ATtiny261 Atmel Corporation, ATtiny261 Datasheet - Page 79

• 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

11.7.4
11.7.5
11.8
2588E–AVR–08/10
Timer/Counter Timing Diagrams
8-bit Input Capture Mode
16-bit Input Capture Mode
cases to consider in the Normal mode, a new counter value can be written anytime. The Output
Compare Unit can be used to generate interrupts at some given time.
The Timer/Counter0 can also be used in an 8-bit Input Capture mode, see
77
The Timer/Counter0 can also be used in a 16-bit Input Capture mode, see
77
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.
shows the count sequence close to the MAX value.
Figure 11-7. Timer/Counter Timing Diagram, no Prescaling
Figure 11-8
Figure 11-8. Timer/Counter Timing Diagram, with Prescaler (f
Figure 11-9 on page 80
TCNTn
(clk
TCNTn
(clk
TOVn
TOVn
clk
clk
clk
clk
for bit settings. For full description, see the section
for bit settings. For full description, see the section
I/O
I/O
I/O
Tn
I/O
Tn
/1)
/8)
shows the same timing data, but with the prescaler enabled.
Figure 11-7
MAX - 1
MAX - 1
shows the setting of OCF0A and OCF0B in Normal mode.
contains timing data for basic Timer/Counter operation. The figure
MAX
MAX
“Input Capture Unit” on page
“Input Capture Unit” on page
clk_I/O
BOTTOM
BOTTOM
/8)
T0
) is therefore shown as a
Table 11-3 on page
Table 11-3 on page
BOTTOM + 1
BOTTOM + 1
75.
75.
79