The PG001M CMOS IC converts parallel-data signals from a low cost, 8-bit microprocessor or microcontroller into a serial-data format compatible with the SLA7042M and SLA7044M power multi-chip modules to drive unipolar PWM, high-current stepper motors. The converter provides for five basic modes of operation:

1) normal, two-phase, full step (100% torque vector),
2) two-phase boosted torque (141% torque vector),
3) half-step, constant torque operation (using a 2-1-2 output switching),
4) quarter-stepping utilizing ratioed currents for constant torque, and
5) microstepping (1/8th steps) for quiet, smooth, resonance-free motor performance.

FEATURES
■ Intended For Use With SLA7042M or SLA7044M Microstepping, Unipolar PWM, High-Current Motor Drivers
■ Supports Five Stepper-Motor Operating Modes
■ µP-Compatible Inputs