STM32F401xB STM32F401xC ARM® Cortex®-M4 32b MCU+FPU, 105 DMIPS, 256KB Flash/64KB RAM, 11 TIMs, 1 ADC, 11 comm. interfaces Datasheet - production data Features • Core: ARM® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 84 MHz, memory protection unit, 105 DMIPS/ 1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions • Memories – Up to 256 Kbytes of Flash memory – Up to 64 Kbytes of SRAM • Clock, reset and supply management – 1.7 V (PDR OFF) or 1.8 V (PDR ON) to 3.6 V application supply and I/Os – POR, PDR, PVD and BOR – 4-to-26 MHz crystal oscillator – Internal 16 MHz factory-trimmed RC – 32 kHz oscillator for RTC with calibration – Internal 32 kHz RC with calibration • Power consumption – Run: 128 µA/MHz (peripheral off) – Stop (Flash in Stop mode, fast wakeup time): 42 µA typ @ 25 °C; 65 µA max @25 °C – Stop (Flash in Deep power down mode, slow wakeup time): down to 10 µA typ@ 25 °C; 28 µA max @25 °C – Standby: 2.4 µA @25 °C / 1.7 V without RTC; 12 µA @85 °C @1.7 V – VBAT supply for RTC: 1 µA @25 °C • 1×12-bit, 2.4 MSPS A/D converter: up to 16 channels • General-purpose DMA: 16-stream DMA controllers with FIFOs and burst support • Up to 11 timers: up to six 16-bit, two 32-bit timers up to 84 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input, two watchdog timers (independent and window) and a SysTick timer August 2015 This is information on a product in full production. )%*$ WLCSP49 UFQFPN48 (7 × 7 mm) (2.965x2.965 mm) LQFP100 (14 × 14 mm) LQFP64 (10 × 10 mm) UFBGA100 (7 x 7 mm) • Debug mode – Serial wire debug (SWD) & JTAG interfaces – Cortex-M4 Embedded Trace Macrocell™ • Up to 81 I/O ports with interrupt capability – All IO ports 5 V tolerant – Up to 78 fast I/Os up to 42 MHz • Up to 11 communication interfaces – Up to 3 × I2C interfaces (1Mbit/s, SMBus/PMBus) – Up to 3 USARTs (2 x 10.5 Mbit/s, 1 x 5.25 Mbit/s), ISO 7816 interface, LIN, IrDA, modem control) – Up to 4 SPIs (up to 42 Mbits/s at fCPU = 84 MHz), SPI2 and SPI3 with muxed fullduplex I2S to achieve audio class accuracy via internal audio PLL or external clock – SDIO interface • Advanced connectivity – USB 2.0 full-speed device/host/OTG controller with on-chip PHY • CRC calculation unit • 96-bit unique ID • RTC: subsecond accuracy, hardware calendar Table 1. Device summary Reference Part number STM32F401xB STM32F401CB, STM32F401RB, STM32F401VB STM32F401xC STM32F401CC, STM32F401RC, STM32F401VC DocID024738 Rev 5 1/134 www.st.com STM32F401xB STM32F401xC Contents Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.1 3 Compatibility with STM32F4 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.1 ARM® Cortex®-M4 with FPU core with embedded Flash and SRAM . . . 15 3.2 Adaptive real-time memory accelerator (ART Accelerator™) . . . . . . . . . 15 3.3 Memory protection unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.4 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.5 CRC (cyclic redundancy check) calculation unit . . . . . . . . . . . . . . . . . . . 16 3.6 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.7 Multi-AHB bus matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.8 DMA controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.9 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . . 17 3.10 External interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.11 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.12 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.13 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.14 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.15 3.14.1 Internal reset ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.14.2 Internal reset OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.15.1 Regulator ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.15.2 Regulator OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.15.3 Regulator ON/OFF and internal power supply supervisor availability . . 24 3.16 Real-time clock (RTC) and backup registers . . . . . . . . . . . . . . . . . . . . . . 24 3.17 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.18 VBAT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.19 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.19.1 Advanced-control timers (TIM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.19.2 General-purpose timers (TIMx) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 DocID024738 Rev 5 2/134 4 Contents STM32F401xB STM32F401xC 3.19.3 Independent watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.19.4 Window watchdog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.19.5 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.20 Inter-integrated circuit interface (I2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 3.21 Universal synchronous/asynchronous receiver transmitters (USART) . . 28 3.22 Serial peripheral interface (SPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.23 Inter-integrated sound (I2S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.24 Audio PLL (PLLI2S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.25 Secure digital input/output interface (SDIO) . . . . . . . . . . . . . . . . . . . . . . . 30 3.26 Universal serial bus on-the-go full-speed (OTG_FS) . . . . . . . . . . . . . . . . 30 3.27 General-purpose input/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.28 Analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3.29 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.30 Serial wire JTAG debug port (SWJ-DP) . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.31 Embedded Trace Macrocell™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4 Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5 Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1 3/134 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 6.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 6.1.6 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6.1.7 Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 6.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 6.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.3.1 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.3.2 VCAP_1/VCAP_2 external capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.3.3 Operating conditions at power-up/power-down (regulator ON) . . . . . . . 61 6.3.4 Operating conditions at power-up / power-down (regulator OFF) . . . . . 62 6.3.5 Embedded reset and power control block characteristics . . . . . . . . . . . 62 DocID024738 Rev 5 STM32F401xB STM32F401xC 7 Contents 6.3.6 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 6.3.7 Wakeup time from low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 6.3.8 External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 6.3.9 Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 6.3.10 PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 6.3.11 PLL spread spectrum clock generation (SSCG) characteristics . . . . . . 82 6.3.12 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 6.3.13 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 6.3.14 Absolute maximum ratings (electrical sensitivity) . . . . . . . . . . . . . . . . . 87 6.3.15 I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 6.3.16 I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 6.3.17 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 6.3.18 TIM timer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 6.3.19 Communications interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 6.3.20 12-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 6.3.21 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 6.3.22 VBAT monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6.3.23 Embedded reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 6.3.24 SD/SDIO MMC card host interface (SDIO) characteristics . . . . . . . . . 111 6.3.25 RTC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 7.1 WLCSP49 2.965x2.965 mm package information . . . . . . . . . . . . . . . . . . . . . .114 7.2 UFQFPN48 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117 7.3 LQFP64 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120 7.4 LQFP100 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 7.5 UFBGA100 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 7.6 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 7.6.1 Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 8 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 DocID024738 Rev 5 4/134 4 List of tables STM32F401xB STM32F401xC List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. Table 17. Table 18. Table 19. Table 20. Table 21. Table 22. Table 23. Table 24. Table 25. Table 26. Table 27. Table 28. Table 29. Table 30. Table 31. Table 32. Table 33. Table 34. Table 35. Table 36. Table 37. Table 38. Table 39. Table 40. Table 41. Table 42. 5/134 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 STM32F401xB/C features and peripheral counts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Regulator ON/OFF and internal power supply supervisor availability. . . . . . . . . . . . . . . . . 24 Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Comparison of I2C analog and digital filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 USART feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 STM32F401xB/STM32F401xC pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Alternate function mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 STM32F401xB/STM32F401xC register boundary addresses . . . . . . . . . . . . . . . . . . . . . . 51 Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Features depending on the operating power supply range . . . . . . . . . . . . . . . . . . . . . . . . 60 VCAP_1/VCAP_2 operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Operating conditions at power-up / power-down (regulator ON) . . . . . . . . . . . . . . . . . . . . 61 Operating conditions at power-up / power-down (regulator OFF). . . . . . . . . . . . . . . . . . . . 62 Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 62 Typical and maximum current consumption, code with data processing (ART accelerator disabled) running from SRAM - VDD =1.8V . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 Typical and maximum current consumption, code with data processing (ART accelerator disabled) running from SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled except prefetch) running from Flash memory- VDD = 1.8 V . . . 65 Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled except prefetch) running from Flash memory - VDD = 3.3 V . . 66 Typical and maximum current consumption in run mode, code with data processing (ART accelerator disabled) running from Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . 66 Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled with prefetch) running from Flash memory . . . . . . . . . . . . . . . . 67 Typical and maximum current consumption in Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . 67 Typical and maximum current consumptions in Stop mode - VDD=1.8 V . . . . . . . . . . . . . . 68 Typical and maximum current consumption in Stop mode - VDD=3.3 V. . . . . . . . . . . . . . . 68 Typical and maximum current consumption in Standby mode - VDD=1.8 V . . . . . . . . . . . . 68 Typical and maximum current consumption in Standby mode - VDD=3.3 V . . . . . . . . . . . . 69 Typical and maximum current consumptions in VBAT mode. . . . . . . . . . . . . . . . . . . . . . . . 