Rohm STEPMO_EVK_20x, Manual

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© 2016 ROHM Co., Ltd. All rights reserved.
EUDC59-U-002 - Rev. 1.3
EVALUATION BOARD MANUAL
Motor Driver
Stepper Motor Driver IC EVK
STEPMO_EVK_20x
ROHM Stepper Motor Driver IC Evaluation Kit based on Arduino/Genuino Platform
● Abstract
This evaluation board manual describes the
usage of ROHM’s stepper motor driver IC
evaluation kit (EVK) called STEPMO_EVK_20x.
It is designed as a plug-in board (Shield) for
popular Arduino microcontroller platform. This
document provides guidelines to quickly setup
the hardware and software for fast and easy
stepper motor driver IC performance evaluation.
●
Description of Supported ICs
This EVK supports a variety of pin-compatible
ROHM stepper motor driver ICs from standard,
microstep, low voltage and high voltage families
with CLK-IN (clock input) or PARA-IN (parallel
input)
control. They integrate PWM
constant-current drive with adjustable decay ratio
and the ability for full, half and microstepping.
The ICs feature single supply operation by
integrating the voltage regulator for the low
power logic together with highly efficient DMOS
output power stages. These do not require an
internal charge pump so the motor drivers
achieve low EMI performance. The motor drivers
integrate various protection functions such as
Ghost Supply Prevention (GSP), Thermal
Shutdown
(TSD), Over-Current Protection
(OCP), Under / Over Voltage Lockout (UVLO /
OVLO) high ESD resistance and Pin Short
Protection for robust and reliable operation. The
ICs are housed in compact HTSSOP-B28 power
packages. For further details, please also consult
the
relevant product datasheets at
http://www.rohm.com .
● EVK Key Specifications (Across Model Versions)

Input voltage
range…………………..……8~42V

Maximum Output Current Range..........1A~2.5A
 Stepping Modes……………………. ,½,¼,⅛,
● EVK Features

Designed as plug-in Shield for Arduino platform

Recommended: Arduino Uno

Several model variants covering wide range of
pin- compatible stepper driver ICs

Support of bipolar or unipolar stepper motors

Adjustable current limit

Adjustable current decay mode

Single supply operation

Stackable design to allow controlling two motors
at the same time

Reverse power supply protection

Software library for Arduino IDE

Arduino example programs (Sketches)

Visit
http://www.rohm.com/web/eu/arduino-stepper-motor-shield
for details