View from the top side. Further infos can be also found in the schematics PDF file.


| Pin | Function |
|---|---|
| . | Power Supply |
| GND | Ground |
| VM | Motor Supply Voltage (5.5-46V) |
| VIO | Logic Supply Voltage (3.3-5V or 5V) |
| . | Motor Outputs |
| M1A | Motor Coil 1 |
| M1B | Motor Coil 1 |
| M2A | Motor Coil 2 |
| M2B | Motor Coil 2 |
| . | Control Inputs |
| STEP | Step-Signal Input |
| DIR | Direction-Signal Input |
| EN | Enable Motor Outputs (GND=on, VIO=off, OPEN=Auto-Power-Down) |
| . | Configuration |
| CFG0 | Chopper Off Time TOFF (GND=140tclk, VIO=236tclk, OPEN=332tclk) |
| CFG1 | Step-Configuration |
| CFG2 | Step-Configuration |
| CFG3 | Current Setting (GND=int, VIO=int, OPEN=ext) |
| CFG4 | Chopper Hysteresis HEND (GND=5, VIO=9, OPEN=13) |
| CFG5 | Chopper Blank Time TBL (GND=16, VIO=24, OPEN=36) |
| DIAG0 | Diagnostics Output 0 (50k pull-up to 2.5V) |
| DIAG1 | Diagnostics Output 1 (100k pull-down to GND) |
| VREF | Analog Reference Voltage |
| CFG2 | CFG1 | Steps | Interpolation | Mode |
|---|---|---|---|---|
| GND | GND | 1 | - | spreadCycle |
| GND | VIO | 1/2 | - | spreadCycle |
| GND | OPEN | 1/2 | 1/256 | spreadCycle |
| VIO | GND | 1/4 | - | spreadCycle |
| VIO | OPEN | 1/4 | 1/256 | spreadCycle |
| OPEN | VIO | 1/4 | 1/256 | stealthChop |
| VIO | VIO | 1/16 | - | spreadCycle |
| OPEN | GND | 1/16 | 1/256 | spreadCycle |
| OPEN | OPEN | 1/16 | 1/256 | stealthChop |