X-NUCLEO-IHM14A1 STMICROELECTRONICS | Alldatasheet

Document overview

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Technical content

Features

 Operating voltage: 7 to 45 V  Output current up to 1.5 Arms  Fine tuning microstepping up to the 256th step  Current control with adjustable OFF time  Full protection set:  Overcurrent protection  Short-circuit protection  Under voltage lock out  Thermal shutdown  Compatible with Arduino UNO R3 connector  Compatible with STM32 Nucleo boards  RoHS compliant

Applications

 3D printers  Medical equipment  Industrial 2D printers  Textile and sewing machines  CCTV, security and dome cameras  ATM and cash handling machines  Office and home automation  POS  Robotics

Description

The X-NUCLEO-IHM14A1 motor driver expansion board is based on the STSPIN820 monolithic driver for stepper motors. It represents an affordable, easy-to-use solution for driving stepper motors in your STM32 Nucleo project, implementing motor driving applications such as 2D/3D printers, robotics and security cameras. The STSPIN820 implements a PWM current control with constant OFF time adjustable via an external resistor and a microstepping resolution up to the 256th step. The X-NUCLEO-IHM14A1 expansion board is compatible with the Arduino UNO R3 connector and the ST morpho connector, so it can be plugged to the STM32 Nucleo development board and stacked with additional X-NUCLEO expansion boards.

Schematic diagram X-NUCLEO-IHM14A1 Schematic diagram Figure 1: X-NUCLEO-IHM14A1 circuit schematic Vs GND 3.3V GND GND EN DIR REF CLK DEC GND STBY . . . . Roff C1: SMD footprint option C2: Through Hole footprint option OUTA1 OUTA2 OUTB1 OUTB2 OUTB1 OUTB2 OUTA2 OUTA1 EN_FAULT EN_FAULT VREF REF_PWM REF_PWM STBY MODE1 MODE2 MODE3 STCK DIR DECAY MODE1 MODE2 MODE3 MODE1 MODE3 MODE2 STBY STBY DECAY DECAY STCK DIR OUTA1 OUTA2 OUTB2 OUTB1 TOFF VS VS VDD VDDVDD VDD VDD VDD VDD VDD VDD VS R24 10k YELLOW 2 1 TP8 GND 39k R14 0.68/0.5W R13 0.68/0.5W R12 10k/0.5W MODE2 +C2 12 R20 18k CN8 TP2 OUTA1 MODE3 47k DECAY TP3 OUTA2 R11 10k/0.5W R15 0.68/0.5W 220n R19 22k TP4 OUTB1 R26 0 R10 10k/0.5W R25 0 TP5 OUTB2 R18 47k MODE1 R29 0 CN10 CON-2x19 220n CN7 CON-2x19 5k6 R4 NM TP7 VDD YELLOW 2 1 R27 NM STSPIN820 VREF1 GND2 GND 3 SNSA 4 SENSEA1 5 OUTA1 7 OUTA2 8 VS9 VS10 OUTB2 11 OUTB1 12 SENSEB2 13 SENSEB1 14 SNSB 15 STBY16 EN_FAULT 17 DECAY18 STCK19 DIR20 MODE121 MODE222 MODE323 TOFF24 SENSEA2 6 EPAD 25 R5 22k YELLOW 2 1 33 µF/50 V12 R22 10k CN1 CN5 CN9 R23 10k TP6 GND R16 0.68/0.5W 330 RED 2 1 10k/0.5W TP1 VREF R17 47k TP9 VS 10n CN6 R28 NM R21 10k YELLOW 2 1 Vref 33 µF/50 V 330 n/50 V CON-1x6 CON-1x10 CON-1x8 CON-1x8

Revision history

Table 1: Document revision history Date Version Changes 17-Oct-2017 1 Initial release.