
B-STLINK-ISOL top view. Picture is
not contractual.
B-STLINK-ISOL
Data brief
Isolation and voltage adapter board for STLINK-V3SET
Features
• 1.65 V - 3.3 V voltage adapter and galvanic isolation board for STLINK-V3SET
• 2.5 kV
IEC 62368‑1:2014
• Input/output isolation and level shifters for STM32 debug SWD, SWV, and JTAG
signals
• Input/output isolation and level shifters for VCP Virtual COM port (UART) signals
• Input/output isolation and level shifters for bridge (SPI/UART/I2C/CAN/GPIOs)
signals
• Closed casing when using the STDC14 connector (STM32 SWD, SWV, and
VCP)
• Connection compatible with the STLINK-V3SET adapter board (MB1440) for
STM32 microcontrollers JTAG and bridge
insulation rating; 300 V
rms
basic insulation working voltage per
rms
Product status link
B-STLINK-ISOL
Description
The B-STLINK-ISOL board is an additional module for STLINK-V3SET, performing
galvanic isolation and voltage adaptation for STM32 microcontroller targets running
below 3.3 V down to 1.65 V.
The module can be enclosed directly in the original STLINK-V3SET casing, when
used as an STM32 debugging probe (JTAG/SWD/SWV/VCP) through the STDC14
connector. It can be also inserted between the STLINK-V3SET main board (MB1441)
and its adapter board (MB1440) when providing access to bridge signals and other
connectors.
B-STLINK-ISOL does not support STM8 targets, for which voltage adaptation is
performed on the baseline adapter board (MB1440) provided with the STLINKV3SET.
DB4394 - Rev 1 - January 2021
For further information contact your local STMicroelectronics sales office.
www.st.com

1 Ordering information
To order the B-STLINK-ISOL module, refer to Table 1. For details, refer to the user manual on the STLINK-V3SET
product web page.
Table 1. Ordering information
Order code Board reference User manual Description
B-STLINK-ISOL MB1599 UM2448 Isolation and voltage adapter board for STLINK-V3SET
The STLINK-V3SET modular stand-alone debugging and programming probe embeds an STM32 32-bit
microcontroller based on the Arm® Cortex®‑M processor.
Note: Arm is a registered trademark of Arm Limited (or its subsidiaries) in the US and/or elsewhere.
B-STLINK-ISOL
Ordering information
DB4394 - Rev 1
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