STMicroelectronics UM3531 Nucleo Expansion Board
Introduction
The X-NUCLEO-ESE01A1 expansion board is based on the STSAFE-A120 secure element. It can be used with any STM32Nucleo development board.
The on-board STSAFE-A120 is customized with a standard profile for evaluation and is compatible with the Arduino UNO R3 connector.
The X-NUCLEO-ESE01A1 expansion board is used with free X-CUBE-STSE01 or X-CUBE-SBSFU software packages containing sample code to demonstrate how to implement security applications.
Notice: For dedicated assistance, submit a request through our online support portal at www.st.com/support.
Getting started
Hardware requirements
The X-NUCLEO-ESE01A1 expansion board can be connected to any STM32 Nucleo development board through the matching Arduino UNO R3 connector pins.
Note: Handle the X-NUCLEO-ESE01A1 with care and avoid bending or damaging the pins as the board has male/ female pass-through connectors and ESD-sensitive components.
System requirements
To complete the system setup, you need:
- Computer with STM32 Cube IDE (multi-OS development tool) or one of the compatible software development environments: IAR, Arm Keil, software package (X-CUBE-STSE01) installed on the user PC.
Hardware description
The X-NUCLEO-ESE01A1 expansion board has an embedded STSAFE-A120 secure element to allow you to evaluate its authentication and data management services connected to a local or remote host. This STSAFE-A120 is factory personalized with a generic sample profile.
The main features of the X-NUCLEO-ESE01A1 expansion board are:
- On-board STSAFE-A120 customized with a standard evaluation profile
- HE10 extension connector to mount additional STSAFE devices
- Arduino UNO R3 connector
- Free drivers, middleware and software samples compatible with the STM32 ODE
- RoHS and WEEE compliant
The X-NUCLEO-ESE01A1 interfaces with the STM32 Nucleo microcontrollers via the I²C communication bus.
Jumpers and solder bridges
Table 1. X-NUCLEO-SAFEA1A expansion board jumper and solder bridge functions
Connector (optional)
X-NUCLEO-ESE01A1 Nucleo expansion board has an HE10 extension connector (J2) footprint to mount an additional STSAFE-A1xx secure element or any other use case.
Note: If you use the connector to accommodate new generation STSAFE-A devices, be sure that you populate jumper P3 in order to place the current STSAFE-A120 secure element soldered on the board in reset mode.
STM32 series microcontroller software
The STM32 ODE software package X-CUBE-STSE01 provides demonstration source code for any NUCLEO development board with X-NUCLEO-ESE01A1 expansion. The X-CUBE-STSE01 package includes drivers, middleware and several demonstration codes that implement the features of the STSAFE-A120 device through a host microcontroller. The demonstration codes use the STSAFE-A1xx middleware built on the STM32Cube software technology. They illustrate authentication, key pair generation, key establishment, local envelope wrapping and pairing features.
Schematic diagrams
Figure 2. X-NUCLEO-ESE01A1 circuit schematic
Bill of materials
Table 2. X-NUCLEO-ESE01A1
Board versions
Table 3. X-NUCLEO-ESE01A1 versions
- This code identifies the X-NUCLEO-ESE01A1 evaluation board first version.
Regulatory compliance information
Notice for US Federal Communications Commission (FCC)
For evaluation only; not FCC approved for resale
FCC NOTICE – This kit is designed to allow:
- Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and
- Software developers to write software applications for use with the end product.
This kit is not a finished product and when assembled, may not be resold or otherwise marketed unless all\ required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2. Notice for Innovation, Science and Economic Development Canada (ISED) For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules.
Notice for the European Union
This device is in conformity with the essential requirements of Directive 2014/30/EU (EMC) and of the Directive 2011/65/EU (RoHS II), including subsequent revisions and additions, as well as amended by the Delegated Directive 2015/863/EU (RoHS III).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091) and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (UK S.I. 2012 No. 3032).
Revision history
Table 4. Document revision history
IMPORTANT NOTICE – 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. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgment. Purchasers are solely responsible for the choice, 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 provisions 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. For additional information about ST trademarks, refer to www.st.com/trademarks. 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. © 2025 STMicroelectronics – All rights reserved
Documents / Resources
 |
STMicroelectronics UM3531 Nucleo Expansion Board [pdf] User Manual UM3531, UM3531 Nucleo Expansion Board, Nucleo Expansion Board, Expansion Board |