To use the SPI protocol four pins are required. In this microcontroller the interrupt pins are:ĪTtiny88 has a fully operated SPI communication system that can be used to communicate multiple sensors and multiple measuring modules to works smartly. In two interrupt systems whenever both interrupts will be trigger at the same time then only one which executed later will be work. When there is only one interrupt then it is easy to understand it but ATtiny88 comes with two interrupts in the same microcontroller. ALL input and output pins on ATtiny88 are:Īn interrupt is function is used to get the attention CPU. All these ports also come with an internal pull-up resistor, they also have sink and source ability. Port A only exists in some packages Most of the pins can be used for output/input functions. The oscillator/ Clock pins are:ĪTtiny88 has three GPIO ports which are 8-bit. In the case of using the external clock, the oscillator pins can be used which can be used to extend the oscillator up to 12MHz. The microcontroller can use the internal oscillator which is 8MHz and can be variate at a different level through programming. The ground pins are internally connected and can be used for common ground by any device or the power supply that is being used with the microcontroller.
The number of power pins in ATtiny88 is three, from which one is used for power input and the remaining two can be used as a ground pin. Pin Configuration Details of all Pins POWER SUPPLY PINS
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