EVAL6470H-DISC

EVAL6470H-DISC L6470 Discovery: development tool to explore L6470 motor driver Data brief Description The L6470 Discovery is a low cost development tool to explore the L6470 motor driver. An ideal starter-kit for both beginners and experienced users, it is autonomous and can be used with a software interface or with a custom firmware thanks to the embedded microcontroller. Through the available GUI the user can easily set the full configuration of application parameters. “Plug and Play” tool it offers high motor control flexibility thanks to the wide operating voltage range from 8 V to 45 V and the current capability up to 3 Ar.m.s. It is equipped with LED indicators for specific ready, busy, error warning. Features  Voltage mode driving featuring extreme smoothness  Up to 1/128 microstepping  Fully autonomous solution embedding an STM32™ MCU and the L6470H stepper motor driver  Compatible with SPIN family evaluation software  Wide voltage range from 8 V to 45 V  High phase current up to 3 Ar.m.s  Footprint optimized for external resonator or crystal  Switch motor input control  Keys start/left - stop/right - reset  Ready, busy, error LED indicators  Spare LED indicators for specific design  Adjustable supply voltage compensation March 2015 DocID025447 Rev 4 For further information contact your local STMicroelectronics sales office. 1/9 www.st.com Board description EVAL6470H-DISC Board description Table 1. Electrical specifications Parameter Value Supply voltage (VS) 8 to 45 V Maximum output current (each phase) 3 Ar.m.s Logic supply voltage (VREG) 3 V (internal supply) Logic interface voltage (VDD) 3.3 V (internal supply) Low level logic inputs voltage 0V High level logic input voltage VDD Stepping Up to 1/128 microstepping Operating temperature -25 to 125 °C Figure 1. Jumper and connector locations 2/9 DocID025447 Rev 4 EVAL6470H-DISC Board description Table 2. Jumpers and connectors Name Function J1 Motor supply voltage J2 Bridge B output J3 Bridge A output J4 Debug JTAG function J5 USB function J6 Boot mode J7 External switch input R29 OSCIN and OUSCOUT pins TP1 VDD - logic supply voltage TP2 VS - motor supply voltage TP3 GND - ground test point TP4 UART RX - debug test point TP5 UART TX - debug test point TP6 UART CK - debug test point TP7 Motor voltage compensation test point Table 3. JTAG connector pinout (J4) Name Type Function 1-2 Supply EXT_VDD 3 Digital I/O External RESET 5 Digital I/O INPUT (TDI) 7 Digital I/O Mode select (TMS) 9 Digital I/O Clock (TCK) 13 Digital I/O OUTPUT (TDO) 15 Digital I/O Internal RESET 11 - 17 - 19 Digital I/O Pull-down 4 - 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 Ground Ground DocID025447 Rev 4 3/9 9 Board description EVAL6470H-DISC Figure 2. Schematic (power supply part) 73 9''  8     -     6+(// 6+(// 6+(// 6+(// 86%B9&& 86%'0 86%'3 ,' 86%B*1'      9 86%'0 86%'3 .(