AN4290 Datasheet, PDF (1/16 Pages) STMicroelectronics – This document describes how the SPI communication

AN4290
Application note
L647x, L648x and powerSTEP01 family communication protocol
Enrico Poli
Introduction
The L6470, L6472, L6474, L648x and powerSTEP01 devices provide advanced features
and high programmability. The devices are controlled by a host microcontroller through
a fast SPI interface compliant with the daisy chain configuration.
This document describes how the SPI communication protocol is implemented and it gives
some suggestions about the application design.
The features of the different parts and the current control algorithms (voltage mode driving,
predictive current control and auto-adjusted decay) are not investigated in this document.
Please refer to the respective application notes.
March 2015
DocID024501 Rev 2
1/16
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