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STM32H562VG Datasheet(PDF) 158 Page - STMicroelectronics |
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STM32H562VG Datasheet(HTML) 158 Page - STMicroelectronics |
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158 / 270 page  Electrical characteristics STM32H562xx and STM32H563xx 158/270 DS14258 Rev 5 Designing hardened software to avoid noise problems EMC characterization and optimization are performed at component level with a typical application environment and simplified MCU software. Note that good EMC performance is highly dependent upon the user application, and the software in particular. Therefore it is recommended that the user applies EMC software optimization and prequalification tests in relation with the EMC level requested for its application. Software recommendations The software flow must include the management of runaway conditions such as: • Corrupted program counter • Unexpected reset • Critical data corruption (such as control registers) Prequalification trials Most of the common failures (unexpected reset and program counter corruption) can be reproduced by manually forcing a low state on the NRST or on the oscillator pins for 1 s. To complete these trials, ESD stress can be applied directly on the device, over the range of specification values. When unexpected behavior is detected, the software can be hardened to prevent unrecoverable errors occurring (see application note AN1015 “Software techniques for improving microcontrollers EMC performance”). Electromagnetic interference (EMI) The electromagnetic field emitted by the device is monitored while a simple application, executing EEMBC code, is running. This emission test is compliant with SAE IEC61967-2 standard, which specifies the test board and the pin loading. Table 54. EMI characteristics Symbol Parameter Conditions Monitored frequency band Max vs. [fHSE/fCPU] Unit 25/250 MHz SEMI Peak level(1) VDD = 3.6 V, TA = 25 °C, LQFP176-SMPS package, conforming to IEC61967-2 0.1 to 30 MHz 21 dBµV 30 to 130 MHz 22 130 MHz to 1 GHz 29 1 GHz to 2 GHz 21 EMI level 4 - 1. Refer to the EMI radiated test chapter of application note AN1709 “EMC design guide for STM8, STM32 and legacy MCUs” available from the ST website www.st.com. |
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