ATTINY26L8SU SL383 Atmel, ATTINY26L8SU SL383 Datasheet - Page 53

• Manufacturer Part Number: ATTINY26L8SU SL383
• Description: MCU 8-Bit ATtiny AVR RISC 2KB Flash 3.3V/5V 20-Pin SOIC T/R
• Manufacturer: Atmel

Alternate Functions Of Port B
1477J–AVR–06/07
Port B has an alternate functions for the ADC, Clocking, Timer/Counters, USI, SPI pro-
gramming and pin change interrupt. The ADC is described in “Analog to Digital
Converter” on page 96, Clocking in “AVR CPU Core” on page 8, timers in
“Timer/Counters” on page 66 and USI in “Universal Serial Interface – USI” on page 82.
Pin change interrupt triggers on pins PB7 - PB0 if interrupt is enabled and it is not
masked by the alternate functions even if the pin is configured as an output. See details
from “Pin Change Interrupt” on page 64. Pin functions in programming modes are
described in “Memory Programming” on page 109. The alternate functions are shown in
Table 26.
Table 26. Port B Pins Alternate Functions
The alternate pin configuration is as follows:
• ADC10/RESET/PCINT1 – Port B, Bit 7
ADC10: ADC Input Channel 10. Configure the port pins as inputs with the internal pull-
ups switched off to avoid the digital port function from interfering with the function of the
analog to digital converter.
RESET: External Reset input is active low and enabled by unprogramming (“1”) the
RSTDISBL Fuse. Pullup is activated and output driver and digital input are deactivated
when the pin is used as the RESET pin.
Port Pin
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
Alternate Functions
ADC10 (ADC Input Channel 10)
RESET (External Reset Input)
PCINT1 (Pin Change Interrupt 1)
ADC9 (ADC Input Channel 9)
INT0 (External Interrupt 0 Input)
T0 (Timer/Counter 0 External Counter Clock Input)
PCINT1 (Pin Change Interrupt 1)
ADC8 (ADC Input Channel 8)
XTAL2 (Crystal Oscillator Output)
PCINT1 (Pin Change Interrupt 1)
ADC7 (ADC Input Channel 7)
XTAL1 (Crystal Oscillator Input)
PCINT1 (Pin Change Interrupt 1)
OC1B (Timer/Counter1 PWM Output B, Timer/Counter1Output Compare B Match
Output)
PCINT0 (Pin Change Interrupt 0)
SCK (USI Clock Input/Output)
SCL (USI External Open-collector Serial Clock)
OC1B (Inverted Timer/Counter1 PWM Output B)
PCINT0 (Pin Change Interrupt 0)
DO (USI Data Output)
OC1A (Timer/Counter1 PWM Output A, Timer/Counter1 Output Compare A Match
Output)
PCINT0 (Pin Change Interrupt 0)
DI (USI Data Input)
SDA (USI Serial Data)
OC1A (Inverted Timer/Counter1 PWM Output A)
PCINT0 (Pin Change Interrupt 0)
ATtiny26(L)
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