STMicroelectronics EVAL6472H-DISC

Overview

EVAL6472H-DISC from STMicroelectronics is a standalone development board integrating the L6472H stepper motor driver and STM32F105RBT6 MCU, enabling full evaluation of high-precision motion control with up to 1/16 microstepping, 8–45 V motor supply, and 3 A_r.m.s. per phase - used for rapid prototyping of industrial actuators, lab automation stages, and precision positioning systems.

For engineers reviewing the EVAL6472H-DISC datasheet, EVAL6472H-DISC pinout, EVAL6472H-DISC application, or EVAL6472H-DISC equivalent, this board provides immediate access to configurable motor control via USB GUI, JTAG debug, UART interface, and real-time LED status indicators - eliminating need for external host controller or custom hardware during early-stage validation.

Technical Context

The board implements a complete dSPIN-compatible motion control stack: the STM32F105RBT6 (ARM Cortex-M3, 72 MHz, 64-pin LQFP) runs firmware that configures and commands the L6472H HTSSOP28 driver via SPI, supporting autonomous operation without PC dependency. All critical timing signals - including oscillator (8 MHz HC49/US-SM crystal), reset, and clock distribution - are internally routed and validated.

Hardware-level features include dual power domains (VS = 8–45 V for motor, VDD = 3.3 V logic), adjustable voltage compensation via TP7, dedicated test points for UART (TP4–TP6), motor supply (TP2), and ground (TP3), plus jumper-selectable boot mode (J6) and debug interface (J4/J5) - enabling both GUI-driven setup and firmware-level customization.

Key Specifications

Availability

EVAL6472H-DISC is available at Aetrix Electronics and suitable for industrial motion prototyping, laboratory automation equipment development, and embedded stepper control system validation requiring stable component supply and long-term design support.

Supply support for EVAL6472H-DISC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog/mixed-signal solutions for automotive, industrial, and consumer markets.

This board belongs to ST's Discovery evaluation platform family, engineered specifically to accelerate adoption of their motor control ICs - providing out-of-box usability, software integration (SPIN GUI), and hardware flexibility for both learning and professional development.

FAQ

Does EVAL6472H-DISC require an external host computer to operate?

No - the board is fully autonomous thanks to its embedded STM32F105RBT6 MCU. It can execute preloaded motion profiles independently using onboard buttons (Start/Stop/Reset) and LED feedback. A PC is only required for initial configuration via USB GUI or firmware updates.

What motor types and ratings are compatible with this board?

EVAL6472H-DISC supports bipolar stepper motors with rated phase current ≤3 A_r.m.s. and supply voltage between 8 V and 45 V. It has been validated with standard NEMA 17 and NEMA 23 frame motors featuring 1.8° step angle and 0.5–3.0 Ω phase resistance.

Can I reprogram the onboard STM32 MCU with custom firmware?

Yes - the board exposes a standard 20-pin JTAG connector (J4) and supports SWD debugging. ST's STM32CubeIDE and SPIN SDK provide full toolchain support, including register-level drivers for L6472H configuration and motion command execution.

Are all jumpers and connectors documented in the board layout?

Yes - Table 2 in the official data brief documents all 7 jumpers (J1–J7) and their functions, including motor supply selection (J1), bridge output routing (J2/J3), debug enable (J4), USB mode (J5), boot configuration (J6), and external switch input (J7). Pinouts for J4 (JTAG) and J5 (USB) are provided in Tables 3 and schematic Figures 2–3.