ATtiny48 Atmel Corporation, ATtiny48 Datasheet - Page 68

• 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

10.3.1
68
ATtiny48/88
Alternate Functions of Port A
The Port A pins with alternate functions are shown in
Table 10-3.
The alternate pin configuration is as follows:
• PCINT27 – Port A, Bit 3
PCINT27: Pin Change Interrupt source 27.
• PCINT26 – Port A, Bit 2
PCINT26: Pin Change Interrupt source 26.
• ADC7/PCINT25 – Port A, Bit 1
ADC7: PA1 can be used as ADC input Channel 7.
PCINT25: Pin Change Interrupt source 25.
• ADC6/PCINT24 – Port A, Bit 0
ADC6: PA0 can be used as ADC input Channel 6.
PCINT24: Pin Change Interrupt source 24.
Table 10-4
on page
Table 10-4.
Signal Name
PUOE
PUO
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Port Pin
PA3
PA2
PA1
PA0
66.
relate the alternate functions of Port A to the overriding signals shown in
Port A Pins Alternate Functions
Overriding Signals for Alternate Functions in PA[3:0]
PA3/PCINT27
0
0
0
0
0
0
PCINT27 •
PCIE3
1
PCINT27 INPUT
–
Alternate Function
PCINT27 (Pin Change Interrupt 27)
PCINT26 (Pin Change Interrupt 26)
ADC7 (ADC Input Channel 7)
PCINT25 (Pin Change Interrupt 25)
ADC6 (ADC Input Channel 6)
PCINT24 (Pin Change Interrupt 24)
PA2/PCINT26
0
0
0
0
0
0
PCINT26 •
PCIE3
1
PCINT26 INPUT
–
PA1/ADC7/PCINT25
0
0
0
0
0
0
PCINT25 • PCIE3 +
ADC7D
1
PCINT25 INPUT
ADC7 INPUT
Table
10-3.
PA0/ADC6/PCINT24
0
0
0
0
0
0
PCINT24 • PCIE3 +
ADC6D
1
PCINT24 INPUT
ADC6 INPUT
8008H–AVR–04/11
Figure 10-6