ATtiny40 Atmel Corporation, ATtiny40 Datasheet - Page 64

• Manufacturer Part Number: ATtiny40
• Manufacturer: Atmel Corporation

Specifications of ATtiny40

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 12 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 18
• Ext Interrupts: 18
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 12
• 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
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• 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

10.4.9
10.4.10
10.4.11
10.4.12
10.4.13
64
ATtiny40
PINB – Port B Input Pins
PUEC – Port C Pull-up Enable Control Register
PORTC – Port C Data Register
DDRC – Port C Data Direction Register
PINC – Port C Input Pins
Bit
0x04
Read/Write
Initial Value
Bit
0x1E
Read/Write
Initial Value
Bit
0x1D
Read/Write
Initial Value
Bit
0x1C
Read/Write
Initial Value
Bit
0x1B
Read/Write
Initial Value
R
R
R
R
R
7
–
0
7
–
0
7
–
0
7
–
0
7
–
0
R
R
6
–
0
R
R
R
6
–
0
6
–
0
6
–
0
6
–
0
PORTC5
PUEC5
PINC5
PINC5
R/W
R/W
R/W
R/W
R
5
–
0
5
0
5
0
5
0
5
0
PORTC4
PUEC4
PINC4
PINC4
R/W
R/W
R/W
R/W
R
4
–
0
4
0
4
0
4
0
4
0
PORTC3
PUEC3
PINB3
PINC3
DDC3
R/W
R/W
R/W
R/W
N/A
R/W
N/A
3
3
0
3
0
3
3
0
PORTC2
PUEC2
PINB2
PINC2
DDC2
R/W
R/W
R/W
R/W
R/W
N/A
N/A
2
2
2
0
2
0
2
0
PORTC1
PUEC1
PINB1
PINC1
DDC1
R/W
R/W
R/W
R/W
N/A
R/W
N/A
1
1
1
0
1
0
1
0
PORTC0
PUEC0
PINB0
PINC0
DDC0
R/W
R/W
N/A
R/W
R/W
N/A
R/W
0
0
0
0
0
0
0
0
8263A–AVR–08/10
PORTC
DDRC
PUEC
PINB
PINC