
UCSZ12
PORTF2
UCSZ11
UCSZ01
PGWRT
SRW00
Bit 2
TOIE3
TWEN
XMM2
PING2
TWA1
ISC10
DDG2
UPE1
CS32
TOV3
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTG1
UCSZ10
UCSZ00
OCIE3C
PORTF1
WGM31
OCF3C
TWPS1
SRW11
PGERS
RXB81
PING1
Bit 1
TWA0
XMM1
ISC01
DDG1
U2X1
CS31
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PORTG0
UCPOL1
UCPOL0
PORTF0
WGM30
OCIE1C
TWGCE
MPCM1
SPMEN
OCF1C
TWPS0
TXB81
XMM0
PING0
Bit 0
ISC00
DDG0
CS30
TWIE
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2467AS–08/01
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