ATmega128A Atmel Corporation, ATmega128A Datasheet - Page 87

• 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

12.4.2
12.4.3
12.4.4
12.4.5
12.4.6
12.4.7
12.4.8
12.4.9
8151H–AVR–02/11
PORTA - Port A Data Register
DDRA - Port A Data Direction Register
PINA - Port A Input Pins Address
PORTB - Port B Data Register
DDRB - Port B Data Direction Register
PINB - Port B Input Pins Address
PORTC - Port C Data Register
DDRC - Port C Data Direction Register
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
Bit
Read/Write
Initial Value
7
PINA7
R
N/A
PORTB7
PORTA7
PORTC7
PINB7
DDC7
DDA7
DDB7
R/W
R/W
R/W
R/W
R/W
R/W
N/A
R
7
0
7
0
7
0
7
7
0
7
0
7
0
PORTB6
PORTA6
PORTC6
PINA6
PINB6
DDC6
DDA6
DDB6
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
6
0
6
0
6
6
0
6
6
0
6
0
6
0
PORTB5
PORTA5
PORTC5
PINA5
PINB5
DDC5
DDA5
DDB5
R/W
R/W
R/W
R/W
R/W
N/A
R/W
N/A
R
5
0
R
5
0
5
5
0
5
0
5
5
0
5
0
PORTB4
PORTA4
PORTC4
PINB4
PINA4
DDC4
DDA4
DDB4
R/W
R/W
R/W
R/W
R/W
N/A
R/W
N/A
R
4
0
4
0
R
4
0
4
4
0
4
4
0
4
0
PORTB3
PORTA3
PORTC3
PINB3
DDC3
PINA3
DDA3
DDB3
R/W
R/W
R/W
R/W
R/W
N/A
R/W
N/A
R
3
0
3
0
R
3
0
3
3
0
3
3
0
3
0
PORTB2
PORTA2
PORTC2
PINB2
DDC2
PINA2
DDA2
DDB2
R/W
R/W
R/W
R/W
R/W
N/A
R/W
N/A
R
2
0
2
0
R
2
0
2
2
0
2
2
0
2
0
PORTA1
PORTB1
PORTC1
PINB1
DDC1
ATmega128A
PINA1
DDA1
DDB1
R/W
R/W
R/W
R/W
N/A
N/A
R/W
R/W
R
1
0
1
0
R
1
0
1
1
0
1
1
0
1
0
PORTA0
PORTB0
PORTC0
PINB0
DDC0
PINA0
DDA0
DDB0
R/W
R/W
R/W
R/W
N/A
N/A
R/W
R/W
R
0
0
0
0
R
0
0
0
0
0
0
0
0
0
0
PORTA
PORTB
DDRC
PORTC
DDRA
DDRB
PINB
PINA
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