69 Switching output I/O current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Low-power mode wakeup timings(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 HSE 4-26 MHz oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 LSE oscillator characteristics (fLSE = 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 HSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Main PLL characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 PLLI2S (audio PLL) characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 DocID024738 Rev 5 STM32F401xB STM32F401xC Table 43. Table 44. Table 45. Table 46. Table 47. Table 48. Table 49. Table 50. Table 51. Table 52. Table 53. Table 54. Table 55. Table 56. Table 57. Table 58. Table 59. Table 60. Table 61. Table 62. Table 63. Table 64. Table 65. Table 66. Table 67. Table 68. Table 69. Table 70. Table 71. Table 72. Table 73. Table 74. Table 75. Table 76. Table 77. Table 78. Table 79. Table 80. Table 81. Table 82. Table 83. Table 84. Table 85. Table 86. Table 87. Table 88. List of tables SSCG parameters constraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 Flash memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 Flash memory programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Flash memory programming with VPP voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 Flash memory endurance and data retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 EMS characteristics for LQFP100 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 EMI characteristics for WLCSP49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 EMI characteristics for LQFP100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 I/O current injection susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 I/O static characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 Output voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 I/O AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 TIMx characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 I2C characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 SCL frequency (fPCLK1= 42 MHz, VDD = VDD_I2C = 3.3 V) . . . . . . . . . . . . . . . . . . . . . . . . . 97 SPI dynamic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 I2S dynamic characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 USB OTG FS startup time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 USB OTG FS DC electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 USB OTG FS electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 ADC accuracy at fADC = 18 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 ADC accuracy at fADC = 30 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 ADC accuracy at fADC = 36 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 ADC dynamic accuracy at fADC = 18 MHz - limited test conditions . . . . . . . . . . . . . . . . . 107 ADC dynamic accuracy at fADC = 36 MHz - limited test conditions . . . . . . . . . . . . . . . . . 107 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 VBAT monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Internal reference voltage calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Dynamic characteristics: SD / MMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 RTC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113 WLCSP49 - 0.4 mm pitch wafer level chip scale package mechanical data . . . . . . . . . . 115 WLCSP49 recommended PCB design rules (0.4 mm pitch) . . . . . . . . . . . . . . . . . . . . . . 116 UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 LQFP64 - 64-pin, 10 x 10 mm, 64-pin low-profile quad flat package mechanical data. . . 121 LQPF100- 100-pin, 14 x 14 mm, 100-pin low-profile quad flat package mechanical data 124 UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 UFBGA100 recommended PCB design rules (0.5 mm pitch BGA) . . . . . . . . . . . . . . . . . 127 Package thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131 DocID024738 Rev 5 6/134 6 List of figures STM32F401xB STM32F401xC List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Figure 20. Figure 21. Figure 22. Figure 23. Figure 24. Figure 25. Figure 26. Figure 27. Figure 28. Figure 29. Figure 30. Figure 31. Figure 32. Figure 33. Figure 34. Figure 35. Figure 36. Figure 37. Figure 38. Figure 39. Figure 40. Figure 41. Figure 42. Figure 43. Figure 44. Figure 45. Figure 46. 7/134 Compatible board design for LQFP100 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Compatible board design for LQFP64 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 STM32F401xB/STM32F401xC block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Multi-AHB matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Power supply supervisor interconnection with internal reset OFF . . . . . . . . . . . . . . . . . . . 19 PDR_ON control with internal reset OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Regulator OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Startup in regulator OFF: slow VDD slope power-down reset risen after VCAP_1/VCAP_2 stabilization. . . . . . . . . . . . . . . . . . . . . . . . . 23 Startup in regulator OFF mode: fast VDD slope power-down reset risen before VCAP_1/VCAP_2 stabilization . . . . . . . . . . . . . . . . . . . . . . . 23 STM32F401xB/STM32F401xC WLCSP49 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 STM32F401xB/STM32F401xC UFQFPN48 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 STM32F401xB/STM32F401xC LQFP64 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 STM32F401xB/STM32F401xC LQFP100 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 STM32F401xB/STM32F401xC UFBGA100 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Input voltage measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 External capacitor CEXT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Typical VBAT current consumption (LSE and RTC ON) . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Low-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 Typical application with an 8 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Typical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 ACCHSI versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 ACCLSI versus temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 PLL output clock waveforms in center spread mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 PLL output clock waveforms in down spread mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 FT I/O input characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 I2C bus AC waveforms and measurement circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 SPI timing diagram - slave mode and CPHA = 1(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 SPI timing diagram - master mode(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 I2S slave timing diagram (Philips protocol)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 I2S master timing diagram (Philips protocol)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 USB OTG FS timings: definition of data signal rise and fall time . . . . . . . . . . . . . . . . . . . 104 ADC accuracy characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108 Power supply and reference decoupling (VREF+ not connected to VDDA). . . . . . . . . . . . . 109 Power supply and reference decoupling (VREF+ connected to VDDA). . . . . . . . . . . . . . . . 110 SDIO high-speed mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 SD default mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 WLCSP49 - 0.4 mm pitch wafer level chip scale package outline . . . . . . . . . . . . . . . . . . 114 DocID024738 Rev 5 STM32F401xB STM32F401xC Figure 47. Figure 48. Figure 49. Figure 50. Figure 51. Figure 52. Figure 53. Figure 54. Figure 55. Figure 56. Figure 57. Figure 58. Figure 59. Figure 60. List of figures WLCSP49 0.4 mm pitch wafer level chip scale recommended footprint . . . . . . . . . . . . . 115 WLCSP49 marking example (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117 UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 UFQFPN48 marking example (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 LQFP64 - 64-pin, 10 x 10 mm, 64-pin low-profile quad flat package outline . . . . . . . . . . 120 LQFP64 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121 LQFP64 marking example (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122 LQFP100 - 100-pin, 14 x 14 mm, 100-pin low-profile quad flat package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123 LQFP100 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 LQPF100 marking example (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 UFGBA100 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 UFBGA100 marking example (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 DocID024738 Rev 5 8/134 8 Introduction 1 STM32F401xB STM32F401xC Introduction This datasheet provides the description of the STM32F401xB/STM32F401xC line of microcontrollers. The STM32F401xB/STM32F401xC datasheet should be read in conjunction with RM0368 reference manual which is available from the STMicroelectronics website www.st.com. It includes all information concerning Flash memory programming. For information on the Cortex-M4 core, please refer to the Cortex-M4 programming manual (PM0214) available from www.st.com. 9/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 2 Description Description The STM32F401XB/STM32F401XC devices are based on the high-performance ARM® Cortex® -M4 32-bit RISC core operating at a frequency of up to 84 MHz. Its Cortex®M4 core features a Floating point unit (FPU) single precision which supports all ARM singleprecision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security. The STM32F401xB/STM32F401xC incorporate high-speed embedded memories (up to 256 Kbytes of Flash memory, up to 64 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix. All devices offer one 12-bit ADC, a low-power RTC, six general-purpose 16-bit timers including one PWM timer for motor control, two general-purpose 32-bit timers. They also feature standard and advanced communication interfaces. • Up to three I2Cs • Up to four SPIs • Two full duplex I2Ss. To achieve audio class accuracy, the I2S peripherals can be clocked via a dedicated internal audio PLL or via an external clock to allow synchronization. • Three USARTs • SDIO interface • USB 2.0 OTG full speed interface Refer to Table 2: STM32F401xB/C features and peripheral counts for the peripherals available for each part number. The STM32F401xB/STM32F401xC operate in the –40 to +105 °C temperature range from a 1.7 (PDR OFF) to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications. These features make the STM32F401xB/STM32F401xC microcontrollers suitable for a wide range of applications: • Motor drive and application control • Medical equipment • Industrial applications: PLC, inverters, circuit breakers • Printers, and scanners • Alarm systems, video intercom, and HVAC • Home audio appliances • Mobile phone sensor hub Figure 3 shows the general block diagram of the devices. DocID024738 Rev 5 10/134 53 Description STM32F401xB STM32F401xC Table 2. STM32F401xB/C features and peripheral counts Peripherals Flash memory in Kbytes SRAM in Kbytes Timers STM32F401xB STM32F401xC 128 256 System 64 Generalpurpose 7 Advancedcontrol 1 SPI/ I2S 4/2 (full duplex) 3/2 (full duplex) Communication I2C interfaces USART SDIO 3 3 - 1 - USB OTG FS GPIOs 12-bit ADC Number of channels 36 50 81 36 50 81 1 10 16 10 16 84 MHz Operating voltage 1.7 to 3.6 V Ambient temperatures: –40 to +85 °C/–40 to +105 °C Operating temperatures 11/134 1 1 Maximum CPU frequency Package 4/2 (full duplex) 3/2 (full duplex) Junction temperature: –40 to + 125 °C WLCSP49 UFQFPN48 LQFP64 UFBGA100 LQFP100 DocID024738 Rev 5 WLCSP49 UFQFPN48 LQFP64 UFBGA100 LQFP100 STM32F401xB STM32F401xC Compatibility with STM32F4 series The STM32F401xB/STM32F401xC are fully software and feature compatible with the STM32F4 series (STM32F42x, STM32F43x, STM32F41x, STM32F405 and STM32F407) The STM32F401xB/STM32F401xC can be used as drop-in replacement of the other STM32F4 products but some slight changes have to be done on the PCB board. Figure 1. Compatible board design for LQFP100 package 670)[ 3%QRWDYDLODEOHDQ\PRUH 5HSODFHGE\9 &$3 3' 3' 3' 3' 3% 3% 3% 3% 3( 3( 3( 3( 3( 3( 3% 9&$3 966 9'' 670)670)OLQH 670)670)OLQH 670)670)OLQH 670)670)OLQH 3( 3( 3( 3( 3( 3( 3% 3% 9&$3 9'' 2.1 Description 3' 3' 3' 3' 3% 3% 3% 3% 966 9'' 966 9'' 069 DocID024738 Rev 5 12/134 53 Description STM32F401xB STM32F401xC Figure 2. Compatible board design for LQFP64 package 670)[ 3% 9&$3 9'' 3% 3% 9'' 9&$3 3$ 3$ 3$ 3$ 3$ 3$ 3& 3& 3& 3& 3% 3% 3% 3% 9'' 966 3%QRWDYDLODEOHDQ\PRUH 5HSODFHGE\9&$3 9'' 966 3$ 3$ 3$ 3$ 3$ 3$ 3& 3& 3& 3& 3% 3% 3% 3% 9'' 966 3% 3% 9&$3 966 9'' 3& 3& 3& 3$ 3$ 3& 3& 3& 3$ 3$ 670)670)OLQH 9LQFUHDVHGWRI &$3 (65RUEHORZ 966 9'' 966 9'' 069 13/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Description Figure 3. 