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AN4488 Datasheet(PDF) 5 Page - STMicroelectronics |
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AN4488 Datasheet(HTML) 5 Page - STMicroelectronics |
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5 / 44 page ![]() DocID026304 Rev 3 5/44 AN4488 List of figures 5 List of figures Figure 1. Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Figure 2. Power-on reset/power-down reset waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Figure 3. PVD thresholds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 4. Reset circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 5. PDR_ON simple circuitry example (not needed for STM32F411xx and STM32F446xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. PDR_ON timings example (not to scale, not needed for STM32F411xx and STM32F446xx) . . . . . . . . . . . . . . . . . . . 13 Figure 7. NRST circuitry example (only for STM32F411xx and STM32F446xx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 8. NRST circuitry timings example (not to scale, only for STM32F411xx and STM32F446xx) . . . . . . . . . . . . . . . . . . . . . . . . . 15 Figure 9. BYPASS_REG supervisor reset connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Figure 10. STM32F4 family compatible board design for LQFP64 package . . . . . . . . . . . . . . . . . . . . 21 Figure 11. STM32F4 family compatible board design for LQFP100 package . . . . . . . . . . . . . . . . . . . 22 Figure 12. Compatible board design STM32F4xx / STM32F446xx for LQFP144 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Figure 13. Compatible board design STM32F10xx/STM32F4xx for LQFP64 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 14. Compatible board design STM32F10xx/STM32F2xx/STM32F4xx for LQFP100 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Figure 15. Compatible board design STM32F10xx/STM32F2xx/STM32F4xx for LQFP144 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 16. Compatible board design STM32F2xx and STM32F4xx for LQFP176 and UFBGA176 packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figure 17. STM32CubeMX example screen-shot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Figure 18. HSE external clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 19. HSE crystal/ceramic resonators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Figure 20. LSE external clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 21. LSE crystal/ceramic resonators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Figure 22. Boot mode selection implementation example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Figure 23. Host-to-board connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Figure 24. JTAG connector implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Figure 25. Typical layout for VDD/VSS pair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figure 26. STM32F407IG(H6) microcontroller reference schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 39 |
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