DocID17659 Rev 12 7/133
STM32L151x6/8/B STM32L152x6/8/B List of figures
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List of figures
Figure 1. Ultra-low-power STM32L151x6/8/B and STM32L152x6/8/B block diagram. . . . . . . . . . . . 13
Figure 2. Clock tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3. STM32L15xVx UFBGA100 ballout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 4. STM32L15xVx LQFP100 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 5. STM32L15xRx TFBGA64 ballout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 6. STM32L15xRx LQFP64 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 7. STM32L15xCx LQFP48 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Figure 8. STM32L15xCx UFQFPN48 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Figure 9. Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 10. Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 11. Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 12. Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 13. Optional LCD power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 14. Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 15. High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Figure 16. Low-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Figure 17. HSE oscillator circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 18. Typical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Figure 19. I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Figure 20. Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 21. I2C bus AC waveforms and measurement circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Figure 22. SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figure 23. SPI timing diagram - slave mode and CPHA = 1(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figure 24. SPI timing diagram - master mode(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 25. USB timings: definition of data signal rise and fall time . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Figure 26. ADC accuracy characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 27. Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Figure 28. Maximum dynamic current consumption on VREF+ supply pin during ADC
conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Figure 29. Power supply and reference decoupling (VREF+ not connected to VDDA). . . . . . . . . . . . . . 98
Figure 30. Power supply and reference decoupling (VREF+ connected to VDDA). . . . . . . . . . . . . . . . . 98
Figure 31. 12-bit buffered /non-buffered DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Figure 32. LQFP100 14 x 14 mm, 100-pin low-profile quad flat package outline . . . . . . . . . . . . . . . 105
Figure 33. LQPF100 14 x 14 mm, 100-pin low-profile quad flat package recommended footprint . . 107
Figure 34. LQFP100 14 x 14 mm, 100-pin package top view example . . . . . . . . . . . . . . . . . . . . . . . 107
Figure 35. LQFP64 10 x 10 mm, 64-pin low-profile quad flat package outline . . . . . . . . . . . . . . . . . 108
Figure 36. LQFP64 10 x 10 mm, 64-pin low-profile quad flat package recommended footprint . . . . 109
Figure 37. LQFP64 10 x 10 mm, 64-pin low-profile quad flat package top view example . . . . . . . . . 110
Figure 38. LQFP48 7 x 7 mm, 48-pin low-profile quad flat package outline . . . . . . . . . . . . . . . . . . . 111
Figure 39. LQFP48 7 x 7 mm, 48-pin low-profile quad flat recommended footprint. . . . . . . . . . . . . . 112
Figure 40. LQFP48 7 x 7 mm, 48-pin low-profile quad flat package top view example . . . . . . . . . . . 113
Figure 41. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Figure 42. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package recommended footprint . . . . . . . . . . . . . . 115
Figure 43. UFQFPN48 7 x 7 mm, 0.5 mm pitch, package top view example . . . . . . . . . . . . . . . . . . 116
Figure 44. UFBGA100, 7 x 7 mm, 0.5 mm pitch, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Figure 45. UFBGA100 7 x 7 mm, 0.5 mm pitch, package recommended footprint . . . . . . . . . . . . . . 118
Figure 46. UFBGA100 7 x 7 mm, 0.5 mm pitch, package top view example. . . . . . . . . . . . . . . . . . . 119
Figure 47. TFBGA64 5 x 5 mm, 0.5 mm pitch, package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120