ATtiny261 Atmel Corporation, ATtiny261 Datasheet - Page 106

• Manufacturer Part Number: ATtiny261
• Manufacturer: Atmel Corporation

Specifications of ATtiny261

• Flash (kbytes): 2 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• Self Program Memory: YES
• 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: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

12.9
106
Timer/Counter Timing Diagrams
ATtiny261/461/861
Table 12-7.
The Timer/Counter is a synchronous design and the timer clock (clk
clock enable signal in the following figures. The figures include information on when Interrupt
Flags are set.
Figure 12-15
sequence close to the MAX value in all modes other than Phase and Frequency Correct PWM
Mode.
Figure 12-15. Timer/Counter Timing Diagram, no Prescaling
Figure 12-16
than Phase and Frequency Correct PWM Mode.
Figure 12-16. Timer/Counter Timing Diagram, with Prescaler (f
Figure 12-17
TCNTn
(clk
COM1D1
0
0
1
1
TCNTn
TOVn
(clk
TOVn
clk
clk
clk
clk
PCK
PCK
PCK
Tn
PCK
Tn
/1)
/8)
contains timing data for basic Timer/Counter operation. The figure shows the count
shows the setting of OCF1A, OCF1B and OCF1D in all modes.
shows the same timing data, but with the prescaler enabled, in all modes other
Configuration of Output Compare Pins OC1D and OC1D in PWM6 Mode
COM1D0
0
1
0
1
TOP - 1
TOP - 1
OC1D Pin (PB4)
Disconnected
OC1A •
OC1A •
OC1A •
TOP
TOP
OC1OE4
OC1OE4
OC1OE4
BOTTOM
clkT1
BOTTOM
/8)
Disconnected
OC1A •
OC1A •
OC1A •
OC1D Pin (PB5)
T1
) is therefore shown as a
OC1OE5
OC1OE5
OC1OE5
BOTTOM + 1
BOTTOM + 1
2588E–AVR–08/10