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The timers connected to APB2 are clocked from TIMxCLK up to 84 MHz, while the timers connected to APB1 are clocked from TIMxCLK up to 42 MHz. DocID024738 Rev 5 14/134 53 Functional overview STM32F401xB STM32F401xC 3 Functional overview 3.1 ARM® Cortex®-M4 with FPU core with embedded Flash and SRAM The ARM® Cortex®-M4 with FPU processor is the latest generation of ARM processors for embedded systems. It was developed to provide a low-cost platform that meets the needs of MCU implementation, with a reduced pin count and low-power consumption, while delivering outstanding computational performance and an advanced response to interrupts. The ARM® Cortex®-M4 with FPU 32-bit RISC processor features exceptional codeefficiency, delivering the high-performance expected from an ARM core in the memory size usually associated with 8- and 16-bit devices. The processor supports a set of DSP instructions which allow efficient signal processing and complex algorithm execution. Its single precision FPU (floating point unit) speeds up software development by using metalanguage development tools, while avoiding saturation. The STM32F401xB/STM32F401xC devices are compatible with all ARM tools and software. Figure 3 shows the general block diagram of the STM32F401xB/STM32F401xC. Note: Cortex®-M4 with FPU is binary compatible with Cortex®-M3. 3.2 Adaptive real-time memory accelerator (ART Accelerator™) The ART Accelerator™ is a memory accelerator which is optimized for STM32 industrystandard ARM® Cortex®-M4 with FPU processors. It balances the inherent performance advantage of the ARM® Cortex®-M4 with FPU over Flash memory technologies, which normally requires the processor to wait for the Flash memory at higher frequencies. To release the processor full 105 DMIPS performance at this frequency, the accelerator implements an instruction prefetch queue and branch cache, which increases program execution speed from the 256-bit Flash memory. Based on CoreMark benchmark, the performance achieved thanks to the ART accelerator is equivalent to 0 wait state program execution from Flash memory at a CPU frequency up to 84 MHz. 3.3 Memory protection unit The memory protection unit (MPU) is used to manage the CPU accesses to memory to prevent one task to accidentally corrupt the memory or resources used by any other active task. This memory area is organized into up to 8 protected areas that can in turn be divided up into 8 subareas. The protection area sizes are between 32 bytes and the whole 4 gigabytes of addressable memory. The MPU is especially helpful for applications where some critical or certified code has to be protected against the misbehavior of other tasks. It is usually managed by an RTOS (realtime operating system). If a program accesses a memory location that is prohibited by the MPU, the RTOS can detect it and take action. In an RTOS environment, the kernel can dynamically update the MPU area setting, based on the process to be executed. The MPU is optional and can be bypassed for applications that do not need it. 15/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 3.4 Functional overview Embedded Flash memory The devices embed up to 256 Kbytes of Flash memory available for storing programs and data. 3.5 CRC (cyclic redundancy check) calculation unit The CRC (cyclic redundancy check) calculation unit is used to get a CRC code from a 32-bit data word and a fixed generator polynomial. Among other applications, CRC-based techniques are used to verify data transmission or storage integrity. In the scope of the EN/IEC 60335-1 standard, they offer a means of verifying the Flash memory integrity. The CRC calculation unit helps compute a software signature during runtime, to be compared with a reference signature generated at link-time and stored at a given memory location. 3.6 Embedded SRAM All devices embed: • Multi-AHB bus matrix The 32-bit multi-AHB bus matrix interconnects all the masters (CPU, DMAs) and the slaves (Flash memory, RAM, AHB and APB peripherals) and ensures a seamless and efficient operation even when several high-speed peripherals work simultaneously. Figure 4. Multi-AHB matrix 6 6 6 6 '0$B3 *3 '0$ '0$B0(0 '0$B0(0 '0$B3, 6EXV *3 '0$ 6 0 ,&2'( 0 '&2'( $&&(/ 6 'EXV $50 &RUWH[0 ,EXV 3.7 Up to 64 Kbytes of system SRAM which can be accessed (read/write) at CPU clock speed with 0 wait states )ODVK 0 65$0 0 $+% SHULSK $3% 0 $+% SHULSK $3% %XVPDWUL[6 069 DocID024738 Rev 5 16/134 53 Functional overview 3.8 STM32F401xB STM32F401xC DMA controller (DMA) The devices feature two general-purpose dual-port DMAs (DMA1 and DMA2) with 8 streams each. They are able to manage memory-to-memory, peripheral-to-memory and memory-to-peripheral transfers. They feature dedicated FIFOs for APB/AHB peripherals, support burst transfer and are designed to provide the maximum peripheral bandwidth (AHB/APB). The two DMA controllers support circular buffer management, so that no specific code is needed when the controller reaches the end of the buffer. The two DMA controllers also have a double buffering feature, which automates the use and switching of two memory buffers without requiring any special code. Each stream is connected to dedicated hardware DMA requests, with support for software trigger on each stream. Configuration is made by software and transfer sizes between source and destination are independent. The DMA can be used with the main peripherals: 3.9 • SPI and I2S • I2C • USART • General-purpose, basic and advanced-control timers TIMx • SD/SDIO/MMC host interface • ADC Nested vectored interrupt controller (NVIC) The devices embed a nested vectored interrupt controller able to manage 16 priority levels, and handle up to 62 maskable interrupt channels plus the 16 interrupt lines of the Cortex®-M4 with FPU. • Closely coupled NVIC gives low-latency interrupt processing • Interrupt entry vector table address passed directly to the core • Allows early processing of interrupts • Processing of late arriving, higher-priority interrupts • Support tail chaining • Processor state automatically saved • Interrupt entry restored on interrupt exit with no instruction overhead This hardware block provides flexible interrupt management features with minimum interrupt latency. 3.10 External interrupt/event controller (EXTI) The external interrupt/event controller consists of 21 edge-detector lines used to generate interrupt/event requests. Each line can be independently configured to select the trigger event (rising edge, falling edge, both) and can be masked independently. A pending register maintains the status of the interrupt requests. The EXTI can detect an external line with a pulse width shorter than the Internal APB2 clock period. Up to 81 GPIOs can be connected to the 16 external interrupt lines. 17/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 3.11 Functional overview Clocks and startup On reset the 16 MHz internal RC oscillator is selected as the default CPU clock. The 16 MHz internal RC oscillator is factory-trimmed to offer 1% accuracy at 25 °C. The application can then select as system clock either the RC oscillator or an external 4-26 MHz clock source. This clock can be monitored for failure. If a failure is detected, the system automatically switches back to the internal RC oscillator and a software interrupt is generated (if enabled). This clock source is input to a PLL thus allowing to increase the frequency up to 84 MHz. Similarly, full interrupt management of the PLL clock entry is available when necessary (for example if an indirectly used external oscillator fails). Several prescalers allow the configuration of the two AHB buses, the high-speed APB (APB2) and the low-speed APB (APB1) domains. The maximum frequency of the two AHB buses is 84 MHz while the maximum frequency of the high-speed APB domains is 84 MHz. The maximum allowed frequency of the low-speed APB domain is 42 MHz. The devices embed a dedicated PLL (PLLI2S) which allows to achieve audio class performance. In this case, the I2S master clock can generate all standard sampling frequencies from 8 kHz to 192 kHz. 3.12 Boot modes At startup, boot pins are used to select one out of three boot options: • Boot from user Flash • Boot from system memory • Boot from embedded SRAM The boot loader is located in system memory. It is used to reprogram the Flash memory by using either USART1(PA9/10), USART2(PD5/6), USB OTG FS in device mode (PA11/12) through DFU (device firmware upgrade), I2C1(PB6/7), I2C2(PB10/3), I2C3(PA8/PB4), SPI1(PA4/5/6/7), SPI2(PB12/13/14/15) or SPI3(PA15, PC10/11/12). For more detailed information on the bootloader, refer to Application Note: AN2606, STM32™ microcontroller system memory boot mode. 3.13 Power supply schemes • VDD = 1.7 to 3.6 V: external power supply for I/Os with the internal supervisor (POR/PDR) disabled, provided externally through VDD pins. Requires the use of an external power supply supervisor connected to the VDD and PDR_ON pins. • VDD = 1.8 to 3.6 V: external power supply for I/Os and the internal regulator (when enabled), provided externally through VDD pins. • VSSA, VDDA = 1.7 to 3.6 V: external analog power supplies for ADC, Reset blocks, RCs and PLL. VDDA and VSSA must be connected to VDD and VSS, respectively, with decoupling technique. • VBAT = 1.65 to 3.6 V: power supply for RTC, external clock 32 kHz oscillator and backup registers (through power switch) when VDD is not present. Refer to Figure 18: Power supply scheme for more details. DocID024738 Rev 5 18/134 53 Functional overview STM32F401xB STM32F401xC 3.14 Power supply supervisor 3.14.1 Internal reset ON This feature is available for VDD operating voltage range 1.8 V to 3.6 V. The internal power supply supervisor is enabled by holding PDR_ON high. The device has an integrated power-on reset (POR) / power-down reset (PDR) circuitry coupled with a Brownout reset (BOR) circuitry. At power-on, POR is always active, and ensures proper operation starting from 1.8 V. After the 1.8 V POR threshold level is reached, the option byte loading process starts, either to confirm or modify default thresholds, or to disable BOR permanently. Three BOR thresholds are available through option bytes. The device remains in reset mode when VDD is below a specified threshold, VPOR/PDR or VBOR, without the need for an external reset circuit. The device also features an embedded programmable voltage detector (PVD) that monitors the VDD/VDDA power supply and compares it to the VPVD threshold. An interrupt can be generated when VDD/VDDA drops below the VPVD threshold and/or when VDD/VDDA is higher than the VPVD threshold. The interrupt service routine can then generate a warning message and/or put the MCU into a safe state. The PVD is enabled by software. 3.14.2 Internal reset OFF This feature is available only on packages featuring the PDR_ON pin. The internal power-on reset (POR) / power-down reset (PDR) circuitry is disabled by setting the PDR_ON pin to low. An external power supply supervisor should monitor VDD and should maintain the device in reset mode as long as VDD is below a specified threshold. PDR_ON should be connected to this external power supply supervisor. Refer to Figure 5: Power supply supervisor interconnection with internal reset OFF. Figure 5. Power supply supervisor interconnection with internal reset OFF(1) ([WHUQDO9''SRZHUVXSSO\VXSHUYLVRU ([WUHVHWFRQWUROOHUDFWLYHZKHQ 9''9 3'5B21 1567 $SSOLFDWLRQUHVHW VLJQDORSWLRQDO 9'' 069 1. The PRD_ON pin is only available on the WLCSP49 and UFBGA100 packages. 