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