AN1905 ST Microelectronics, Inc., AN1905 Datasheet - Page 20

• Manufacturer Part Number: AN1905
• Description: St7mc Three-phase BLDC Motor Control Software Library
• Manufacturer: ST Microelectronics, Inc.

ST7MC THREE-PHASE BLDC MOTOR CONTROL SOFTWARE LIBRARY
Figure 8. Configuring the Motor Controller clock state on breakpoint with MDT50
3.4.2 Medium-high voltage application (above 30V)
Here the real-time emulator use is not recommended, even if protective boards are inserted.
Important Note:
For voltages above 30V, it is highly recommended to use only programmed devices. ICD de-
bugging can be used in conjunction with an ICC isolation board, as the one provided with the
ST7MC-KIT/BLDC starter kit, but the limitations mentioned in
apply, and are even emphasized by the high voltage levels.
Good practice for real-time application debugging is to use “diagnostic tools” such as:
– RS232 communication which can be easily isolated,
– Standalone DAC (serial SPI-based model for instance) to be able to monitor signals on an
– Debug outputs of the ST7MC itself (MCDEM and MCZEM pins), to monitor the D, Z and C
Refer to the application note AN438 (Safety Precautions for Development Tool Triac + Micro-
controller) for further details when working with the mains supply.
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oscilloscope,
events (refer to datasheet for details).
In the event of high voltage applications connected to the mains, the
application ground may be at a dangerous voltage; so too then would
be the MDT50 emulator (the protective boards do not provide
galvanic isolation).
Section 3.4.1
nevertheless