ATtiny40 Atmel Corporation, ATtiny40 Datasheet - Page 2

• 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

1. Pin Configurations
1.1
1.1.1
1.1.2
1.1.3
2
Pin Description
ATtiny40
VCC
GND
RESET
Figure 1-1.
Supply voltage.
Ground.
Reset input. A low level on this pin for longer than the minimum pulse length will generate a
reset, even if the clock is not running and provided the reset pin has not been disabled. The min-
imum pulse length is given in
generate a reset.
The reset pin can also be used as a (weak) I/O pin.
Pinout of ATtiny40
(PCINT5/ADC5/OC0B) PA5
(PCINT2/ADC2/AIN1) PA2
(PCINT4/ADC4/T0) PA4
(PCINT5/ADC5/OC0B) PA5
(PCINT2/ADC2/AIN1) PA2
(PCINT1/ADC1/AIN0) PA1
(PCINT6/ADC6) PA6
(PCINT3/ADC3) PA3
(PCINT4/ADC4/T0) PA4
NOTE: Bottom pad should be soldered to ground.
(PCINT8/ADC8) PB0
(PCINT7/ADC7) PA7
(PCINT6/ADC6) PA6
(PCINT3/ADC3) PA3
(PCINT0/ADC0) PA0
Table 21-4 on page
GND
1
2
3
4
5
SOIC/TSSOP
MLF/VQFN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
15
14
13
12
11
PB1 (ADC9/PCINT9)
PB2 (ADC10/PCINT10)
PB3 (ADC11/PCINT11)
PC0 (OC0A/SS/PCINT12)
PC1 (SCK/SCL/ICP1/T1/PCINT13)
PC2 (INT0/CLKO/MISO/PCINT14)
PC3 (RESET/PCINT15)
PC4 (MOSI/SDA/TPIDATA/PCINT16)
PC5 (CLKI/TPICLK/PCINT17)
VCC
168. Shorter pulses are not guaranteed to
PC0 (OC0A/SS/PCINT12)
PC1 (SCK/SCL/ICP1/T1/PCINT13)
PC2 (INT0/CLKO/MISO/PCINT14)
PC3 (RESET/PCINT15)
PC4 (MOSI/SDA/TPIDATA/PCINT16)
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