ATtiny261 Atmel Corporation, ATtiny261 Datasheet - Page 2

• 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

1. Pin Configurations
Figure 1-1.
Note:
2
To ensure mechanical stability the center pad underneath the QFN/MLF package should be soldered to ground on the board.
ATtiny261/461/861
(ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5
(ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4
Pinout ATtiny261/461/861 and ATtiny261V/461V/861V
(ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5
(ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4
(SCK/USCK/SCL/OC1B/PCINT10) PB2
(MOSI/DI/SDA/OC1A/PCINT8) PB0
(ADC10/RESET/PCINT15) PB7
(MISO/DO/OC1A/PCINT9) PB1
(OC1B/PCINT11) PB3
(ADC9/INT0/T0/PCINT14) PB6
(OC1B/PCINT11) PB3
GND
VCC
NC
NC
NC
1
2
3
4
5
6
7
8
GND
VCC
1
2
3
4
5
6
7
8
9
10
PDIP/SOIC
QFN/MLF
20
19
18
17
16
15
14
13
12
11
PA0 (ADC0/DI/SDA/PCINT0)
PA1 (ADC1/DO/PCINT1)
PA2 (ADC2/INT1/USCK/SCL/PCINT2)
PA3 (AREF/PCINT3)
AGND
AVCC
PA4 (ADC3/ICP0/PCINT4)
PA5 (ADC4/AIN2/PCINT5)
PA6 (ADC5/AIN0/PCINT6)
PA7 (ADC6/AIN1/PCINT7)
24
23
22
21
20
19
18
17
NC
PA2 (ADC2/INT1/USCK/SCL/PCINT2)
PA3 (AREF/PCINT3)
AGND
NC
NC
AVCC
PA4 (ADC3/ICP0/PCINT4)
2588ES–AVR–08/10