Description Features The LM628/LM629 are dedicated motion-control processors n 32-bit position, velocity, and acceleration registers designed for use with a variety of DC and brushless DC n Programmable digital PID filter with 16-bit coefficients servo motors, and other servomechanisms which provide a n Programmable derivative sampling interval quadrature incremental position feedback signal. The parts n 8- or 12-bit DAC output data (LM628) perform the intensive, real-time computational tasks required n 8-bit sign-magnitude PWM output data (LM629) for high performance digital motion control. The host control n Internal trapezoidal velocity profile generator software interface is facilitated by a high-level command set. n Velocity, target position, and filter parameters may be The LM628 has an 8-bit output which can drive either an changed during motion 8-bit or a 12-bit DAC. The components required to build a servo system are reduced to the DC motor/actuator, an n Position and velocity modes of operation incr