LM628N-8 (Texas Instruments) is a precision motion-control processor for DC and brushless DC servo motors, 8 MHz version, in a PDIP-28 package.

• 32-bit position, velocity and acceleration registers
• Programmable digital PID filter with 16-bit coefficients · trapezoidal velocity profile generator
• 8- or 12-bit DAC output data · quadrature incremental encoder interface with index input
• 8-bit parallel asynchronous host interface · −40 °C to 85 °C

Data per Texas Instruments LM628/LM629 datasheet.