Datasheet

List of figures STM32F21xxx
8/175 DocID17050 Rev 9
List of figures
Figure 1. Compatible board design between STM32F10xx and STM32F2xx
for LQFP64 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2. Compatible board design between STM32F10xx and STM32F2xx
for LQFP100 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 3. Compatible board design between STM32F10xx and STM32F2xx
for LQFP144 package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 4. STM32F21x block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 5. Multi-AHB matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 6. Regulator OFF/internal reset ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 7. Startup in regulator OFF: slow V
DD
slope
- power-down reset risen after V
CAP_1
/V
CAP_2
stabilization . . . . . . . . . . . . . . . . . . . . . . . . 25
Figure 8. Startup in regulator OFF: fast V
DD
slope
- power-down reset risen before V
CAP_1
/V
CAP_2
stabilization . . . . . . . . . . . . . . . . . . . . . . 25
Figure 9. STM32F21x LQFP64 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Figure 10. STM32F21x LQFP100 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Figure 11. STM32F21x LQFP144 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Figure 12. STM32F21x LQFP176 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 13. STM32F21x UFBGA176 ballout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Figure 14. Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 15. Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 16. Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Figure 17. Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 18. Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Figure 19. Number of wait states versus f
CPU
and V
DD
range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 20. External capacitor C
EXT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 21. Typical current consumption vs temperature, Run mode, code with data
processing running from RAM, and peripherals ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 22. Typical current consumption vs temperature, Run mode, code with data
processing running from RAM, and peripherals OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 23. Typical current consumption vs temperature, Run mode, code with data
processing running from Flash, ART accelerator OFF, peripherals ON . . . . . . . . . . . . . . . 78
Figure 24. Typical current consumption vs temperature, Run mode, code with data
processing running from Flash, ART accelerator OFF, peripherals OFF . . . . . . . . . . . . . . 78
Figure 25. Typical current consumption vs temperature in Sleep mode,
peripherals ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 26. Typical current consumption vs temperature in Sleep mode,
peripherals OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Figure 27. Typical current consumption vs temperature in Stop mode . . . . . . . . . . . . . . . . . . . . . . . . 81
Figure 28. High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Figure 29. Low-speed external clock source AC timing diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Figure 30. Typical application with an 8 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Figure 31.
Ty
pical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figu
re 32. ACC
HSI
versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 33. ACC
LSI
versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 34. PLL output clock waveforms in center spread mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 35. PLL output clock waveforms in down spread mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 36. TTa and FT input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Figure 37. I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106