ATtiny48 Atmel Corporation, ATtiny48 Datasheet - Page 78

• Manufacturer Part Number: ATtiny48
• Manufacturer: Atmel Corporation

Specifications of ATtiny48

• Flash (kbytes): 4 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 28
• Ext Interrupts: 28
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 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: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

10.4.3
10.4.4
10.4.5
10.4.6
10.4.7
10.4.8
10.4.9
10.4.10
78
ATtiny48/88
PORTA – The Port A Data Register
DDRA – The Port A Data Direction Register
PINA – The Port A Input Pins
PORTB – The Port B Data Register
DDRB – The Port B Data Direction Register
PINB – The Port B Input Pins
PORTC – The Port C Data Register
DDRC – The Port C Data Direction Register
from the MCUCR register. See
feature.
Bit
0x0E (0x2E)
Read/Write
Initial Value
Bit
0x0D (0x2D)
Read/Write
Initial Value
Bit
0x0C (0x2C)
Read/Write
Initial Value
Bit
0x05 (0x25)
Read/Write
Initial Value
Bit
0x04 (0x24)
Read/Write
Initial Value
Bit
0x03 (0x23)
Read/Write
Initial Value
Bit
0x08 (0x28)
Read/Write
Initial Value
Bit
0x07 (0x27)
Read/Write
Initial Value
PORTB7
PORTC6
PINB7
DDB7
DDC7
R/W
R/W
R/W
R/W
N/A
R
R
R
R
7
0
7
0
7
0
7
0
7
0
7
7
0
7
0
-
-
-
PORTB6
PORTC6
PINB6
DDB6
DDC6
R/W
R/W
R/W
R/W
N/A
R
R
R
R
6
0
6
0
6
0
6
0
6
0
6
6
0
6
0
-
-
-
PORTB5
PORTC5
“Configuring the Pin” on page 61
PINB5
DDB5
DDC5
R/W
R/W
R/W
R/W
N/A
R
R
R
R
5
0
5
0
5
0
5
0
5
0
5
5
0
5
0
-
-
-
PORTB4
PORTC4
PINB4
DDB4
DDC4
R/W
R/W
R/W
R/W
N/A
R
R
R
R
4
0
4
0
4
0
4
0
4
0
4
4
0
4
0
-
-
-
PORTB3
PORTA3
PORTC3
PINA3
PINB3
DDA3
DDB3
DDC3
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
PORTA2
PORTB2
PORTC2
PINA2
PINB2
DDA2
DDB2
DDC2
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
for more details about this
PORTB1
PORTA1
PORTC1
PINA1
PINB1
DDA1
DDB1
DDC1
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
PORTA0
PORTB0
PORTC0
PINA0
PINB0
DDA0
DDB0
DDC0
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
8008H–AVR–04/11
PORTB
PORTA
PORTC
DDRA
DDRB
DDRC
PINA
PINB