ATmega48 Automotive Atmel Corporation, ATmega48 Automotive Datasheet - Page 80

• Manufacturer Part Number: ATmega48 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega48 Automotive

• Flash (kbytes): 4 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• 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): 0.5
• Eeprom (bytes): 256
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

10.4
10.4.1
10.4.2
10.4.3
10.4.4
10.4.5
10.4.6
10.4.7
10.4.8
80
Register Description for I/O Ports
ATmega48/88/168 Automotive
The Port B Data Register – PORTB
The Port B Data Direction Register – DDRB
The Port B Input Pins Address – PINB
The Port C Data Register – PORTC
The Port C Data Direction Register – DDRC
The Port C Input Pins Address – PINC
The Port D Data Register – PORTD
The Port D Data Direction Register – DDRD
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
PORTB7
PORTD7
PINB7
DDB7
DDD7
R/W
R/W
R/W
R/W
N/A
R
R
R
R
7
0
7
0
7
7
–
0
7
–
0
7
–
0
7
0
7
0
PORTB6
PORTC6
PORTD6
PINB6
PINC6
DDB6
DDC6
DDD6
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
0
6
6
0
6
0
PORTB5
PORTC5
PORTD5
PINB5
PINC5
DDB5
DDC5
DDD5
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
5
0
5
0
5
5
0
5
0
5
5
0
5
0
PORTB4
PORTC4
PORTD4
PINB4
PINC4
DDB4
DDC4
DDD4
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
4
0
4
0
4
4
0
4
0
4
4
0
4
0
PORTB3
PORTC3
PORTD3
PINB3
PINC3
DDB3
DDC3
DDD3
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
3
0
3
0
3
3
0
3
0
3
3
0
3
0
PORTB2
PORTC2
PORTD2
PINB2
PINC2
DDB2
DDC2
DDD2
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
2
0
2
0
2
2
0
2
0
2
2
0
2
0
PORTB1
PORTD1
PORTC1
PINB1
PINC1
DDB1
DDC1
DDD1
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
1
0
1
0
1
1
0
1
0
1
1
0
1
0
PORTB0
PORTC0
PORTD0
PINB0
PINC0
DDB0
DDC0
DDD0
R/W
R/W
R/W
R/W
R/W
R/W
N/A
N/A
R
R
0
0
0
0
0
0
0
0
0
0
0
0
0
0
7530I–AVR–02/10
PORTB
PORTC
PORTD
DDRB
DDRC
DDRD
PINB
PINC