ATtiny261 Atmel Corporation, ATtiny261 Datasheet - Page 98

• 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

98
ATtiny261/461/861
Figure 12-10. Compare Match Output Unit, Schematic
The general I/O port function is overridden by the Output Compare (OC1x / OC1x) from the
Dead Time Generator if either of the COM1x1:0 bits are set. However, the OC1x pin direction
(input or output) is still controlled by the Data Direction Register (DDR) for the port pin. The Data
Direction Register bit for the OC1x and OC1x pins (DDR_OC1x and DDR_OC1x) must be set as
output before the OC1x and OC1x values are visible on the pin. The port override function is
independent of the Output Compare mode.
clk I/O
PORTB0
DDRB0
PORTB1
DDRB1
PORTB2
DDRB2
PORTB3
DDRB3
PORTB4
DDRB4
PORTB5
DDRB5
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
D Q
OCW1A
clk Tn
OCW1B
OCW1D
clk Tn
clk Tn
Generator A
Generator B
Generator D
Dead Time
Dead Time
Dead Time
WGM11
OC1OE1:0
COM1A1:0
WGM11
OC1OE3:2
COM1B1:0
WGM11
OC1OE5:4
COM1D1:0
Q
Q
Q
Q
Q
Q
OC1B
OC1B
OC1A
OC1A
OC1D
OC1D
0
1
Output Compare
Pin Configuration
2
1
0
2
1
0
Output Compare
Pin Configuration
Output Compare
Pin Configuration
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2588E–AVR–08/10
OC1A
OC1A
OC1B
OC1B
OC1D
OC1D
PIN
PIN
PIN
PIN
PIN
PIN