Special input/output (Special I/O or SIO) are inputs and/or outputs of a microcontroller designated to perform specialized functions or have specialized features.
Specialized functions can include:
- Hardware interrupts,
- analog input or output
- PWM output
- Serial communication, such as UART, USART,[1][2] SPI bus, or SerDes.
- External reset
- Switch debounce
- Input pull-up (or -down) resistors
- open collector output
- Pulse counting[3]
- Timing pulses[4][5]
Some kinds of special I/O functions can sometimes be emulated with general-purpose input/output and bit banging software.
See also
editReferences
edit- ^ Dogan Ibrahim (2011). Advanced PIC Microcontroller Projects in C. Elsevier Science. p. 357. ISBN 9780080558424.
- ^ Adetoyi, O.E. (2017). "Development of Smart Card Door Access Control System". International Journal of Electronics Communication and Computer Engineering. 8 (1): 41–44.
- ^ Thomas Bräunl (2013). Embedded Robotics; Mobile Robot Design and Applications with Embedded Systems. Springer Berlin Heidelberg. p. 61. ISBN 9783662050996.
- ^ Steven F. Barrett (2013). Arduino Microcontroller Processing for Everyone!. Morgan & Claypool Publishers. p. 265. ISBN 9781627052542.
- ^ Shepetov, A.; Chubenko, A.; Kryakunova, O.; Nikolayevsky, N.; Salikhov, N.; Yanke, V. (2017). "The STM32 microcontroller based pulse intensity registration system for the neutron monitor" (PDF). EPJ Web of Conferences. 145. EDP Sciences.
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