Schematic - X-NUCLEO-IHM02A1 1/4 R6 L6470_0_VDD D4 GREEN_LED 560 VS C17 100nF 6.3V Place closed the two sides of the L6470PD C18 10uF 6.3V C19 L6470_0_GND L6470_0_1A L6470_0_VS L6470_0_nSTBY\nRST C24 1nF 6.3V SB1 L6470_0_OSCOUT L6470_0_GND Y2 SB2 (configuration for VS = 12V) VS L6470_0_VS 16MHz N.M. R8 62k N.M. L6470_0_1B C25 18pF N.M. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PGND_1 OUT1A_2 OUT1A_3 VSA_4 VSA_5 nSTBY_nRST SW ADCIN VREG OSCIN OSCOUT AGND CP VBOOT VSB_15 VSB_16 OUT1B_17 OUT1B_18 C26 18pF N.M. L6470PD R9 9.76k N.M. C29 3.3nF 6.3V N.M. D5 BZX84J-C3V6 N.M. OUT2A_36 OUT2A_35 VSA_34 VSA_33 STCK nFLAG nCS nBUSY_SYNC DGND SDI CK SDO VDD VSB_23 VSB_22 OUT2B_21 OUT2B_20 PGND_19 ExpPad 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 37 C22 + C23 100uF 63V L6470_0_2A L6470_0_VS L6470_0_GND L6470_0_STCK L6470_0_nFLAG L6470_0_nCS L6470_0_nBUSY\SYNC L6470_0_SDI L6470_0_SCK L6470_0_SDO L6470_0_VS L6470_0_2B L6470_0_GND L6470_0_GND Driver_0 C27 100nF 6.3V VS C30 C21 100nF 100nF 100nF 100nF 50V 50V 50V 50V U2 R7 39k C20 + C28 47uF 6.3V 220nF 16V R10 D6 BAV99 2 1 L6470_0_SW L6470_0_OSCOUT CON1 ST2 C32 10nF 50V Stepper Motor 2 1 2 L6470_0_2B L6470_0_1B 3 4 L6470_0_1A L6470_0_2A 4 terminals J3 1 100 3 C31 10nF 6.3V L6470_0_STCK Schematic - X-NUCLEO-IHM02A1 2/4 R1 L6470_1_VDD D1 GREEN_LED 560 VS C1 100nF 6.3V Place closed the two sides of the L6470PD C2 10uF 6.3V C3 L6470_1_GND L6470_1_1A L6470_1_VS L6470_1_nSTBY\nRST C8 1nF 6.3V SB3 L6470_1_OSCIN L6470_1_GND Y1 SB4 VS L6470_1_VS (configuration for VS = 12V) 16MHz N.M. R3 62k N.M. L6470_1_1B C9 18pF N.M. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PGND_1 OUT1A_2 OUT1A_3 VSA_4 VSA_5 nSTBY_nRST SW ADCIN VREG OSCIN OSCOUT AGND CP VBOOT VSB_15 VSB_16 OUT1B_17 OUT1B_18 C10 18pF N.M. L6470PD R4 9.76k N.M. C13 3.3nF 6.3V N.M. D2 BZX84J-C3V6 N.M. OUT2A_36 OUT2A_35 VSA_34 VSA_33 STCK nFLAG nCS nBUSY_SYNC DGND SDI CK SDO VDD VSB_23 VSB_22 OUT2B_21 OUT2B_20 PGND_19 ExpPad 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 37 C6 + C7 100uF 63V L6470_1_2A L6470_1_VS L6470_1_GND L6470_1_STCK L6470_1_nFLAG L6470_1_nCS L6470_1_nBUSY\SYNC L6470_1_SDI L6470_1_SCK L6470_1_SDO L6470_1_VS L6470_1_2B L6470_1_GND L6470_1_GND Driver_1 C11 100nF 6.3V VS C14 C5 100nF 100nF 100nF 100nF 50V 50V 50V 50V U1 R2 39k C4 + C12 47uF 6.3V 220nF 16V R5 D3 BAV99 2 1 L6470_1_SW 100 ST1 3 C15 10nF 6.3V C16 10nF 50V Stepper Motor 1 1 2 L6470_1_2B L6470_1_1B 3 4 L6470_1_1A L6470_1_2A 4 terminals L6470_1_OSCIN J4 1 CON1 L6470_1_STCK Schematic - X-NUCLEO-IHM02A1 3/4 