19/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Functional overview The VDD specified threshold, below which the device must be maintained under reset, is 1.7 V (see Figure 6). A comprehensive set of power-saving mode allows to design low-power applications. When the internal reset is OFF, the following integrated features are no longer supported: • The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled. • The brownout reset (BOR) circuitry must be disabled. • The embedded programmable voltage detector (PVD) is disabled. • VBAT functionality is no more available and VBAT pin should be connected to VDD. Figure 6. PDR_ON control with internal reset OFF 9 '' 3'5 9 WLPH 5HVHWE\RWKHUVRXUFHWKDQ SRZHUVXSSO\VXSHUYLVRU 1567 3'5B21 3'5B21 WLPH 069 3.15 Voltage regulator The regulator has four operating modes: • • Regulator ON – Main regulator mode (MR) – Low power regulator (LPR) – Power-down Regulator OFF DocID024738 Rev 5 20/134 53 Functional overview 3.15.1 STM32F401xB STM32F401xC Regulator ON On packages embedding the BYPASS_REG pin, the regulator is enabled by holding BYPASS_REG low. On all other packages, the regulator is always enabled. There are three power modes configured by software when the regulator is ON: • MR is used in the nominal regulation mode (With different voltage scaling in Run) In Main regulator mode (MR mode), different voltage scaling are provided to reach the best compromise between maximum frequency and dynamic power consumption. • LPR is used in the Stop modes The LP regulator mode is configured by software when entering Stop mode. • Power-down is used in Standby mode. The Power-down mode is activated only when entering in Standby mode. The regulator output is in high impedance and the kernel circuitry is powered down, inducing zero consumption. The contents of the registers and SRAM are lost. Depending on the package, one or two external ceramic capacitors should be connected on the VCAP_1 and VCAP_2 pins. The VCAP_2 pin is only available for the LQFP100 and UFBGA100 packages. All packages have the regulator ON feature. 3.15.2 Regulator OFF The Regulator OFF is available only on the UFBGA100, which features the BYPASS_REG pin. The regulator is disabled by holding BYPASS_REG high. The regulator OFF mode allows to supply externally a V12 voltage source through VCAP_1 and VCAP_2 pins. Since the internal voltage scaling is not managed internally, the external voltage value must be aligned with the targeted maximum frequency. Refer to Table 14: General operating conditions. The two 2.2 µF VCAP ceramic capacitors should be replaced by two 100 nF decoupling capacitors. Refer to Figure 18: Power supply scheme. When the regulator is OFF, there is no more internal monitoring on V12. An external power supply supervisor should be used to monitor the V12 of the logic power domain. PA0 pin should be used for this purpose, and act as power-on reset on V12 power domain. In regulator OFF mode, the following features are no more supported: 21/134 • PA0 cannot be used as a GPIO pin since it allows to reset a part of the V12 logic power domain which is not reset by the NRST pin. • As long as PA0 is kept low, the debug mode cannot be used under power-on reset. As a consequence, PA0 and NRST pins must be managed separately if the debug connection under reset or pre-reset is required. DocID024738 Rev 5 STM32F401xB STM32F401xC Functional overview Figure 7. Regulator OFF 9 ([WHUQDO9&$3BSRZHU $SSOLFDWLRQUHVHW VXSSO\VXSHUYLVRU ([WUHVHWFRQWUROOHUDFWLYH VLJQDORSWLRQDO ZKHQ9&$3B0LQ9 9'' 3$ 9'' 1567 %<3$66B5(* 9 9&$3B 9&$3B DL9 The following conditions must be respected: Note: • VDD should always be higher than VCAP_1 and VCAP_2 to avoid current injection between power domains. • If the time for VCAP_1 and VCAP_2 to reach V12 minimum value is faster than the time for VDD to reach 1.7 V, then PA0 should be kept low to cover both conditions: until VCAP_1 and VCAP_2 reach V12 minimum value and until VDD reaches 1.7 V (see Figure 8). • Otherwise, if the time for VCAP_1 and VCAP_2 to reach V12 minimum value is slower than the time for VDD to reach 1.7 V, then PA0 could be asserted low externally (see Figure 9). • If VCAP_1 and VCAP_2 go below V12 minimum value and VDD is higher than 1.7 V, then a reset must be asserted on PA0 pin. The minimum value of V12 depends on the maximum frequency targeted in the application DocID024738 Rev 5 22/134 53 Functional overview STM32F401xB STM32F401xC Figure 8. Startup in regulator OFF: slow VDD slope power-down reset risen after VCAP_1/VCAP_2 stabilization 9'' 3'5 9 9 0LQ9 9&$3B9&$3B WLPH 1567 WLPH 06Y9 1. This figure is valid whatever the internal reset mode (ON or OFF). Figure 9. Startup in regulator OFF mode: fast VDD slope power-down reset risen before VCAP_1/VCAP_2 stabilization 9'' 3'5 9 9&$3B9&$3B 9 0LQ9 1567 WLPH 3$DVVHUWHGH[WHUQDOO\ WLPH 1. This figure is valid whatever the internal reset mode (ON or OFF). 23/134 DocID024738 Rev 5 06Y9 STM32F401xB STM32F401xC 3.15.3 Functional overview Regulator ON/OFF and internal power supply supervisor availability Table 3. Regulator ON/OFF and internal power supply supervisor availability Package Regulator ON Regulator OFF Power supply supervisor ON Power supply supervisor OFF UFQFPN48 Yes No Yes No WLCSP49 Yes No Yes PDR_ON set to VDD Yes PDR_ON external control(1) LQFP64 Yes No Yes No LQFP100 Yes No Yes No Yes PDR_ON set to VDD Yes PDR_ON external control (1) UFBGA100 Yes Yes BYPASS_REG set to BYPASS_REG set to VSS VDD 1. Refer to Section 3.14: Power supply supervisor 3.16 Real-time clock (RTC) and backup registers The backup domain includes: • The real-time clock (RTC) • 20 backup registers The real-time clock (RTC) is an independent BCD timer/counter. Dedicated registers contain the second, minute, hour (in 12/24 hour), week day, date, month, year, in BCD (binarycoded decimal) format. Correction for 28, 29 (leap year), 30, and 31 day of the month are performed automatically. The RTC features a reference clock detection, a more precise second source clock (50 or 60 Hz) can be used to enhance the calendar precision. The RTC provides a programmable alarm and programmable periodic interrupts with wakeup from Stop and Standby modes. The sub-seconds value is also available in binary format. It is clocked by a 32.768 kHz external crystal, resonator or oscillator, the internal low-power RC oscillator or the high-speed external clock divided by 128. The internal low-speed RC has a typical frequency of 32 kHz. The RTC can be calibrated using an external 512 Hz output to compensate for any natural quartz deviation. Two alarm registers are used to generate an alarm at a specific time and calendar fields can be independently masked for alarm comparison. To generate a periodic interrupt, a 16-bit programmable binary auto-reload downcounter with programmable resolution is available and allows automatic wakeup and periodic alarms from every 120 µs to every 36 hours. A 20-bit prescaler is used for the time base clock. It is by default configured to generate a time base of 1 second from a clock at 32.768 kHz. The backup registers are 32-bit registers used to store 80 bytes of user application data when VDD power is not present. Backup registers are not reset by a system, a power reset, or when the device wakes up from the Standby mode (see Section 3.17: Low-power modes). Additional 32-bit registers contain the programmable alarm subseconds, seconds, minutes, hours, day, and date. DocID024738 Rev 5 24/134 53 Functional overview STM32F401xB STM32F401xC The RTC and backup registers are supplied through a switch that is powered either from the VDD supply when present or from the VBAT pin. 3.17 Low-power modes The devices support three low-power modes to achieve the best compromise between low power consumption, short startup time and available wakeup sources: • Sleep mode In Sleep mode, only the CPU is stopped. All peripherals continue to operate and can wake up the CPU when an interrupt/event occurs. • Stop mode The Stop mode achieves the lowest power consumption while retaining the contents of SRAM and registers. All clocks in the 1.2 V domain are stopped, the PLL, the HSI RC and the HSE crystal oscillators are disabled. The voltage regulator can also be put either in normal or in low-power mode. The device can be woken up from the Stop mode by any of the EXTI line (the EXTI line source can be one of the 16 external lines, the PVD output, the RTC alarm/ wakeup/ tamper/ time stamp events). • Standby mode The Standby mode is used to achieve the lowest power consumption. The internal voltage regulator is switched off so that the entire 1.2 V domain is powered off. The PLL, the HSI RC and the HSE crystal oscillators are also switched off. After entering Standby mode, the SRAM and register contents are lost except for registers in the backup domain when selected. The device exits the Standby mode when an external reset (NRST pin), an IWDG reset, a rising edge on the WKUP pin, or an RTC alarm/ wakeup/ tamper/time stamp event occurs. Standby mode is not supported when the embedded voltage regulator is bypassed and the 1.2 V domain is controlled by an external power. 3.18 VBAT operation The VBAT pin allows to power the device VBAT domain from an external battery, an external super-capacitor, or from VDD when no external battery and an external super-capacitor are present. VBAT operation is activated when VDD is not present. The VBAT pin supplies the RTC and the backup registers. Note: 25/134 When the microcontroller is supplied from VBAT, external interrupts and RTC alarm/events do not exit it from VBAT operation. When PDR_ON pin is not connected to VDD (internal Reset OFF), the VBAT functionality is no more available and VBAT pin should be connected to VDD. DocID024738 Rev 5 STM32F401xB STM32F401xC 3.19 Functional overview Timers and watchdogs The devices embed one advanced-control timer, seven general-purpose timers and two watchdog timers. All timer counters can be frozen in debug mode. Table 4 compares the features of the advanced-control and general-purpose timers. Table 4. Timer feature comparison Timer type Advanced -control Timer TIM1 16-bit Any Up, integer Down, between 1 Up/down and 65536 Yes 4 Yes 84 84 32-bit Any Up, integer Down, between 1 Up/down and 65536 Yes 4 No 42 84 16-bit Any Up, integer Down, between 1 Up/down and 65536 Yes 4 No 42 84 16-bit Up Any integer between 1 and 65536 No 2 No 84 84 Up Any integer between 1 and 65536 No 1 No 84 84 TIM2, TIM5 TIM3, TIM4 General purpose TIM9 TIM10, TIM11 3.19.1 Max. Max. DMA Capture/ Complemen- interface timer request compare tary output clock clock generation channels (MHz) (MHz) Counter Counter Prescaler resolution type factor 16-bit Advanced-control timers (TIM1) The advanced-control timer (TIM1) can be seen as three-phase PWM generators multiplexed on 4 independent channels. It has complementary PWM outputs with programmable inserted dead times. It can also be considered as a complete generalpurpose timer. Its 4 independent channels can be used for: • Input capture • Output compare • PWM generation (edge- or center-aligned modes) • One-pulse mode output DocID024738 Rev 5 26/134 53 Functional overview STM32F401xB STM32F401xC If configured as standard 16-bit timers, it has the same features as the general-purpose TIMx timers. If configured as a 16-bit PWM generator, it has full modulation capability (0100%). The advanced-control timer can work together with the TIMx timers via the Timer Link feature for synchronization or event chaining. TIM1 supports independent DMA request generation. 3.19.2 General-purpose timers (TIMx) There are seven synchronizable general-purpose timers embedded in the STM32F401xB/STM32F401xC (see Table 4 for differences). • TIM2, TIM3, TIM4, TIM5 The STM32F401xB/STM32F401xC devices are 4 full-featured general-purpose timers: TIM2, TIM5, TIM3, and TIM4.The TIM2 and TIM5 timers are based on a 32-bit autoreload up/downcounter and a 16-bit prescaler. The TIM3 and TIM4 timers are based on a 16-bit auto-reload up/downcounter and a 16-bit prescaler. They all feature four independent channels for input capture/output compare, PWM or one-pulse mode output. This gives up to 16 input capture/output compare/PWMs on the largest packages. The TIM2, TIM3, TIM4, TIM5 general-purpose timers can work together, or with the other general-purpose timers and the advanced-control timers TIM1 and TIM8 via the Timer Link feature for synchronization or event chaining. Any of these general-purpose timers can be used to generate PWM outputs. TIM2, TIM3, TIM4, TIM5 all have independent DMA request generation. They are capable of handling quadrature (incremental) encoder signals and the digital outputs from 1 to 4 hall-effect sensors. • TIM9, TIM10 and TIM11 These timers are based on a 16-bit auto-reload upcounter and a 16-bit prescaler. TIM10 and TIM11 feature one independent channel, whereas TIM9 has two independent channels for input capture/output compare, PWM or one-pulse mode output. They can be synchronized with the TIM2, TIM3, TIM4, TIM5 full-featured general-purpose timers. They can also be used as simple time bases. 