Overview
The PCA9629APWJ, produced by NXP USA Inc., is an I²C-bus controlled low-power CMOS device designed to provide comprehensive logic and control for driving four-phase stepper motors. This advanced stepper motor controller is integrated with various features that enhance its functionality and flexibility in motor control applications.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | TSSOP16 |
| Supply Voltage | 2.3 V to 5.5 V |
| Operating Temperature | -40°C to 85°C |
| Stepper Motor Drive Formats | One-phase (wave drive), two-phase, and half-step |
| Programmable Step Rate | 333.3 kpps to 0.3 pps with ±3% accuracy |
| Oscillator Frequency | 1 MHz (built-in, no external components required) |
| GPIOs | Four General Purpose Input/Outputs (GPIOs) |
| Interrupt Capability | Active LOW interrupt signal on the INT pin |
Key Features
- Built-in 1 MHz oscillator requiring no external components
- Stepper motor drive control logic supporting one-phase, two-phase, and half-step drive formats
- Programmable step rate from 333.3 kpps to 0.3 pps with ±3% accuracy
- Programmable ramp-up on start and ramp-down to stop
- Programmable re-enable ramp-up or ramp-down to change ramp rate curve on the fly
- Programmable re-start motor with new speed and operation while motor is still running
- Programmable motor action either multiple times (1 to 255) or continuously
- Programmable loop delay timer for motor reversal mode
- Four General Purpose Input/Outputs (GPIOs) for sensing logic level outputs from optical interrupter modules
- Active LOW interrupt signal on the INT pin for sensing home position of motor shaft or reference for step pulses
Applications
The PCA9629APWJ is suitable for a variety of applications that require precise and flexible stepper motor control, including:
- Industrial automation systems
- Medical devices requiring precise motor control
- Consumer electronics with motorized components
- Automotive systems needing stepper motor control
- Robotics and mechatronics projects
Q & A
- What is the primary function of the PCA9629APWJ?
The PCA9629APWJ is an I²C-bus controlled low-power CMOS device designed to provide all the logic and control required to drive a four-phase stepper motor.
- What are the supported stepper motor drive formats?
The PCA9629APWJ supports one-phase (wave drive), two-phase, and half-step drive formats.
- What is the range of the programmable step rate?
The step rate can be programmed from 333.3 kpps to 0.3 pps with ±3% accuracy.
- Does the PCA9629APWJ have a built-in oscillator?
Yes, it has a built-in 1 MHz oscillator that requires no external components.
- What is the purpose of the GPIOs on the PCA9629APWJ?
The four General Purpose Input/Outputs (GPIOs) can be used for sensing logic level outputs from optical interrupter modules and generating an active LOW interrupt signal on the INT pin.
- Can the PCA9629APWJ be programmed to change motor operation on the fly?
Yes, it can be programmed to re-start the motor with a new speed and operation while the motor is still running, and to change the ramp rate curve on the fly.
- What is the significance of the INT pin on the PCA9629APWJ?
The INT pin generates an active LOW interrupt signal, useful for sensing the home position of the motor shaft or as a reference for step pulses.
- What is the operating temperature range of the PCA9629APWJ?
The operating temperature range is -40°C to 85°C.
- What package type is the PCA9629APWJ available in?
The PCA9629APWJ is available in a TSSOP16 package.
- What are some typical applications of the PCA9629APWJ?
Typical applications include industrial automation, medical devices, consumer electronics, automotive systems, and robotics.
