ATTINY261-15MZ Atmel, ATTINY261-15MZ Datasheet - Page 63

• Manufacturer Part Number: ATTINY261-15MZ
• Description: MCU AVR 2K FLASH 15MHZ 32-QFN
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY261-15MZ

• Package / Case: 32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 16
• Eeprom Size: 128 x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Program Memory Size: 2KB (2K x 8)
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: USI
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

12.3.1
7753F–AVR–01/11
Alternate Functions of Port B
The Port B pins with alternate function are shown in
Table 12-3.
The alternate pin configuration is as follows:
• Port B, Bit 7 - RESET/ dW/ ADC10/ PCINT15
RESET, Reset pin: When the RSTDISBL Fuse is programmed, this pin functions as a normal I/O
pin, and the part will have to rely on Power-on Reset and Brown-out Reset as its reset sources.
When the RSTDISBL Fuse is unprogrammed, the reset circuitry is connected to the pin, and the
pin can not be used as an I/O pin.
If PB7 is used as a reset pin, DDB7, PORTB7 and PINB7 will all read 0.
dW: When the debugWIRE Enable (DWEN) Fuse is programmed and Lock bits are unpro-
grammed, the RESET port pin is configured as a wire-AND (open-drain) bi-directional I/O pin
with pull-up enabled and becomes the communication gateway between target and emulator.
ADC10: ADC input Channel 10. Note that ADC input channel 10 uses analog power.
PCINT15: Pin Change Interrupt source 15.
• Port B, Bit 6 - ADC9/ T0/ INT0/ PCINT14
ADC9: ADC input Channel 9. Note that ADC input channel 9 uses analog power.
T0: Timer/Counter0 counter source.
INT0: The PB6 pin can serve as an External Interrupt source 0.
PCINT14: Pin Change Interrupt source 14.
• Port B, Bit 5 - XTAL2/ CLKO/ ADC8/ PCINT13
XTAL2: Chip clock Oscillator pin 2. Used as clock pin for crystal Oscillator or Low-frequency
crystal Oscillator. When used as a clock pin, the pin can not be used as an I/O pin.
CLKO: The divided system clock can be output on the PB5 pin, if the CKOUT Fuse is pro-
grammed, regardless of the PORTB5 and DDB5 settings. It will also be output during reset.
OC1D Output Compare Match output: The PB5 pin can serve as an external output for the
Timer/Counter1 Compare Match D when configured as an output (DDA1 set). The OC1D pin is
also the output pin for the PWM mode timer function.
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Port B Pins Alternate Functions
Alternate Function
RESET / dW / ADC10 / PCINT15
ADC9 / T0 / INT0 / PCINT14
XTAL2 / CLKO / OC1D / ADC8 / PCINT13
XTAL1 / CLKI / OC1D / ADC7 / PCINT12
OC1B / PCINT11
SCK / USCK / SCL / OC1B /PCINT10
MISO / DO / OC1A / PCINT9
MOSI / DI / SDA / OC1A / PCINT8
ATtiny261/ATtiny461/ATtiny861
Table
12-3.
63