3.19.3 Independent watchdog The independent watchdog is based on a 12-bit downcounter and 8-bit prescaler. It is clocked from an independent 32 kHz internal RC and as it operates independently from the main clock, it can operate in Stop and Standby modes. It can be used either as a watchdog to reset the device when a problem occurs, or as a free-running timer for application timeout management. It is hardware- or software-configurable through the option bytes. 3.19.4 Window watchdog The window watchdog is based on a 7-bit downcounter that can be set as free-running. It can be used as a watchdog to reset the device when a problem occurs. It is clocked from the main clock. It has an early warning interrupt capability and the counter can be frozen in debug mode. 27/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 3.19.5 Functional overview SysTick timer This timer is dedicated to real-time operating systems, but could also be used as a standard downcounter. It features: 3.20 • A 24-bit downcounter • Autoreload capability • Maskable system interrupt generation when the counter reaches 0 • Programmable clock source. Inter-integrated circuit interface (I2C) Up to three I2C bus interfaces can operate in multimaster and slave modes. They can support the standard (up to 100 kHz) and fast (up to 400 kHz) modes. The I2C bus frequency can be increased up to 1 MHz. For more details about the complete solution, please contact your local ST sales representative.They also support the 7/10-bit addressing mode and the 7-bit dual addressing mode (as slave). A hardware CRC generation/verification is embedded. They can be served by DMA and they support SMBus 2.0/PMBus. The devices also include programmable analog and digital noise filters (see Table 5). Table 5. Comparison of I2C analog and digital filters Pulse width of suppressed spikes 3.21 Analog filter Digital filter ≥ 50 ns Programmable length from 1 to 15 I2C peripheral clocks Universal synchronous/asynchronous receiver transmitters (USART) The devices embed three universal synchronous/asynchronous receiver transmitters (USART1, USART2 and USART6). These three interfaces provide asynchronous communication, IrDA SIR ENDEC support, multiprocessor communication mode, single-wire half-duplex communication mode and have LIN Master/Slave capability. The USART1 and USART6 interfaces are able to communicate at speeds of up to 10.5 Mbit/s. The USART2 interface communicates at up to 5.25 bit/s. USART1 and USART2 also provide hardware management of the CTS and RTS signals, Smart Card mode (ISO 7816 compliant) and SPI-like communication capability. All interfaces can be served by the DMA controller. DocID024738 Rev 5 28/134 53 Functional overview STM32F401xB STM32F401xC Table 6. USART feature comparison Max. baud Max. baud USART Standard Modem SPI Smartcard rate in Mbit/s rate in Mbit/s APB LIN irDA name features (RTS/CTS) master (ISO 7816) (oversampling (oversampling mapping by 16) by 8) USART1 X X X X X X 5.25 10.5 APB2 (max. 84 MHz) USART2 X X X X X X 2.62 5.25 APB1 (max. 42 MHz) USART6 X N.A X X X X 5.25 10.5 APB2 (max. 84 MHz) 3.22 Serial peripheral interface (SPI) The devices feature up to four SPIs in slave and master modes in full-duplex and simplex communication modes. SPI1 and SPI4 can communicate at up to 42 Mbit/s, SPI2 and SPI3 can communicate at up to 21 Mbit/s. The 3-bit prescaler gives 8 master mode frequencies and the frame is configurable to 8 bits or 16 bits. The hardware CRC generation/verification supports basic SD Card/MMC modes. All SPIs can be served by the DMA controller. The SPI interface can be configured to operate in TI mode for communications in master mode and slave mode. 3.23 Inter-integrated sound (I2S) Two standard I2S interfaces (multiplexed with SPI2 and SPI3) are available. They can be operated in master or slave mode, in full duplex and simplex communication modes and can be configured to operate with a 16-/32-bit resolution as an input or output channel. Audio sampling frequencies from 8 kHz up to 192 kHz are supported. When either or both of the I2S interfaces is/are configured in master mode, the master clock can be output to the external DAC/CODEC at 256 times the sampling frequency. All I2Sx can be served by the DMA controller. 3.24 Audio PLL (PLLI2S) The devices feature an additional dedicated PLL for audio I2S application. It allows to achieve error-free I2S sampling clock accuracy without compromising on the CPU performance. The PLLI2S configuration can be modified to manage an I2S sample rate change without disabling the main PLL (PLL) used for the CPU. The audio PLL can be programmed with very low error to obtain sampling rates ranging from 8 kHz to 192 kHz. In addition to the audio PLL, a master clock input pin can be used to synchronize the I2S flow with an external PLL (or Codec output). 29/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 3.25 Functional overview Secure digital input/output interface (SDIO) An SD/SDIO/MMC host interface is available, that supports MultiMediaCard System Specification Version 4.2 in three different databus modes: 1-bit (default), 4-bit and 8-bit. The interface allows data transfer at up to 48 MHz, and is compliant with the SD Memory Card Specification Version 2.0. The SDIO Card Specification Version 2.0 is also supported with two different databus modes: 1-bit (default) and 4-bit. The current version supports only one SD/SDIO/MMC4.2 card at any one time and a stack of MMC4.1 or previous. In addition to SD/SDIO/MMC, this interface is fully compliant with the CE-ATA digital protocol Rev1.1. 3.26 Universal serial bus on-the-go full-speed (OTG_FS) The devices embed an USB OTG full-speed device/host/OTG peripheral with integrated transceivers. The USB OTG FS peripheral is compliant with the USB 2.0 specification and with the OTG 1.0 specification. It has software-configurable endpoint setting and supports suspend/resume. The USB OTG full-speed controller requires a dedicated 48 MHz clock that is generated by a PLL connected to the HSE oscillator. The major features are: 3.27 • Combined Rx and Tx FIFO size of 320 × 35 bits with dynamic FIFO sizing • Supports the session request protocol (SRP) and host negotiation protocol (HNP) • 4 bidirectional endpoints • 8 host channels with periodic OUT support • HNP/SNP/IP inside (no need for any external resistor) • For OTG/Host modes, a power switch is needed in case bus-powered devices are connected General-purpose input/outputs (GPIOs) Each of the GPIO pins can be configured by software as output (push-pull or open-drain, with or without pull-up or pull-down), as input (floating, with or without pull-up or pull-down) or as peripheral alternate function. Most of the GPIO pins are shared with digital or analog alternate functions. All GPIOs are high-current-capable and have speed selection to better manage internal noise, power consumption and electromagnetic emission. The I/O configuration can be locked if needed by following a specific sequence in order to avoid spurious writing to the I/Os registers. Fast I/O handling allowing maximum I/O toggling up to 84 MHz. 3.28 Analog-to-digital converter (ADC) One 12-bit analog-to-digital converter is embedded and shares up to 16 external channels, performing conversions in the single-shot or scan mode. In scan mode, automatic conversion is performed on a selected group of analog inputs. DocID024738 Rev 5 30/134 53 Functional overview STM32F401xB STM32F401xC The ADC can be served by the DMA controller. An analog watchdog feature allows very precise monitoring of the converted voltage of one, some or all selected channels. An interrupt is generated when the converted voltage is outside the programmed thresholds. To synchronize A/D conversion and timers, the ADCs could be triggered by any of TIM1, TIM2, TIM3, TIM4 or TIM5 timer. 3.29 Temperature sensor The temperature sensor has to generate a voltage that varies linearly with temperature. The conversion range is between 1.7 V and 3.6 V. The temperature sensor is internally connected to the ADC_IN18 input channel which is used to convert the sensor output voltage into a digital value. Refer to the reference manual for additional information. As the offset of the temperature sensor varies from chip to chip due to process variation, the internal temperature sensor is mainly suitable for applications that detect temperature changes instead of absolute temperatures. If an accurate temperature reading is needed, then an external temperature sensor part should be used. 3.30 Serial wire JTAG debug port (SWJ-DP) The ARM SWJ-DP interface is embedded, and is a combined JTAG and serial wire debug port that enables either a serial wire debug or a JTAG probe to be connected to the target. Debug is performed using 2 pins only instead of 5 required by the JTAG (JTAG pins could be re-use as GPIO with alternate function): the JTAG TMS and TCK pins are shared with SWDIO and SWCLK, respectively, and a specific sequence on the TMS pin is used to switch between JTAG-DP and SW-DP. 3.31 Embedded Trace Macrocell™ The ARM Embedded Trace Macrocell provides a greater visibility of the instruction and data flow inside the CPU core by streaming compressed data at a very high rate from the STM32F401xB/STM32F401xC through a small number of ETM pins to an external hardware trace port analyzer (TPA) device. The TPA is connected to a host computer using any high-speed channel available. Real-time instruction and data flow activity can be recorded and then formatted for display on the host computer that runs the debugger software. TPA hardware is commercially available from common development tool vendors. The Embedded Trace Macrocell operates with third party debugger software tools. 31/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 4 Pinouts and pin description Pinouts and pin description Figure 10. STM32F401xB/STM32F401xC WLCSP49 pinout $ 3$ 3$ 3% 3% %227 966 9'' % 966 9'' 3$ 3% 3% 3'5 B21 9%$7 & 3$ 3$ 3$ 3% 3% 3& 3& 26&B287 26&B,1 ' 3$ 3$ 966 3% 3& 3+ 3+ 26&B287 26&B,1 ( 3% 3% 3% 3$ 3$ 966$ 95() 1567 ) 3% 9'' 3$ 3$ 3$ 3$ 9''$ 95() * 3% 9&$3 B 3% 3% 3% 3$ 3$ 069 1. The above figure shows the package top view. DocID024738 Rev 5 32/134 53 Pinouts and pin description STM32F401xB STM32F401xC 3% 3% 3% 3% 3$ 3$ 3% 3% %227 966 9%$7 3% 9'' Figure 11. STM32F401xB/STM32F401xC UFQFPN48 pinout 9'' 3& 966 3&26&B,1 3$ 3&26&B287 3$ 3+26&B,1 3$ 3+26&B287 3$ 1567 3$ 966$95() 3$ 3% 3% 3$ 3% 3$ 3% 3$ 3$ 3$ 3$ 3% 3% 3% 3% 966 9'' 9&$3B 3$ 3$ 9''$95() 8)4)31 069 1. The above figure shows the package top view. 33/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Pinouts and pin description 3& 3&26&B,1 3$ 966 9'' 3&26&B287 3+26&B,1 3+26&B287 1567 3& 3& 3& 3& 966$95() 9''$95() 3$ 3$ 3$ /4)3 9'' 966 3$ 3$ 3$ 3$ 3$ 3$ 3& 3& 3& 3& 3% 3% 3% 3% 3$ 3$ 3$ 3$ 3& 3& 3% 3% 3% 3% 9&$3B 966 9'' 9%$7 3% 3% %227 3% 3% 3% 3% 3% 3' 3& 3& 3& 3$ 3$ 9'' 966 Figure 12. STM32F401xB/STM32F401xC LQFP64 pinout 069 1. The above figure shows the package top view. DocID024738 Rev 5 34/134 53 Pinouts and pin description STM32F401xB STM32F401xC 6$$ 633 0% 0% 0" 0" "//4 0" 0" 0" 0" 0" 0$ 0$ 0$ 0$ 0$ 0$ 0$ 0$ 0# 0# 0# 0! 0! Figure 13. STM32F401xB/STM32F401xC LQFP100 pinout ,1&0 6$$ 633 6#!0? 0! 0! 0! 0! 0! 0! 0# 0# 0# 0# 0$ 0$ 0$ 0$ 0$ 0$ 0$ 0$ 0" 0" 0" 0" 0! 633 6$$ 0! 0! 0! 0! 0# 0# 0" 0" 0" 0% 0% 0% 0% 0% 0% 0% 0% 0% 0" 6#!0? 633 6$$ 0% 0% 0% 0% 0% 6"!4 0# 0#/3#?). 0#/3#?/54 633 6$$ 0(/3#?). 0(/3#?/54 .234 0# 0# 0# 0# 6$$ 633!62%& 6$$!62%& 6$$! 0! 0! 0! -36 1. The above figure shows the package top view. 35/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Pinouts and pin description Figure 14. STM32F401xB/STM32F401xC UFBGA100 pinout $ 3( 3( 3% %227 3' 3' 3% 3% 3$ 3$ 3$ 3$ % 3( 3( 3% 3% 3% 3' 3' 3' 3' 3& 3& 3$ 3& 3( $17,B7$03 3( 9'' 3% 3' 3' 3& 9&$3 B 3$ 966 3$ 3$ 3& %<3$66B5(* 3& 3& 3& & ' ( 3& 26&B,1 3( 3& 9%$7 26&B287 ) 3+ 26&B,1 966 966 966 * 3+ 9'' 26&B287 9'' 9'' + 3& 1567 3'5B21 3' 3' 3' - 966$ 3& 3& 3' 3' 3' . 