Product overview
Description
The STEVAL-BMS1T is a SPI to isolated SPI dongle, which allows converting SPI signals into isolated SPI signals, thus reducing the number of necessary wires from 4 to 2.
The ISOSPI protocol features differential communication to ensure higher noise immunity and robustness for long-distance communications.
The STEVAL-BMS1T is based on the L99BM1T general-purpose SPI to isolated SPI bidirectional transceiver, which can transfer communication data incoming from a classical 4-wire based SPI interface to a 2-wire isolated interface (and vice versa).
The L99BM1T hosted on the STEVAL-BMS1T can be configured either as a slave or as a master of the SPI bus and supports any protocol of 8-to-64-bit SPI frames.
The SPI peripheral can work up to 10 MHz when configured as a slave. The SPI clock frequency can be programmed (250 kHz, 1 MHz, 4 MHz, or 8 MHz) when the device is configured as a master.
The transceiver is natively compatible with the L99BM114 isolated SPI, allowing its usage in battery management system (BMS) applications. The basic BMS analog front-end node board is the STEVAL-BMS114.
From the microcontroller side, the STEVAL-BMS1T board can be connected via SPI with SPI enabled microcontrollers and in particular with STM32 microcontroller families.
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All features
- Hosts the L99BM1T general purpose SPI to isolated SPI bi-directional transceiver
- Master/slave configuration through GPIOs or jumpers
- 4 configurable pins for the SPI protocol
- 2 configurable pins for amplitude and frequency of the converted signal (ISOSPI)
- Dimensions: 85mm x 30mm
Recommended for you
All resources
| Resource title | Version | Latest update |
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Board Manufacturing Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 29 Jan 2025 | 29 Jan 2025 |
Bill of Materials (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 1.0 | 29 Jan 2025 | 29 Jan 2025 |
Schematic Pack (1)
| Resource title | Version | Latest update | ||
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| 1.0 | 29 Jan 2025 | 29 Jan 2025 |
CAD Design Files (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| ZIP | 1.0 | 30 Jan 2025 | 30 Jan 2025 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | WEEE Compliant | Material Declaration** |
|---|---|---|---|---|---|---|
| STEVAL-BMS1T | Active | CARD | Industrial | Ecopack2 | Yes | |
STEVAL-BMS1T
Package:
CARDMaterial Declaration**:
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Supplier | Core Product | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-BMS1T | | | distributors No availability of distributors reported, please contact our sales office |
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STEVAL-BMS1T Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors