X-NUCLEO-IHM01A1 STMicroelectronics

X-NUCLEO-IHM01A1 Stepper motor driver expansion board based on L6474 for STM32 Nucleo Data brief Description The X-NUCLEO-IHM01A1 is a stepper motor driver expansion board based on the L6474. It provides an affordable and easy-to-use solution for driving a stepper motor in your STM32 Nucleo project. The advanced current control of the L6474 and a complete set of protection features offer high levels of both performance and robustness. The X-NUCLEO-IHM01A1 is compatible with the Arduino UNO R3 connector, and supports the addition of other boards which can be stacked to drive up to three stepper motors with a single Features STM32 Nucleo board. Voltage range from 8 V to 45 V Phase current up to 3 A r.m.s. Power OK and fault LEDs Advanced current control Fully protected power stage Up to 1/16 microstepping resolution Compatible with Arduino UNO R3 connector Compatible with STM32 Nucleo boards Suitable for multi-motor solutions RoHS compliant March 2015 DocID026559 Rev 3 1/4 For further information contact your local STMicroelectronics sales office. www.st.comSchematic diagram X-NUCLEO-IHM01A1 1 Schematic diagram Figure 1. X-NUCLEO-IHM01A1 circuit schematic 2/4 DocID026559 Rev 3 CN7 1 2 3 4 R20 5 6 VDD CN6 7 8 9 10 1 11 12 IOREF 2 330R 13 14 3 15 16 C4 3.3V 4 17 18 5V D7 5 19 20 3.3NF C2 VS GND GREEN 6 21 22 + GND C1 C3 7 23 24 220NF VIN 8 25 26 47UF 100NF D1 27 28 TP1 CON-1x8 29 30 BAR43 31 32 1x8 - pitch 2.54 NP 2 1 33 34 35 36 VDD CN8 37 38 A0 1 A1 2 CON-2x19 A2 C6 VS 3 + A3 C5 C7 C8 4 A4 100NF NP 10UF 10NF CN1 5 A5 6 1 Vin CON-1x6 C9 C10 + C12 2 1x6 - pitch 2.54 100UF GND VDD 100NF 100NF 63V 3 TP2 B+ NP R22 4 10 2 R15 R14 NP B- OSCIN OUT1A 10K 3 5 NP OUT1A 11 VDD A+ OSCOUT U1 35 6 OUT2A 36 A- OUT2A ADCIN 8 L6474PD ADCIN R13 DIR 7 MKDS1/6-3.81 SW 10K 3.81 STCK 32 STBY RESET STCK 6 18 STBY RES OUT1B FLAG 31 17 FLAG OUT1B 29 BUSY SYNC SPI CS 30 20 CS OUT2B VDD 26 21 SPI NCK CK OUT2B C11 27 SDI R25 25 SDO 100NF 0R R21 D3 D4 D5 D6 330R YELLOW YELLOW YELLOW YELLOW SDI SDO DIR PWM R24 R23 0R SDI SDO D2 NP R16 R17 R18 R19 R1 R4 R7 R10 RED 2.2K 2.2K 2.2K 2.2K R12 R2 R5 R8 R11 0R R9 0R R3 R6 0R MIRE1 NP NP NP OPTICAL TARGET NP NP 0R NP NP NP MIRE2 OPTICAL TARGET R3 R2 R1 DIR R6 R5 R4 PWM MIRE3 OPTICAL TARGET R9 R8 R7 SDI SPIMotor R12 R11 R10 SDO CN3 CON-1x2 1x2 - pitch 2.54 CN9 CN5 CON-1x10 CON-1x8 1x10 - pitch 2.54 1x8 - pitch 2.54 SINGLE MOTOR R1 R4 R7 R12 CN10 CON-2x19 DIR 1 DIR 2 UART RX 1 UART TX 2 DIR 3 FLAG 3 PWM2 4 DIR2 5 38 37 DIR3 6 36 35 PWM3 7 34 33 PWM 1 DIR1 8 32 31 30 29 PWM 2 28 27 26 25 24 23 22 21 PWM 3 RESET EASY 1 20 19 PWM1 2 18 17 CS 3 16 15 MOSI 4 14 13 MISO 5 12 11 SCK 6 10 9 GND 7 8 7 AREF 8 6 5 SDA 9 4 3 SCL 10 2 1 MOSI 1 1->2 2->3 1 2 1 SPI MISO 24 VDD 28 9 DGND VREG 14 VBOOT 37 EPAD 13 3 CP 4 VSA 12 5 AGND VSA 33 VSA 1 34 PGND VSA 19 15 PGND VSB 16 VSB 22 VSB 23 VSB N3 N2 N1