july 2015 docid028114 rev 1 1 / 4 for further information contact your local stmicroelectronics sales office www.st.com x - nucleo - ihm05a1 bipolar stepper motor driver expansion board based on the l6208 for stm32 nucleo data b rief features ? voltage range: 8 v to 50 v ? phase current: up to 2.8 a r.m.s. ? dual independent pwm current controllers ? fast and slow decay mode selection ? decoding logic for stepper motors, full and half step drives ? overcurrent protection ? thermal protection shuntdown ? compatible with arduino uno r3 connector ? compatible with stm32 nucleo boards ? rohs compliant d esc ription the x - nucleo - ihm05a1 is a bipolar stepper motor driver expansion board based on the l6208 driver for bipolar stepper motors. it provides an affordable and easy - to - use solu tion for driving bipolar stepper motors in stm32 nucleo projects. the x - nucleo - ihm05a1 is compatible with the arduino uno r3 connector, and supports the addition of other stm32 expansion boards with a single stm32 nucleo board. the user can also mount the st morpho connector.
schematic diagram x - nucleo - ihm05a1 2 / 4 docid028114 rev 1 1 schematic diagram figure 1 : x - nucleo - ihm05a1 circuit schematic b+ b- a+ a- en cw/ccw vrefb half/full vrefa clock control gnd gnd reset powerspin gnd vin - - - vrefa - - - - - - - - - - - - - - - - - gnd c12 radial instead of c1 smd vref a select : nucleo f0:r15=0 vcp vboot out-a+ out-a- out-b+ out-b- sense-b sense-a clock vrefa vrefb p w m-a p w m-b c w /ccw half/full reset control rca rcb enable vs r8 2.2k c11 820pf r6 4.7k r12 10k + c12 100uf 63v cn1 mkds1/6-3.81 3.81 1 2 3 4 5 6 c5 10nf d2 yellow d 1 bar43 2 1 3 r15 0r c 4 220nf c2 100nf cn7 con-2x19 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 r7 2.2k cn10 con-2x19 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 cn8 con-1x6 1x6 - pitch 2.54 1 2 3 4 5 6 r 4 100k r9 47k r11 10k r3 100r c9 100nf c7 68nf r10 47k cn6 con-1x8 1x8 - pitch 2.54 1 2 3 4 5 6 7 8 d4 yellow c8 68nf r13 10k c10 820pf r1 0r3 c3 100nf r5 4.7k r14 10k c6 5.6nf d3 yellow d5 yellow r2 0r3 cn5 con-1x10 1x10 - pitch 2.54 1 2 3 4 5 6 7 8 9 10 u1 l6208pd clock 10 cw/ccw 11 vcp 7 vboot 30 half/full 27 vsb 33 gnd 1 out1a 15 out2a 5 out2b 32 control 28 reset 8 rcb 24 vrefb 26 rca 13 vrefa 9 en 29 epad 37 out1b 22 gnd 18 vsa 4 gnd 19 gnd 36 nc#2 2 sensea 12 senseb 25 nc#3 3 nc#16 16 nc#6 6 nc#14 14 nc#17 17 nc#20 20 nc#21 21 nc#23 23 nc#31 31 nc#34 34 nc#35 35 cn9 con-1x8 1x8 - pitch 2.54 1 2 3 4 5 6 7 8 + c1 100uf 63v gspg1007151530sg
x - nucleo - ihm05a1 revision history docid028114 rev 1 3 / 4 2 revision history table 1: document revision history date version changes 17 - jul - 2015 1 initial release.
x - nucleo - ihm05a1 4 / 4 docid028114 rev 1 important notice C please read carefully stmicroelectronics nv and its subsidiaries (st) reserve the right to make changes, corrections, enhancements, modifications , and improvements to st products and/or to this document at any time without notice. pu rchasers should obtain the latest relevant information on st products before placing orders. st products are sold pursuant to sts terms and conditions of sale in place at the time of or der acknowledgement. purchasers are solely responsible for the choi ce, selection, and use of st products and st assumes no liability for application assistance or the design of purchasers products. no license, express or implied, to any intellectual property right is granted by st herein. resale of st products with p rovisions different from the information set forth herein shall void any warranty granted by st for such product. st and the st logo are trademarks of st. all other product or service names are the property of their respective owners. information in this document supersedes and replaces information previously supplied in any prior versions of this document. ? 2015 stmicroelectronics C all rights reserved
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