Serial Peripheral Interface Bus

The Consecutive Peripheral Interface Bus or SPI (pronounced like "S.P.I." or "spy") bus is a ancillary consecutive abstracts hotlink accepted alleged by Motorola that operates in abounding bifold mode. Accessories acquaint in master/slave approach area the adept accessory initiates the abstracts frame. Multiple bondservant accessories are accustomed with alone bondservant baddest (chip select) lines. Sometimes SPI is alleged a "four-wire" consecutive bus, allegory with three-, two-, and one-wire consecutive buses.