ATTINY261-20SU Atmel, ATTINY261-20SU Datasheet - Page 63

• Manufacturer Part Number: ATTINY261-20SU
• Description: IC MCU AVR 2K FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY261-20SU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-SOIC (7.5mm Width)
• Processor Series: ATTINY2x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: SPI, USI
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 55 C
• On-chip Adc: 10 bit, 11 Channel
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATSTK505 - ADAPTER KIT FOR 14PIN AVR MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.2.1
2588E–AVR–08/10
Alternate Functions of Port A
The Port A pins with alternate function are shown in
Table 10-3.
• Port A, Bit 7 – ADC6/AIN0/PCINT7
• Port A, Bit 6 – ADC5/AIN1/PCINT6
• ADC6: Analog to Digital Converter, Channel 6
• AIN0: Analog Comparator Input. Configure the port pin as input with the internal pull-up
• PCINT7: Pin Change Interrupt source 8.
• ADC5: Analog to Digital Converter, Channel 5.
• AIN1: Analog Comparator Input. Configure the port pin as input with the internal pull-up
• PCINT6: Pin Change Interrupt source 6.
switched off to avoid the digital port function from interfering with the function of the Analog
Comparator.
switched off to avoid the digital port function from interfering with the function of the Analog
Comparator.
Port Pin
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Port B Pins Alternate Functions
Alternate Function
ADC6:
AIN0:
PCINT7: Pin Change Interrupt 0, Source 7
ADC5:
AIN1:
PCINT6: Pin Change Interrupt 0, Source 6
ADC4:
AIN2:
PCINT5: Pin Change Interrupt 0, Source 5
ADC3:
ICP0:
PCINT4: Pin Change Interrupt 0, Source 4
AREF:
PCINT3: Pin Change Interrupt 0, Source 3
ADC2:
INT1:
USCK: USI Clock (Three Wire Mode)
SCL :
PCINT2: Pin Change Interrupt 0, Source 2
ADC1:
DO:
PCINT1:Pin Change Interrupt 0, Source 1
ADC0:
DI:
SDA:
PCINT0: Pin Change Interrupt 0, Source 0
ADC Input Channel 6
Analog Comparator Input
ADC Input Channel 5
Analog Comparator Input
ADC Input Channel 4
Analog Comparator Input
ADC Input Channel 3
Timer/Counter0 Input Capture Pin
External Analog Reference
ADC Input Channel 2
External Interrupt 1 Input
USI Clock (Two Wire Mode)
ADC Input Channel 1
USI Data Output (Three Wire Mode)
ADC Input Channel 0
USI Data Input (Three Wire Mode)
USI Data Input (Two Wire Mode)
.
Table
10-3.
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