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Home » NEWEST Products » New by Manufacturer » NXP Semiconductors » NXP PCA9629 Fm+ I2C-Bus Stepper Motor Controller
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NXP PCA9629 Fm+ I2C-Bus Stepper Motor Controller

NXP PCA9629 Fm+ I2C-Bus Stepper Motor Controller

NXP's PCA9629 Fm+ I2C-Bus Stepper Motor Controller 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. Three stepper motor drive formats are supported: 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. Upon interrupt, the PCA9629 can be programmed to automatically stop the motor or reverse the direction of rotation of motor.

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, and half-step drive format logic level outputs
  • Programmable step rate: 344.8 kpps to 0.3 pps with ±5 % accuracy
  • Programmable ramp-up on start and ramp-down to stop
  • Programmable steps and rotation control
  • Sensor enabled drive control: linked to interrupt from I/O pins
  • Direction control of motor shaft
  • Selectable active hold, power off or released states for motor shaft
  • Four general purpose I/Os:
  • Configured to sense logic level outputs from optical interrupter photo transistor circuit
  • Configured as outputs to drive (source/sink) LEDs or other loads up to 25 mA
  • Programmable interrupt Mask Control for input pins

  • 1 MHz Fast-mode Plus (Fm+) I2C-bus serial interface with 30 mA high drive capability on SDA output for driving high capacitive buses
  • Compliant with I2C-bus Standard-mode (100 kHz) and Fast-mode (400 kHz) speeds
  • Active LOW open-drain interrupt output
  • Active LOW reset (RESET) input pin resets device to power-up default state: can be used to recover from bus stuck condition
  • Programmable watchdog timer
  • All Call address allows programming of more than one device at the same time with the same parameters
  • 16 programmable slave addresses using two address pins
  • -40° C to +85° C operation
  • ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22C101
  • Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

Applications
  • Amusement machines
  • Gaming and slot machines
  • Consumer home appliances or toys
  • Industrial automation
  • HVAC and building climate control systems
  • Robotics
Part NumberPackageSupply VoltageSupply Current Standby Current
PCA9629PW,118 TSSOP-16 4.5 to 5.5V 10mA Max 2mA Max

Description
OM13285,598 Demonstration board for PCA9629 Stepper Motor
Block Diagram
Block Diagram
  • NXP Semiconductors
  • Power Management
  • Semiconductors|Integrated Circuits|IC-Power Management