The best replacement for spi interface is i2c.


The best alternatives to spi interface are rated as following:
★★★★★  i2c

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Speaking about spi interface, one probably shouldn't forget about eeprom.

Other search terms related to spi interface and their ratings are:

★★★★★ eeprom
★★★★ adc
You have in mind a companion for spi interface and it is not yet here? Propose!



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spi interface
i2c