Functional description of the STM32H745I-DISCO demonstration modules UM2222
74/76 UM2222 Rev 2
The user may switch off the Cortex-M7 (D1 domain goes to standby mode):
• Press User button on the STM32H745I-DISCO board to put D1-Domain in standby
mode
– All the STM32H745 D1 power domain goes to standby (including the Cortex-M7
and the internal FLASH and the LCD controller).
– The D2 domain remains in run mode with Cortex-M4 running from the local D2
RAM.
– The signal generator output is switched off (DAC is stopped) and the LCD is
shutdown.
– The Cortex-M4 still executes the oscilloscope application.
– An external signal must be connected to the oscilloscope (ADC) input (pin A2 on
CN7 connector).
• Pressing again the user button wakes up the Cortex-M7 D1 power Domain and
resumes the signal generator application
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