ATtiny40 Atmel Corporation, ATtiny40 Datasheet - Page 75
ATtiny40
Manufacturer Part Number
ATtiny40
Description
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
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8263A–AVR–08/10
Figure 11-8. Timer/Counter Timing Diagram, no Prescaling
Figure 11-9 on page 75
Figure 11-9. Timer/Counter Timing Diagram, with Prescaler (f
Figure 11-10 on page 75
except CTC mode and PWM mode, where OCR0A is TOP.
Figure 11-10. Timer/Counter Timing Diagram, Setting of OCF0x, with Prescaler (f
Figure 11-11 on page 76
and fast PWM mode where OCR0A is TOP.
TCNTn
(clk
TCNTn
(clk
TCNTn
(clk
TOVn
TOVn
OCRnx
OCFnx
clk
clk
clk
clk
clk
clk
I/O
I/O
I/O
I/O
Tn
I/O
Tn
I/O
Tn
/1)
/8)
/8)
OCRnx - 1
MAX - 1
MAX - 1
shows the same timing data, but with the prescaler enabled.
shows the setting of OCF0A and the clearing of TCNT0 in CTC mode
shows the setting of OCF0B in all modes and OCF0A in all modes
OCRnx
MAX
MAX
OCRnx Value
clk_I/O
OCRnx + 1
BOTTOM
BOTTOM
/8)
BOTTOM + 1
BOTTOM + 1
clk_I/O
OCRnx + 2
/8)
75
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