95() 3& 3$ 3$ 3& / 95() 3$ :.83 3$ 3$ 3& 3% 0 9''$ 3$ 3$ 3$ 3% 3% 3' 3% 3% 3% 3% 3( 3( 3( 3% 9&$3 B 3% 3( 3( 3( 3( 3( 3( 069 1. This figure shows the package top view DocID024738 Rev 5 36/134 53 Pinouts and pin description STM32F401xB STM32F401xC Table 7. Legend/abbreviations used in the pinout table Name Abbreviation Definition Unless otherwise specified in brackets below the pin name, the pin function during and after reset is the same as the actual pin name Pin name Pin type I/O structure Notes S Supply pin I Input only pin I/O Input/ output pin FT 5 V tolerant I/O B Dedicated BOOT0 pin NRST Bidirectional reset pin with embedded weak pull-up resistor Unless otherwise specified by a note, all I/Os are set as floating inputs during and after reset Alternate functions Functions selected through GPIOx_AFR registers Additional functions Functions directly selected/enabled through peripheral registers WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) - - - 1 B2 PE2 I/O FT - SPI4_SCK, TRACECLK, EVENTOUT - - - - 2 A1 PE3 I/O FT - TRACED0, EVENTOUT - - - - 3 B1 PE4 I/O FT - SPI4_NSS, TRACED1, EVENTOUT - - - - 4 C2 PE5 I/O FT - SPI4_MISO, TIM9_CH1, TRACED2, EVENTOUT - - - - 5 D2 PE6 I/O FT - SPI4_MOSI, TIM9_CH2, TRACED3, EVENTOUT - - - - - D3 VSS S - - - - - - - - C4 VDD S - - - - 1 B7 1 6 E2 VBAT S - - - - 2 D5 2 7 C1 PC13 37/134 Notes UQFN48 Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions Alternate functions I/O FT (2) (3) EVENTOUT, DocID024738 Rev 5 Additional functions RTC_TAMP1, RTC_OUT, RTC_TS STM32F401xB STM32F401xC Pinouts and pin description WLCSP49 LQFP64 LQFP100 UFBGA100 3 C7 3 8 D1 PC14OSC32_IN (PC14) I/O FT 4 C6 4 9 E1 PC15OSC32_OUT (PC15) I/O FT - - - 10 F2 VSS S - - - - - - - 11 G2 VDD S - - - - 5 D7 5 12 F1 PH0-OSC_IN (PH0) I/O FT (4) EVENTOUT OSC_IN 6 D6 6 13 G1 PH1OSC_OUT (PH1) I/O FT (4) EVENTOUT OSC_OUT 7 E7 7 14 H2 NRST I/O FT - EVENTOUT - - - 8 15 H1 PC0 I/O FT - EVENTOUT ADC1_IN10 - - 9 16 J2 PC1 I/O FT - EVENTOUT ADC1_IN11 - - 10 17 J3 PC2 I/O FT - SPI2_MISO, I2S2ext_SD, EVENTOUT ADC1_IN12 - - 11 18 K2 PC3 I/O FT - SPI2_MOSI/I2S2_SD, EVENTOUT ADC1_IN13 - - - 19 - VDD S - - - - 8 E6 12 20 - VSSA/VREF- S - - - - - - - - J1 VSSA S - - - - - - - - K1 VREF- S - - - - 9 - 13 - - VDDA/VREF+ S - - - - - - - 21 L1 VREF+ S - - - - - F7 - 22 M1 VDDA S - - - - 10 F6 14 23 L2 PA0 I/O FT (5) 11 G7 15 24 M2 PA1 I/O FT 12 E5 25 K3 PA2 I/O FT 16 Notes UQFN48 Pin name (function after reset)(1) Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions (continued) (2) (3) (4) (2) (3) (4) Alternate functions Additional functions EVENTOUT OSC32_IN EVENTOUT OSC32_OUT USART2_CTS, TIM2_CH1/TIM2_ETR, TIM5_CH1, EVENTOUT ADC1_IN0, WKUP - USART2_RTS, TIM2_CH2, TIM5_CH2, EVENTOUT ADC1_IN1 - USART2_TX, TIM2_CH3, TIM5_CH3, TIM9_CH1, EVENTOUT ADC1_IN2 DocID024738 Rev 5 38/134 53 Pinouts and pin description STM32F401xB STM32F401xC WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) 13 E4 17 26 L3 PA3 - - 18 27 - VSS S - - - - - - 19 28 - VDD S - - - - - - - - E3 BYPASS_ REG I FT - - - I/O FT Notes UQFN48 Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions (continued) - Alternate functions USART2_RX, TIM2_CH4, TIM5_CH4, TIM9_CH2, EVENTOUT Additional functions ADC1_IN3 14 G6 20 29 M3 PA4 I/O FT - SPI1_NSS, SPI3_NSS/I2S3_WS, USART2_CK, EVENTOUT ADC1_IN4 15 F5 21 30 K4 PA5 I/O FT - SPI1_SCK, TIM2_CH1/TIM2_ETR, EVENTOUT ADC1_IN5 16 F4 22 31 L4 PA6 I/O FT - SPI1_MISO, TIM1_BKIN, TIM3_CH1, EVENTOUT ADC1_IN6 17 F3 23 32 M4 PA7 I/O FT - SPI1_MOSI, TIM1_CH1N, TIM3_CH2, EVENTOUT ADC1_IN7 - - 24 33 K5 PC4 I/O FT - EVENTOUT ADC1_IN14 - - 25 34 L5 PC5 I/O FT - EVENTOUT ADC1_IN15 18 G5 26 35 M5 PB0 I/O FT - TIM1_CH2N, TIM3_CH3, EVENTOUT ADC1_IN8 19 G4 27 36 M6 PB1 I/O FT - TIM1_CH3N, TIM3_CH4, EVENTOUT ADC1_IN9 20 G3 28 37 L6 PB2 I/O FT - EVENTOUT BOOT1 - - - 38 M7 PE7 I/O FT - TIM1_ETR, EVENTOUT - - - - 39 L7 PE8 I/O FT - TIM1_CH1N, EVENTOUT - - - - 40 M8 PE9 I/O FT - TIM1_CH1, EVENTOUT - - - - 41 L8 PE10 I/O FT - TIM1_CH2N, EVENTOUT - - - - 42 M9 PE11 I/O FT - SPI4_NSS, TIM1_CH2, EVENTOUT - - - - 43 L9 PE12 I/O FT - SPI4_SCK, TIM1_CH3N, EVENTOUT - - - - 44 M10 PE13 I/O FT - SPI4_MISO, TIM1_CH3, EVENTOUT - 39/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Pinouts and pin description WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) - - - 45 M11 PE14 I/O FT - SPI4_MOSI, TIM1_CH4, EVENTOUT - - - - 46 M12 PE15 I/O FT - TIM1_BKIN, EVENTOUT - 21 E3 29 47 L10 PB10 I/O FT - SPI2_SCK/I2S2_CK, I2C2_SCL, TIM2_CH3, EVENTOUT - - - - - K9 PB11 I/O FT - EVENTOUT - Notes UQFN48 Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions (continued) Alternate functions Additional functions 22 G2 30 48 L11 VCAP_1 S - - - - 23 D3 31 49 F12 VSS S - - - - 24 F2 32 50 G12 VDD S - - - - 25 E2 33 51 L12 PB12 I/O FT - SPI2_NSS/I2S2_WS, I2C2_SMBA, TIM1_BKIN, EVENTOUT - 26 G1 34 52 K12 PB13 I/O FT - SPI2_SCK/I2S2_CK, TIM1_CH1N, EVENTOUT - 27 F1 35 53 K11 PB14 I/O FT - SPI2_MISO, I2S2ext_SD, TIM1_CH2N, EVENTOUT - 28 E1 36 54 K10 PB15 I/O FT - SPI2_MOSI/I2S2_SD, TIM1_CH3N, EVENTOUT RTC_REFIN - - - 55 - PD8 I/O FT - EVENTOUT - - - - 56 K8 PD9 I/O FT - EVENTOUT - - - - 57 J12 PD10 I/O FT - EVENTOUT - - - - 58 J11 PD11 I/O FT - EVENTOUT - - - - 59 J10 PD12 I/O FT - TIM4_CH1, EVENTOUT - - - - 60 H12 PD13 I/O FT - TIM4_CH2, EVENTOUT - - - - 61 H11 PD14 I/O FT - TIM4_CH3, EVENTOUT - - - - 62 H10 PD15 I/O FT - TIM4_CH4, EVENTOUT - - - 37 63 E12 PC6 I/O FT - I2S2_MCK, USART6_TX, TIM3_CH1, SDIO_D6, EVENTOUT - - - 38 64 E11 PC7 I/O FT - I2S3_MCK, USART6_RX, TIM3_CH2, SDIO_D7, EVENTOUT - DocID024738 Rev 5 40/134 53 Pinouts and pin description STM32F401xB STM32F401xC WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) - - 39 65 E10 PC8 I/O FT - USART6_CK, TIM3_CH3, SDIO_D0, EVENTOUT - - - 40 66 D12 PC9 I/O FT - I2S_CKIN, I2C3_SDA, TIM3_CH4, SDIO_D1, MCO_2, EVENTOUT - 29 D1 41 67 D11 PA8 I/O FT - I2C3_SCL, USART1_CK, TIM1_CH1, OTG_FS_SOF, MCO_1, EVENTOUT - 30 D2 42 68 D10 PA9 I/O FT - I2C3_SMBA, USART1_TX, TIM1_CH2, EVENTOUT OTG_FS_VBUS 31 C2 43 69 C12 PA10 I/O FT - USART1_RX, TIM1_CH3, OTG_FS_ID, EVENTOUT - 32 C1 44 70 B12 PA11 I/O FT - USART1_CTS, USART6_TX, TIM1_CH4, OTG_FS_DM, EVENTOUT - 33 C3 45 71 A12 PA12 I/O FT - USART1_RTS, USART6_RX, TIM1_ETR, OTG_FS_DP, EVENTOUT - 34 B3 46 72 A11 PA13 (JTMSSWDIO) I/O FT - JTMS-SWDIO, EVENTOUT - - - - 73 C11 VCAP_2 S - - - - 35 B1 47 74 F11 VSS S - - - - 36 - 48 75 G11 VDD S - - - - - B2 - - - VDD S - - - - 37 A1 49 76 A10 PA14 (JTCKSWCLK) I/O FT Notes UQFN48 Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions (continued) Alternate functions Additional functions - JTCK-SWCLK, EVENTOUT - - 38 A2 50 77 A9 PA15 (JTDI) I/O FT - JTDI, SPI1_NSS, SPI3_NSS/I2S3_WS, TIM2_CH1/TIM2_ETR, JTDI, EVENTOUT - - 51 78 B11 PC10 I/O FT - SPI3_SCK/I2S3_CK, SDIO_D2, EVENTOUT - - - 52 79 C10 PC11 I/O FT - I2S3ext_SD, SPI3_MISO, SDIO_D3, EVENTOUT - - - 53 80 B10 PC12 I/O FT - SPI3_MOSI/I2S3_SD, SDIO_CK, EVENTOUT - - - - 81 C9 PD0 I/O FT - EVENTOUT - 41/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Pinouts and pin description WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) - - - 82 B9 PD1 I/O FT - EVENTOUT - - - 54 83 C8 PD2 I/O FT - TIM3_ETR, SDIO_CMD, EVENTOUT - - - - 84 B8 PD3 I/O FT - SPI2_SCK/I2S2_CK, USART2_CTS, EVENTOUT - - - - 85 B7 PD4 I/O FT - USART2_RTS, EVENTOUT - - - - 86 A6 PD5 I/O FT - USART2_TX, EVENTOUT - - - - 87 B6 PD6 I/O FT - SPI3_MOSI/I2S3_SD, USART2_RX, EVENTOUT - - - - 88 A5 PD7 I/O FT - USART2_CK, EVENTOUT - A8 PB3 (JTDO-SWO) - JTDO-SWO, SPI1_SCK, SPI3_SCK/I2S3_CK, I2C2_SDA, TIM2_CH2, EVENTOUT - A7 PB4 (NJTRST) - NJTRST, SPI1_MISO, SPI3_MISO, I2S3ext_SD, I2C3_SDA, TIM3_CH1, EVENTOUT - - 39 40 A3 A4 55 56 89 90 I/O FT I/O FT Notes UQFN48 Pin type Pin Number I/O structure Table 8. STM32F401xB/STM32F401xC pin definitions (continued) Alternate functions Additional functions 41 B4 57 91 C5 PB5 I/O FT - SPI1_MOSI, SPI3_MOSI/I2S3_SD, I2C1_SMBA, TIM3_CH2, EVENTOUT 42 C4 58 92 B5 PB6 I/O FT - I2C1_SCL, USART1_TX, TIM4_CH1, EVENTOUT - 43 D4 59 93 B4 PB7 I/O FT - I2C1_SDA, USART1_RX, TIM4_CH2, EVENTOUT - 44 A5 60 94 A4 BOOT0 45 B5 61 95 A3 PB8 I B - - VPP I/O FT - I2C1_SCL, TIM4_CH3, TIM10_CH1, SDIO_D4, EVENTOUT - - 46 C5 62 96 B3 PB9 I/O FT - SPI2_NSS/I2S2_WS, I2C1_SDA, TIM4_CH4, TIM11_CH1, SDIO_D5, EVENTOUT - - - 97 C3 PE0 I/O FT - TIM4_ETR, EVENTOUT - - - - 98 A2 PE1 I/O FT - EVENTOUT - DocID024738 Rev 5 42/134 53 Pinouts and pin description STM32F401xB STM32F401xC Table 8. STM32F401xB/STM32F401xC pin definitions (continued) UQFN48 WLCSP49 LQFP64 LQFP100 UFBGA100 Pin name (function after reset)(1) Pin type I/O structure Notes Pin Number Alternate functions 47 A6 63 99 - VSS S - - - - - B6 - - H3 PDR_ON I FT - - - 48 A7 - VDD S - - - - 64 100 Additional functions 1. Function availability depends on the chosen device. 2. PC13, PC14 and PC15 are supplied through the power switch. Since the switch only sinks a limited amount of current (3 mA), the use of GPIOs PC13 to PC15 in output mode is limited: - The speed should not exceed 2 MHz with a maximum load of 30 pF. - These I/Os must not be used as a current source (e.g. to drive an LED). 3. Main function after the first backup domain power-up. Later on, it depends on the contents of the RTC registers even after reset (because these registers are not reset by the main reset). For details on how to manage these I/Os, refer to the RTC register description sections in the STM32F401xx reference manual. 4. FT = 5 V tolerant except when in analog mode or oscillator mode (for PC14, PC15, PH0 and PH1). 5. If the device is delivered in an UFBGA100 and the BYPASS_REG pin is set to VDD (Regulator off/internal reset ON mode), then PA0 is used as an internal Reset (active low) 43/134 DocID024738 Rev 5 AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PA0 - TIM2_CH1/ TIM2_ETR TIM5_CH1 - - - - USART2_ CTS - - - - - - - EVENT OUT PA1 - TIM2_CH2 TIM5_CH2 - - - - USART2_ RTS - - - - - - - EVENT OUT PA2 - TIM2_CH3 TIM5_CH3 TIM9_CH1 - - - USART2_ TX - - - - - - - EVENT OUT PA3 - TIM2_CH4 TIM5_CH4 TIM9_CH2 - - USART2_ RX - - - - - - - EVENT OUT PA4 - - - - - SPI1_NSS SPI3_NSS/ I2S3_WS USART2_ CK - - - - - - - EVENT OUT PA5 - TIM2_CH1/ TIM2_ETR - - - SPI1_SCK - - - - - - - - - EVENT OUT PA6 - TIM1_BKIN TIM3_CH1 - - SPI1_ MISO - - - - - - - - - EVENT OUT PA7 - TIM1_CH1N TIM3_CH2 - - SPI1_ MOSI - - - - - - PA8 MCO_1 TIM1_CH1 - - I2C3_SCL - - USART1_ CK - - OTG_FS_ SOF - PA9 - TIM1_CH2 - - I2C3_ SMBA - - USART1_ TX - - OTG_FS_ VBUS - - -- - EVENT OUT PA10 - TIM1_CH3 - - - - - USART1_ RX - - OTG_FS_I D - - - - EVENT OUT PA11 - TIM1_CH4 - - - - - USART1_ CTS USART6_ TX - OTG_FS_ DM - - - - EVENT OUT PA12 - TIM1_ETR - - - - - USART1_ RTS USART6_ RX - OTG_FS_ DP - - - - EVENT OUT PA13 JTMS_ SWDIO - - - - - - - - - - - - - - EVENT OUT PA14 JTCK_ SWCLK - - - - - - - - - - - - - - EVENT OUT PA15 JTDI TIM2_CH1/ TIM2_ETR - - - SPI1_NSS SPI3_NSS/ I2S3_WS - - - - - - - - EVENT OUT DocID024738 Rev 5 Port A Port SDIO - - - EVENT OUT - - - EVENT OUT 44/134 Pinouts and pin description AF00 STM32F401xB STM32F401xC Table 9. Alternate function mapping AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PB0 - TIM1_CH2N TIM3_CH3 - - - - - - - - - - - - EVENT OUT PB1 - TIM1_CH3N TIM3_CH4 - - - - - - - - - - - - EVENT OUT PB2 - - - - - - - - - - - - - - - EVENT OUT PB3 JTDOSWO TIM2_CH2 - - - SPI1_SCK SPI3_SCK/ I2S3_CK - - I2C2_SDA - - - - - EVENT OUT PB4 JTRST - TIM3_CH1 - - SPI1_ MISO SPI3_MISO I2S3ext_S D - I2C3_SDA - - - - - EVENT OUT PB5 - - TIM3_CH2 - I2C1_ SMBA SPI1 _MOSI SPI3_MOSI/ I2S3_SD - - - - - - - - EVENT OUT PB6 - - TIM4_CH1 - I2C1_SCL - - USART1_ TX - - - - - - - EVENT OUT PB7 - - TIM4_CH2 - I2C1_SDA - - USART1_ RX - - - - - - - EVENT OUT PB8 - - TIM4_CH3 TIM10_CH1 I2C1_SCL - - - - - - - SDIO_ D4 - - EVENT OUT PB9 - - TIM4_CH4 TIM11_CH1 I2C1_SDA SPI2_NSS/I 2S2_WS - - - - - - SDIO_ D5 - - EVENT OUT PB10 - TIM2_CH3 - - I2C2_SCL SPI2_SCK/I 2S2_CK - - - - - - - - - EVENT OUT PB12 - TIM1_BKIN - - I2C2_ SMBA SPI2_NSS/I 2S2_WS - - - - - - - - - EVENT OUT PB13 - TIM1_CH1N - - - SPI2_SCK/I 2S2_CK - - - - - - - - - EVENT OUT PB14 - TIM1_CH2N - - - SPI2_MISO I2S2ext_SD - - - - - - - - EVENT OUT PB15 RTC_ REFN TIM1_CH3N - - - SPI2_MOSI /I2S2_SD - - - - - - - - - EVENT OUT DocID024738 Rev 5 Port B Port SDIO STM32F401xB STM32F401xC AF00 Pinouts and pin description 45/134 Table 9. Alternate function mapping (continued) AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PC0 - - - - - - - - - - - - - - - EVENT OUT PC1 - - - - - - - - - - - - - - - EVENT OUT PC2 - - - - - SPI2_ MISO I2S2ext_SD - - - - - - - - EVENT OUT PC3 - - - - - SPI2_MOSI /I2S2_SD - - - - - - - - - EVENT OUT PC4 - - - - - - - - - - - - - - - EVENT OUT PC5 - - - - - - - - - - - - - - - EVENT OUT PC6 - -- TIM3_CH1 - - I2S2_MCK - - USART6_ TX - - - SDIO_ D6 - - EVENT OUT PC7 - TIM3_CH2 - - - I2S3_MCK - USART6_ RX - - - SDIO_ D7 - - EVENT OUT PC8 - - TIM3_CH3 - - - - - USART6_ CK - - - SDIO_ D0 - - EVENT OUT PC9 MCO_2 - TIM3_CH4 - I2C3_SDA I2S_CKIN - - - - - - SDIO_ D1 - - EVENT OUT PC10 - - - - - - SPI3_SCK/ I2S3_CK - - - - - SDIO_ D2 - - EVENT OUT PC11 - - - - - I2S3ext_ SD SPI3_MISO - - - - - SDIO_ D3 - - EVENT OUT PC12 - - - - - - SPI3_MOSI/ I2S3_SD - - - - - SDIO_ CK - - EVENT OUT PC13 - - - - - - - - - - - - - - - EVENT OUT PC14 - - - - - - - - - - - - - - - EVENT OUT PC15 - - - - - - - - - - - - - - - EVENT OUT DocID024738 Rev 5 Port C Port SDIO 46/134 Pinouts and pin description AF00 STM32F401xB STM32F401xC Table 9. Alternate function mapping (continued) AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PD0 - - - - - - - - - - - - - - - EVENT OUT PD1 - - - - - - - - - - - - - - - EVENT OUT PD2 - - TIM3_ETR - - - - - - - - - SDIO_ CMD - - EVENT OUT PD3 - - - - - SPI2_SCK/ I2S2_CK - USART2_ CTS -- - - - - - - EVENT OUT PD4 - - - - - - - USART2_ RTS - - - - - - EVENT OUT PD5 - - - - - - - USART2_ TX - - - - - - - EVENT OUT PD6 - - - - - SPI3_MOSI /I2S3_SD - USART2_ RX - - - - - - - EVENT OUT PD7 - - - - - - - USART2_ CK - - - - - - - EVENT OUT PD8 - - - - - - - - - - - - - - - EVENT OUT PD9 - - - - - - - - - - - - - - - EVENT OUT PD10 - - - - - - - - - - - - - - - EVENT OUT PD11 - - - - - - - - - - - - - - - EVENT OUT PD12 - - TIM4_CH1 - - - - - - - - - - - - EVENT OUT PD13 - - TIM4_CH2 - - - - - - - - - - - - EVENT OUT PD14 - - TIM4_CH3 - - - - - - - - - - - - EVENT OUT PD15 - - TIM4_CH4 - - - - - - - - - - - - EVENT OUT DocID024738 Rev 5 Port D Port SDIO STM32F401xB STM32F401xC AF00 Pinouts and pin description 47/134 Table 9. Alternate function mapping (continued) AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PE0 - - TIM4_ETR - - - - - - - - - - - - EVENT OUT PE1 - TIM1_CH2N - - - - - - - - - - - - - EVENT OUT PE2 TRACECL K - - - - SPI4_SCK - - - - - - - - - EVENT OUT PE3 TRACED0 - - - - - - - - - - - - - - EVENT OUT PE4 TRACED1 - - - - SPI4_NSS - - - - - - - - - EVENT OUT PE5 TRACED2 - - TIM9_CH1 - SPI4_MISO - - - - - - - - - EVENT OUT PE6 TRACED3 - - TIM9_CH2 - SPI4_MOSI - - - - - - - - - EVENT OUT PE7 - TIM1_ETR - - - - - - - - - - - - - EVENT OUT PE8 - TIM1_CH1N - - - - - - - - - - - - - EVENT OUT PE9 - TIM1_CH1 - - - - - - - - - - - - - EVENT OUT PE10 - TIM1_CH2N - - - - - - - - - - - - - EVENT OUT PE11 - TIM1_CH2 - - - SPI4_NSS - - - - - - - - - EVENT OUT PE12 - TIM1_CH3N - - - SPI4_SCK - - - - - - - - - EVENT OUT PE13 - TIM1_CH3 - - - SPI4_MISO - - - - - - - - - EVENT OUT PE14 - TIM1_CH4 - - - SPI4_MOSI - - - - - - - - - EVENT OUT PE15 - TIM1_BKIN - - - - - - - - - - - - - EVENT OUT DocID024738 Rev 5 Port E Port SDIO 48/134 Pinouts and pin description AF00 STM32F401xB STM32F401xC Table 9. Alternate function mapping (continued) AF00 AF01 AF02 AF03 AF04 AF05 AF06 AF07 AF08 AF09 AF10 AF11 AF12 AF13 AF14 AF15 SYS_AF TIM1/TIM2 TIM3/ TIM4/ TIM5 TIM9/ TIM10/ TIM11 I2C1/I2C2/ I2C3 SPI1/SPI2/ I2S2/SPI3/ I2S3/SPI4 SPI2/I2S2/ SPI3/ I2S3 SPI3/I2S3/ USART1/ USART2 USART6 I2C2/ I2C3 OTG1_FS PH0 - - - - - - - - - - - - - - - EVENT OUT PH1 - - - - - - - - - - - - - - - EVENT OUT Port H Port SDIO Pinouts and pin description 49/134 Table 9. Alternate function mapping (continued) DocID024738 Rev 5 STM32F401xB STM32F401xC STM32F401xB STM32F401xC 5 Memory mapping Memory mapping The memory map is shown in Figure 15. Figure 15. Memory map 5HVHUYHG [([)))))))) &RUWH[0LQWHUQDO SHULSKHUDOV [([())))) ['))))))) 5HVHUYHG [ [)))) $+% 5HVHUYHG [)))))))) [( ['))))))) 0E\WH EORFN &RUWH[0 V LQWHUQDO SHULSKHUDOV [ [[))))))) [)) $+% 0E\WH EORFN 1RWXVHG [& [%))))))) [ 5HVHUYHG [&[)))) [%)) 5HVHUYHG [ [))))))) $3% 0E\WH EORFN 3HULSKHUDOV [ [))))))) 0E\WH EORFN 65$0 [ [))))))) 0E\WH EORFN &RGH [ 5HVHUYHG [[))))))) 65$0.%DOLDVHG E\ELWEDQGLQJ [[)))) 5HVHUYHG [)))&[))))))) 2SWLRQE\WHV [)))&[)))& 5HVHUYHG 6\VWHPPHPRU\ [)))[)))$) [ [[)))) [)) [)))$[)))%))) 5HVHUYHG [[))()))) )ODVKPHPRU\ [[)))) 5HVHUYHG [[)))))) $OLDVHGWR)ODVKV\VWHP PHPRU\RU65$0GHSHQGLQJ RQWKH%227SLQV 5HVHUYHG $3% [[)))) [ 069 DocID024738 Rev 5 50/134 53 Memory mapping STM32F401xB STM32F401xC Table 10. STM32F401xB/STM32F401xC register boundary addresses Bus ® Cortex -M4 AHB2 AHB1 51/134 Boundary address Peripheral 0xE010 0000 - 0xFFFF FFFF Reserved 0xE000 0000 - 0xE00F FFFF Cortex-M4 internal peripherals 0x5004 0000 - 0xDFFF FFFF Reserved 0x5000 0000 - 0x5003 FFFF USB OTG FS 0x4002 6800 - 0x4FFF FFFF Reserved 0x4002 6400 - 0x4002 67FF DMA2 0x4002 6000 - 0x4002 63FF DMA1 0x4002 5000 - 0x4002 4FFF Reserved 0x4002 3C00 - 0x4002 3FFF Flash interface register 0x4002 3800 - 0x4002 3BFF RCC 0x4002 3400 - 0x4002 37FF Reserved 0x4002 3000 - 0x4002 33FF CRC 0x4002 2000 - 0x4002 2FFF Reserved 0x4002 1C00 - 0x4002 1FFF GPIOH 0x4002 1400 - 0x4002 1BFF Reserved 0x4002 1000 - 0x4002 13FF GPIOE 0x4002 0C00 - 0x4002 0FFF GPIOD 0x4002 0800 - 0x4002 0BFF GPIOC 0x4002 0400 - 0x4002 07FF GPIOB 0x4002 0000 - 0x4002 03FF GPIOA DocID024738 Rev 5 STM32F401xB STM32F401xC Memory mapping Table 10. STM32F401xB/STM32F401xC register boundary addresses (continued) Bus APB2 Boundary address Peripheral 0x4001 4C00- 0x4001 FFFF Reserved 0x4001 4800 - 0x4001 4BFF TIM11 0x4001 4400 - 0x4001 47FF TIM10 0x4001 4000 - 0x4001 43FF TIM9 0x4001 3C00 - 0x4001 3FFF EXTI 0x4001 3800 - 0x4001 3BFF SYSCFG 0x4001 3400 - 0x4001 37FF SPI4/I2S4 0x4001 3000 - 0x4001 33FF SPI1 0x4001 2C00 - 0x4001 2FFF SDIO 0x4001 2400 - 0x4001 2BFF Reserved 0x4001 2000 - 0x4001 23FF ADC1 0x4001 1800 - 0x4001 1FFF Reserved 0x4001 1400 - 0x4001 17FF USART6 0x4001 1000 - 0x4001 13FF USART1 0x4001 0800 - 0x4001 0FFF Reserved 0x4001 0400 - 0x4001 07FF TIM8 0x4001 0000 - 0x4001 03FF TIM1 0x4000 7400 - 0x4000 FFFF Reserved DocID024738 Rev 5 52/134 53 Memory mapping STM32F401xB STM32F401xC Table 10. STM32F401xB/STM32F401xC register boundary addresses (continued) Bus APB1 53/134 Boundary address Peripheral 0x4000 7000 - 0x4000 73FF PWR 0x4000 6000 - 0x4000 6FFF Reserved 0x4000 5C00 - 0x4000 5FFF I2C3 0x4000 5800 - 0x4000 5BFF I2C2 0x4000 5400 - 0x4000 57FF I2C1 0x4000 4800 - 0x4000 53FF Reserved 0x4000 4400 - 0x4000 47FF USART2 0x4000 4000 - 0x4000 43FF I2S3ext 0x4000 3C00 - 0x4000 3FFF SPI3 / I2S3 0x4000 3800 - 0x4000 3BFF SPI2 / I2S2 0x4000 3400 - 0x4000 37FF I2S2ext 0x4000 3000 - 0x4000 33FF IWDG 0x4000 2C00 - 0x4000 2FFF WWDG 0x4000 2800 - 0x4000 2BFF RTC & BKP Registers 0x4000 1000 - 0x4000 27FF Reserved 0x4000 0C00 - 0x4000 0FFF TIM5 0x4000 0800 - 0x4000 0BFF TIM4 0x4000 0400 - 0x4000 07FF TIM3 0x4000 0000 - 0x4000 03FF TIM2 DocID024738 Rev 5 Electrical characteristics STM32F401xB STM32F401xC 6 Electrical characteristics 6.1 Parameter conditions Unless otherwise specified, all voltages are referenced to VSS. 6.1.1 Minimum and maximum values Unless otherwise specified the minimum and maximum values are guaranteed in the worst conditions of ambient temperature, supply voltage and frequencies by tests in production on 100% of the devices with an ambient temperature at TA = 25 °C and TA = TAmax (given by the selected temperature range). Data based on characterization results, design simulation and/or technology characteristics are indicated in the table footnotes and are not tested in production. Based on characterization, the minimum and maximum values refer to sample tests and represent the mean value plus or minus three times the standard deviation (mean ±3 σ). 6.1.2 Typical values Unless otherwise specified, typical data are based on TA = 25 °C, VDD = 3.3 V (for the 1.7 V ≤ VDD ≤ 3.6 V voltage range). They are given only as design guidelines and are not tested. Typical ADC accuracy values are determined by characterization of a batch of samples from a standard diffusion lot over the full temperature range, where 95% of the devices have an error less than or equal to the value indicated (mean ±2 σ). 6.1.3 Typical curves Unless otherwise specified, all typical curves are given only as design guidelines and are not tested. 6.1.4 Loading capacitor The loading conditions used for pin parameter measurement are shown in Figure 16. Figure 16. Pin loading conditions -#5PIN #P& -36 54/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 6.1.5 Electrical characteristics Pin input voltage The input voltage measurement on a pin of the device is described in Figure 17. Figure 17. Input voltage measurement -#5PIN 6). -36 DocID024738 Rev 5 55/134 113 Electrical characteristics 6.1.6 STM32F401xB STM32F401xC Power supply scheme Figure 18. Power supply scheme 9%$7 9%$7 WR9 *3,2V ,1 9&$3B 9&$3B 9'' 966 îQ) î) /HYHOVKLIWHU 287 î) RU î) 9'' %DFNXSFLUFXLWU\ 26&.57& :DNHXSORJLF %DFNXSUHJLVWHUV 3RZHU VZLWFK ,2 /RJLF .HUQHOORJLF &38GLJLWDO 5$0 9ROWDJH UHJXODWRU )ODVKPHPRU\ %<3$66B5(* 3'5B21 9'' 9''$ 95() Q) ) 5HVHW FRQWUROOHU Q) ) 95() 95() $'& $QDORJ 5&V 3// 966$ 069 1. To connect PDR_ON pin, refer to Section 3.14: Power supply supervisor. 2. The 4.7 µF ceramic capacitor must be connected to one of the VDD pin. 3. VCAP_2 pad is only available on LQFP100 and UFBGA100 packages. 4. VDDA=VDD and VSSA=VSS. Caution: 56/134 Each power supply pair (VDD/VSS, VDDA/VSSA ...) must be decoupled with filtering ceramic capacitors as shown above. These capacitors must be placed as close as possible to, or below, the appropriate pins on the underside of the PCB to ensure good operation of the device. It is not recommended to remove filtering capacitors to reduce PCB size or cost. This might cause incorrect operation of the device. DocID024738 Rev 5 STM32F401xB STM32F401xC 6.1.7 Electrical characteristics Current consumption measurement Figure 19. Current consumption measurement scheme )$$?6"!4 6"!4 )$$ 6$$ 6$$! AI 6.2 Absolute maximum ratings Stresses above the absolute maximum ratings listed in Table 11: Voltage characteristics, Table 12: Current characteristics, and Table 13: Thermal characteristics may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. Table 11. Voltage characteristics Symbol Ratings Min Max VDD–VSS External main supply voltage (including VDDA, VDD and VBAT)(1) –0.3 4.0 Input voltage on FT pins(2) VSS–0.3 VDD+4.0 Input voltage on any other pin VSS–0.3 4.0 VSS 9.0 Variations between different VDD power pins - 50 Variations between all the different ground pins - 50 VIN Input voltage for BOOT0 |ΔVDDx| |VSSX −VSS| VESD(HBM) Electrostatic discharge voltage (human body model) Unit V mV see Section 6.3.14: Absolute maximum ratings (electrical sensitivity) 1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the permitted range. 2. VIN maximum value must always be respected. Refer to Table 12 for the values of the maximum allowed injected current. DocID024738 Rev 5 57/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 12. Current characteristics Symbol Ratings Max. ΣIVDD Total current into sum of all VDD_x power lines (source)(1) 160 Σ IVSS (1) -160 Total current out of sum of all VSS_x ground lines (sink) IVDD Maximum current into each VDD_x power line (source) (1) 100 IVSS Maximum current out of each VSS_x ground line (sink)(1) -100 IIO ΣIIO IINJ(PIN) (3) ΣIINJ(PIN) Output current sunk by any I/O and control pin 25 Output current sourced by any I/O and control pin Total output current sunk by sum of all I/O and control pins -25 (2) mA 120 Total output current sourced by sum of all I/Os and control pins(2) Injected current on FT pins Unit -120 (4) –5/+0 Injected current on NRST and B pins (4) Total injected current (sum of all I/O and control pins)(5) ±25 1. All main power (VDD, VDDA) and ground (VSS, VSSA) pins must always be connected to the external power supply, in the permitted range. 2. This current consumption must be correctly distributed over all I/Os and control pins. The total output current must not be sunk/sourced between two consecutive power supply pins referring to high pin count LQFP packages. 3. Negative injection disturbs the analog performance of the device. See note in Section 6.3.20: 12-bit ADC characteristics. 4. Positive injection is not possible on these I/Os and does not occur for input voltages lower than the specified maximum value. 5. When several inputs are submitted to a current injection, the maximum ΣIINJ(PIN) is the absolute sum of the positive and negative injected currents (instantaneous values). Table 13. Thermal characteristics Symbol TSTG TJ TLEAD Ratings Storage temperature range Maximum junction temperature Maximum lead temperature during soldering (WLCSP49, LQFP64/100, UFQFPN48, UFBGA100) Value –65 to +150 125 °C see note (1) 1. Compliant with JEDEC Std J-STD-020D (for small body, Sn-Pb or Pb assembly), the ST ECOPACK® 7191395 specification, and the European directive on Restrictions on Hazardous Substances (ROHS directive 2011/65/EU, July 2011). 