STM32 NUCLEO CONNECTORS A0 A1 A2 A3 A4 A5 1 2 3 4 5 6 7 8 Arduino CN6 of NUCLEO BOARD CN6 IOREF RESET +3V3 +5V GND GND VIN PA0 PA1 PA4 PB0 PC1 PC0 PC9 PB8 PB9 AVDD GND PA5 PA6 PA7 PB6 PC7 PA9 PA8 PB10 PB4 PB5 PB3 PA10 PA2 PA3 CN5 Pass-Through: Male on Bottom - Female on Top 1 2 3 4 5 6 Arduino CN8 of NUCLEO BOARD CN7 of NUCLEO BOARD ST morpho PC11 PD2 E5V GND Arduino CN9 of NUCLEO BOARD 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 Arduino CN5 of NUCLEO BOARD 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 10 9 8 7 6 5 4 3 2 1 8 7 6 5 4 3 2 1 D15/SCL D14/SDA D13/SCK D12/MISO D11/MOSI/PWM D10/CS/PWM D9/PWM D8 D7 D6/PWM D5/PWM D4 D3/PWM D2 D1/TX D0/RX CN8 CN9 Pass-Through: Male on Bottom - Female on Top Pass-Through: Male on Bottom - Female on Top SB6 PB0 CN10 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 CN10 of NUCLEO BOARD CN7 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 PC8 PC6 PC5 U5V PD8 PA12 PA11 PB12 PB11/NC GND PB2 PB1 PB15 PB14 PB13 AGND PC4 NC/PF5 NC/PF4 ST1S14_PGOOD L6470_1_nSTBY\nRST PB5 L6470_0_nSTBY\nRST L6470_1_SW J2 1 3 5 7 DX side SX side L6470_1_OSCIN Pass-Through: Female on Bottom - Male on Top Pass-Through: Male on Bottom - Female on Top ST morpho Pass-Through: Female on Bottom - Male on Top PC10 PC12 VDD BOOT0 NC/PF6 NC/PF7 PA13 PA14 PA15 GND PB7 PC13 PC14 PC15 PH0/PF0/PD0 PH1/PF1/PD1 VLCD/VBAT PC2 PC3 SB5 L6470_0_OSCOUT 2 4 6 8 CON8 L6470_0_SW L6470_1_VDD VS L6470_1_nBUSY\SYNC L6470_0_VDD PC0 L6470_0_nBUSY\SYNC +5V PA7 2 1 PC1 L6470_0_nFLAG +3.3V_ST1S14 J1 R21 39k 1 2 3 4 SB41 R28 620 0 N.M. L6470_1_SDI D11 SMAJ48A R22 39k L6470_1_SDO 2 terminals SB40 0 PB15 SB26 0 ST3 L6470_1_nFLAG +3V3 SB10 (8V÷45V) L6470_0_SDI SB32 0 R29 620 PA6 R30 620 L6470_0_SDO SB11 CON4 C33 C40 C34 C41 ST1S14_nEN1 D9 ORANGE_LED D7 YELLOW_LED D8 RED_LED 100pF 6.3V 100pF 6.3V 100pF 6.3V PB14 SB23 0 PA4 100pF 6.3V L6470_1_nCS SB7 PA10 SB34 0 L6470_0_nCS PB3 SB8 PB6 L6470_1_SCK SB12 PA5 L6470_0_SCK SB13 PB4 PB13 SB9 2-3: - ST1S14 is inhibited - VDD is provided by +3V3 of 1-2 and 3-4 - Take care! Refer to the UM - ST1S14 is enabled - VDD is provided by +3V3 of - The main board is supplied the main board of the main board about external power supply the ST1S14 of the expansion board by ST1S14 of the expansion board Schematic - X-NUCLEO-IHM02A1 4/4 ST1S14_PGOOD C35 +3.3V_ST1S14 100nF 100V (8V÷45V) 27uH EN2 FB nEN1 ST1S14 8 47k R38 100k 4 + C39 C38 D10 STPS1L60 ST1S14_nEN1 R37 2 ExpPad PG GND VIN C37 100nF 100V SW 9 5 BOOT 6 7 C36 4.7uF 100V L1 U3 1 3 VS R39 59k 5.1pF 50V 47uF 6.3V