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PCA9629 - Fm+ I2C-bus stepper motor controller

General Description

The PCA9629 is an I2C-bus controlled low-power CMOS device that provides all the logic and control required to drive a four phase stepper motor.

PCA9629 is intended to be used with external high current drivers to drive the motor coils.

Key Features

  • Generate motor coil drive phase sequence signals with four outputs for use with external high current drivers to off-load CPU.
  • Four balanced push-pull type outputs capable of sinking 25 mA or sourcing 25 mA for glueless connection to external high current drivers needed to drive motor coils.
  • Up to 1000 pF loads with 100 ns rise and fall times.
  • Built-in oscillator requires no external components.
  • Stepper motor drive control logic.
  • One-phase (wave drive), two-phase,.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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PCA9629 Fm+ I2C-bus stepper motor controller Rev. 1 — 29 February 2012 Product data sheet 1. General description The PCA9629 is an I2C-bus controlled low-power CMOS device that provides all the logic and control required to drive a four phase stepper motor. PCA9629 is intended to be used with external high current drivers to drive the motor coils. The PCA9629 supports three stepper motor drive formats: one-phase (wave drive), two-phase, and half-step. In addition, when used as inputs, four General Purpose Input/Outputs (GPIOs) allow sensing of logic level output from optical interrupter modules and generate active LOW interrupt signal on the INT pin of PCA9629. This is a useful feature in sensing home position of motor shaft or reference for step pulses.