You have entered a value in the highlighted fields below that contain invalid characters. Please revise your selection using valid characters only.

Product may not be an exact match for your search

You previously purchased this product. View in Order History





Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
  • Enter your custom part number in the textbox above
  • Maximum Part Numbers added.
    Delete older entries to add more.

Part Number Saved

Part Number Saved

Technical Datasheet:
AEK-MOT-SM81M1   Datasheet
Supply Frame Models Link
See all Technical Docs

Product Overview

Stepper motor driver evaluation board based on the L99SM81V for automotive applications. This evaluation board is designed to drive a bipolar stepper motor in micro-stepping mode with coil voltage monitoring for stall detection. This application board features the automotive-grade L99SM81V stepper motor driver with embedded power MOSFETs and a comprehensive set of I/Os for MCU control and feedback signalling using SPI communication through a 12-pin male connector or two 5-pin connectors on the board. The board is developed as part of the AutoDevKit initiative and evaluation firmware is available for suitable microcontrollers such as the automotive-grade SPC5 series MCU on the AEK-MCU-C4MLIT1 control board.
  • Board reverse battery protection with STD95N4F3 MOSFET
  • Input operating voltage range from 6V to 28V
  • Output current up to 1.35A
  • Board size is 65mm length x 81mm width x 11mm maximum component height
  • All ST components are qualified automotive grade
  • Micro-stepping and hold functions
  • Suitable for automotive bipolar stepper motor applications
  • BEMF monitoring for stall detection
  • Programmable configuration via SPI
  • 5V internal linear voltage regulator (output available on board connector)


Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Product Information

Find similar products Choose and modify the attributes above to find similar products.

Technical Documents (1)

1 total stock globally Need more?

1 UK stock available for 5-8 business days delivery

Due to market conditions delivery times are for general guidance only and may be subject to change at short notice

$62.27 ( $68.50  Inc. GST)

Pricing is unavailable. Please contact customer services.

Price for:
Multiple: 1 Minimum: 1
  • 1+
Quantity Price (Incl GST) Your Price (Incl GST)
1+ $62.27 ($68.50)
Promotional price
Contract Price
Web only price
Web only contract price
  ( )
Quantity Price (Incl GST) Your Price (Incl GST)

Pricing is unavailable. Please contact customer services.

No longer stocked:: No Longer Manufactured::
Add to Basket Add to Basket Pre-Order
Restricted Item
Enter Your Line Note
Total Price:
Total Price: ( )
Total Price: --