ATmega128A Atmel Corporation, ATmega128A Datasheet - Page 9

• Manufacturer Part Number: ATmega128A
• Manufacturer: Atmel Corporation

Specifications of ATmega128A

• Flash (kbytes): 128 Kbytes
• Pin Count: 64
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 53
• Ext Interrupts: 8
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 4
• Output Compare Channels: 8
• Input Capture Channels: 2
• Pwm Channels: 7
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

5. Register Summary
8151HS–AVR–02/11
Address
($FF)
($9E)
($9D)
($9C)
($9B)
($9A)
($8E)
($8D)
($8C)
($8B)
($7E)
($7D)
($7B)
($7A)
($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)
($71)
($70)
($6F)
($69)
($68)
($67)
($66)
($65)
($64)
($63)
($8A)
($88)
($87)
($7C)
:
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
SPMCSR
Reserved
Reserved
UCSR1C
UCSR1A
UCSR1B
UBRR1H
UCSR0C
UBRR0H
TCCR3C
OCR3AH
OCR3BH
OCR3CH
OCR3CL
TCCR1C
OCR1CH
OCR1CL
OSCCAL
UBRR1L
TCCR3A
TCCR3B
TCNT3H
OCR3AL
OCR3BL
TCNT3L
ETIMSK
XMCRA
XMCRB
PORTG
Name
EICRA
ICR3H
ETIFR
TWCR
TWDR
TWAR
TWSR
TWBR
DDRG
UDR1
ICR3L
PING
COM3A1
RXCIE1
FOC3A
FOC1A
TWINT
SPMIE
ICNC3
RXC1
TWA6
TWS7
XMBK
ISC31
Bit 7
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
COM3A0
UMSEL1
UMSEL0
RWWSB
TXCIE1
FOC3B
FOC1B
ICES3
TWEA
TWA5
TWS6
ISC30
Bit 6
TXC1
SRL2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
COM3B1
UDRIE1
TWSTA
UPM11
UDRE1
UPM01
FOC3C
FOC1C
TICIE3
TWA4
TWS5
ISC21
Bit 5
SRL1
ICF3
Timer/Counter3 – Output Compare Register A High Byte
Timer/Counter3 – Output Compare Register B High Byte
Timer/Counter3 – Output Compare Register C High Byte
Timer/Counter1 – Output Compare Register C High Byte
Timer/Counter3 – Output Compare Register A Low Byte
Timer/Counter3 – Output Compare Register B Low Byte
Timer/Counter3 – Output Compare Register C Low Byte
Timer/Counter1 – Output Compare Register C Low Byte
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Timer/Counter3 – Input Capture Register High Byte
Timer/Counter3 – Input Capture Register Low Byte
Timer/Counter3 – Counter Register High Byte
Timer/Counter3 – Counter Register Low Byte
Two-wire Serial Interface Bit Rate Register
Two-wire Serial Interface Data Register
USART1 Baud Rate Register Low
Oscillator Calibration Register
RWWSRE
COM3B0
PORTG4
WGM33
OCIE3A
TWSTO
USART1 I/O Data Register
UPM10
RXEN1
UPM00
OCF3A
PING4
TWA3
TWS4
ISC20
DDG4
Bit 4
SRL0
FE1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
COM3C1
PORTG3
BLBSET
WGM32
OCIE3B
SRW01
USBS1
TXEN1
USBS0
OCF3B
TWWC
PING3
DOR1
TWA2
TWS3
ISC11
DDG3
Bit 3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
USART1 Baud Rate Register High
USART0 Baud Rate Register High
COM3C0
PORTG2
UCSZ11
UCSZ12
UCSZ01
PGWRT
SRW00
TWEN
PING2
TOIE3
TWA1
XMM2
ISC10
DDG2
UPE1
TOV3
Bit 2
CS32
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
PORTG1
UCSZ10
UCSZ00
WGM31
OCIE3C
TWPS1
SRW11
PGERS
OCF3C
RXB81
XMM1
PING1
TWA0
ISC01
DDG1
Bit 1
U2X1
CS31
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ATmega128A
PORTG0
UCPOL1
UCPOL0
WGM30
OCIE1C
TWGCE
MPCM1
TWPS0
SPMEN
OCF1C
TXB81
XMM0
PING0
ISC00
DDG0
Bit 0
CS30
TWIE
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Page
195
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197
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138
134
137
139
139
140
140
140
140
140
140
141
141
142
143
138
140
140
226
228
229
228
226
289
44
34
35
90
89
89
89
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