58/134 DocID024738 Rev 5 Unit STM32F401xB STM32F401xC Electrical characteristics 6.3 Operating conditions 6.3.1 General operating conditions Table 14. General operating conditions Symbol fHCLK Parameter Internal AHB clock frequency Conditions Min Typ Max Power Scale3: Regulator ON, VOS[1:0] bits in PWR_CR register = 0x01 0 - 60 Power Scale2: Regulator ON, VOS[1:0] bits in PWR_CR register = 0x10 0 - 84 fPCLK1 Internal APB1 clock frequency 0 - 42 fPCLK2 Internal APB2 clock frequency 0 - 84 Standard operating voltage 1.7(1) - 3.6 Analog operating voltage (ADC limited to 1.2 M samples) 1.7(1) - 2.4 2.4 - 3.6 1.65 - 3.6 VDD VDDA (2)(3) VBAT Analog operating voltage (ADC limited to 2.4 M samples) Backup operating voltage VOS[1:0] bits in PWR_CR register = 0x01 1.08(5) 1.14 1.20(5) Max frequency 60 MHz Regulator ON: 1.2 V internal voltage on VCAP_1/VCAP_2 pins Regulator OFF: 1.2 V external voltage must be supplied on VCAP_1/VCAP_2 pins Max. frequency 60 MHz. 1.1 1.14 1.2 V12 Max. frequency 84 MHz. 1.2 1.26 1.32 Input voltage on RST and FT pins(6) 2 V ≤ VDD ≤ 3.6 V –0.3 - 5.5 VDD ≤ 2 V –0.3 - 5.2 0 - 9 UFQFPN48 - - 625 WLCSP49 - - 385 LQFP64 - - 313 LQFP100 - - 465 UFBGA100 - - 323 PD V VOS[1:0] bits in PWR_CR register = 0x10 1.20(5) 1.26 1.32(5) Max frequency 84 MHz Input voltage on BOOT0 pin Maximum allowed package power dissipation for suffix 6 and 7(7) MHz Must be the same potential as VDD(4) V12 VIN Unit DocID024738 Rev 5 mW 59/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 14. General operating conditions (continued) Symbol Parameter Conditions Typ Max Ambient temperature for 6 suffix version Maximum power dissipation –40 - 85 Low power dissipation(8) –40 - 105 Ambient temperature for 7 suffix version Maximum power dissipation –40 - 105 Low power dissipation –40 - 125 6 suffix version –40 - 105 7 suffix version –40 - 125 TA TJ Min Junction temperature range (8) Unit °C 1. VDD/VDDA minimum value of 1.7 V with the use of an external power supply supervisor (refer to Section 3.14.2: Internal reset OFF). 2. When the ADC is used, refer to Table 66: ADC characteristics. 3. If VREF+ pin is present, it must respect the following condition: VDDA-VREF+ < 1.2 V. 4. It is recommended to power VDD and VDDA from the same source. A maximum difference of 300 mV between VDD and VDDA can be tolerated during power-up and power-down operation. 5. Guaranteed by test in production 6. To sustain a voltage higher than VDD+0.3, the internal Pull-up and Pull-Down resistors must be disabled 7. If TA is lower, higher PD values are allowed as long as TJ does not exceed TJmax. 8. In low power dissipation state, TA can be extended to this range as long as TJ does not exceed TJmax. Table 15. Features depending on the operating power supply range Operating power supply range ADC operation VDD =1.7 to 2.1 V(4) Conversion time up to 1.2 Msps VDD = 2.1 to 2.4 V Conversion time up to 1.2 Msps VDD = 2.4 to 2.7 V Conversion time up to 2.4 Msps VDD = 2.7 to 3.6 V(6) 60/134 Conversion time up to 2.4 Msps Maximum Flash memory access frequency with no wait states (fFlashmax) Maximum Flash memory access frequency with wait states (1)(2) I/O operation Clock output frequency on I/O pins(3) Possible Flash memory operations 84 MHz with 4 wait states – No I/O up to 30 MHz compensation 8-bit erase and program operations only 22 MHz 84 MHz with 3 wait states – No I/O up to 30 MHz compensation 16-bit erase and program operations 24 MHz 84 MHz with 3 wait states – I/O compensation up to 48 MHz works 16-bit erase and program operations 84 MHz with 2 wait states – up to 84 MHz when VDD = – I/O 3.0 to 3.6 V compensation – up to works 48 MHz when VDD = 2.7 to 3.0 V 32-bit erase and program operations 20 MHz(5) 30 MHz DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics 1. Applicable only when the code is executed from Flash memory. When the code is executed from RAM, no wait state is required. 2. Thanks to the ART accelerator and the 128-bit Flash memory, the number of wait states given here does not impact the execution speed from Flash memory since the ART accelerator allows to achieve a performance equivalent to 0 wait state program execution. 3. Refer to Table 56: I/O AC characteristics for frequencies vs. external load. 4. VDD/VDDA minimum value of 1.7 V, with the use of an external power supply supervisor (refer to Section 3.14.2: Internal reset OFF). 5. Prefetch is not available. Refer to AN3430 application note for details on how to adjust performance and power. 6. The voltage range for the USB full speed embedded PHY can drop down to 2.7 V. However the electrical characteristics of D- and D+ pins will be degraded between 2.7 and 3 V. 6.3.2 VCAP_1/VCAP_2 external capacitors Stabilization for the main regulator is achieved by connecting 2 external capacitor CEXT to the VCAP_1 and VCAP_2 pins. For packages supporting only 1 VCAP pin, the 2 CEXT capacitors are replaced by a single capacitor. CEXT is specified in Table 16. Figure 20. External capacitor CEXT & (65 5/HDN 069 1. Legend: ESR is the equivalent series resistance. Table 16. VCAP_1/VCAP_2 operating conditions(1) Symbol Parameter Conditions CEXT Capacitance of external capacitor with available VCAP_1 and VCAP_2 pins 2.2 µF ESR ESR of external capacitor with available VCAP_1 and VCAP_2 pins <2Ω 1. When bypassing the voltage regulator, the two 2.2 µF VCAP capacitors are not required and should be replaced by two 100 nF decoupling capacitors. 6.3.3 Operating conditions at power-up/power-down (regulator ON) Subject to general operating conditions for TA. Table 17. Operating conditions at power-up / power-down (regulator ON) Symbol tVDD Parameter Min Max VDD rise time rate 20 ∞ VDD fall time rate 20 ∞ DocID024738 Rev 5 Unit µs/V 61/134 113 Electrical characteristics 6.3.4 STM32F401xB STM32F401xC Operating conditions at power-up / power-down (regulator OFF) Subject to general operating conditions for TA. Table 18. Operating conditions at power-up / power-down (regulator OFF)(1) Symbol tVDD tVCAP Parameter Conditions Min Max VDD rise time rate Power-up 20 ∞ VDD fall time rate Power-down 20 ∞ VCAP_1 and VCAP_2 rise time rate Power-up 20 ∞ VCAP_1 and VCAP_2 fall time rate Power-down 20 ∞ Unit µs/V 1. To reset the internal logic at power-down, a reset must be applied on pin PA0 when VDD reach below 1.08 V. Note: This feature is only available for UFBGA100 package. 6.3.5 Embedded reset and power control block characteristics The parameters given in Table 19 are derived from tests performed under ambient temperature and VDD supply voltage @ 3.3V. Table 19. Embedded reset and power control block characteristics Symbol (2) VPOR/PDR 62/134 Conditions Programmable voltage detector level selection VPVD VPVDhyst Parameter Min Typ Max PLS[2:0]=000 (rising edge) 2.09 2.14 2.19 PLS[2:0]=000 (falling edge) 1.98 2.04 2.08 PLS[2:0]=001 (rising edge) 2.23 2.30 2.37 PLS[2:0]=001 (falling edge) 2.13 2.19 2.25 PLS[2:0]=010 (rising edge) 2.39 2.45 2.51 PLS[2:0]=010 (falling edge) 2.29 2.35 2.39 PLS[2:0]=011 (rising edge) 2.54 2.60 2.65 PLS[2:0]=011 (falling edge) 2.44 2.51 2.56 PLS[2:0]=100 (rising edge) 2.70 2.76 2.82 PLS[2:0]=100 (falling edge) 2.59 2.66 2.71 PLS[2:0]=101 (rising edge) 2.86 2.93 2.99 PLS[2:0]=101 (falling edge) 2.65 2.84 2.92 PLS[2:0]=110 (rising edge) 2.96 3.03 3.10 PLS[2:0]=110 (falling edge) 2.85 2.93 2.99 PLS[2:0]=111 (rising edge) 3.07 3.14 3.21 PLS[2:0]=111 (falling edge) 2.95 3.03 3.09 - 100 - Falling edge 1.60(1) 1.68 1.76 Rising edge 1.64 1.72 1.80 PVD hysteresis Power-on/power-down reset threshold DocID024738 Rev 5 Unit V mV V STM32F401xB STM32F401xC Electrical characteristics Table 19. Embedded reset and power control block characteristics (continued) Symbol Parameter Min Typ Max Unit - 40 - mV Falling edge 2.13 2.19 2.24 Rising edge 2.23 2.29 2.33 Brownout level 2 threshold Falling edge 2.44 2.50 2.56 Rising edge 2.53 2.59 2.63 Brownout level 3 threshold Falling edge 2.75 2.83 2.88 Rising edge 2.85 2.92 2.97 - 100 - mV 0.5 1.5 3.0 ms InRush current on voltage regulator poweron (POR or wakeup from Standby) - 160 200 mA InRush energy on voltage regulator power- VDD = 1.7 V, TA = 105 °C, on (POR or wakeup from IRUSH = 171 mA for 31 µs Standby) - - 5.4 µC VPDRhyst(2) PDR hysteresis VBOR1 Brownout level 1 threshold VBOR2 VBOR3 VBORhyst (2) TRSTTEMPO (2)(3) IRUSH(2) ERUSH (2) Conditions BOR hysteresis POR reset timing V 1. The product behavior is guaranteed by design down to the minimum VPOR/PDR value. 2. Guaranteed by design. 3. The reset timing is measured from the power-on (POR reset or wakeup from VBAT) to the instant when first instruction is fetched by the user application code. 6.3.6 Supply current characteristics The current consumption is a function of several parameters and factors such as the operating voltage, ambient temperature, I/O pin loading, device software configuration, operating frequencies, I/O pin switching rate, program location in memory and executed binary code. The current consumption is measured as described in Figure 19: Current consumption measurement scheme. All the run-mode current consumption measurements given in this section are performed with a reduced code that gives a consumption equivalent to CoreMark code. DocID024738 Rev 5 63/134 113 Electrical characteristics STM32F401xB STM32F401xC Typical and maximum current consumption The MCU is placed under the following conditions: • All I/O pins are in input mode with a static value at VDD or VSS (no load). • All peripherals are disabled except if it is explicitly mentioned. • The Flash memory access time is adjusted to both fHCLK frequency and VDD ranges (refer to Table 15: Features depending on the operating power supply range). • The voltage scaling is adjusted to fHCLK frequency as follows: – Scale 3 for fHCLK ≤ 60 MHz – Scale 2 for 60 MHz < fHCLK ≤ 84 MHz • The system clock is HCLK, fPCLK1 = fHCLK/2, and fPCLK2 = fHCLK. • External clock is 4 MHz and PLL is on when fHCLK is higher than 25 MHz. • The maximum values are obtained for VDD = 3.6 V and a maximum ambient temperature (TA), and the typical values for TA= 25 °C and VDD = 3.3 V unless otherwise specified. Table 20. Typical and maximum current consumption, code with data processing (ART accelerator disabled) running from SRAM - VDD =1.8V Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Run mode External clock, all peripherals disabled(3) Max(1) fHCLK (MHz) Typ 84 Unit TA= 25 °C TA=85 °C TA=105 °C 20.0 21 22 23(4) 60 14.5 15 16 17 40 10.4 11 12 13 20 5.5 6 7 8 84 10.9 11 13 14(4) 60 8.0 9 10 11 40 5.8 6 7 8 20 3.2 4 5 6 mA 1. Guaranteed by characterization, unless otherwise specified. 2. When analog peripheral blocks such as ADC, HSE, LSE, HSI, or LSI are ON, an additional power consumption has to be considered. 3. When the ADC is ON (ADON bit set in the ADC_CR2 register), add an additional power consumption of 1.6 mA for the analog part. 4. Guaranteed by test in production. 64/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 21. Typical and maximum current consumption, code with data processing (ART accelerator disabled) running from SRAM Symbol Parameter Conditions Typ 84 External clock, all peripherals enabled(2)(3) IDD Max(1) fHCLK (MHz) Supply current in Run mode External clock, all peripherals disabled(3) Unit TA= 25 °C TA=85 °C TA=105 °C 20.2 21 22 23 60 14.7 15 16 18 40 10.7 11 12 13 20 5.7 6 7 8 84 11.2 12 13 14 60 8.2 9 10 11 40 6.1 7 8 9 20 3.4 4 5 6 mA 1. Guaranteed by characterization, unless otherwise specified. 2. When analog peripheral blocks such as ADC, HSE, LSE, HSI, or LSI are ON, an additional power consumption has to be considered. 3. When the ADC is ON (ADON bit set in the ADC_CR2 register), add an additional power consumption of 1.6 mA for the analog part. Table 22. Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled except prefetch) running from Flash memory- VDD = 1.8 V Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Run mode External clock, all peripherals disabled(3) Max(1) fHCLK (MHz) Typ 84 TA = 25 °C TA = 85 °C TA = 105 °C 22.2 23 24 25 60 14.5 15 16 17 40 10.7 11 12 13 30 8.6 9 10 11 20 7.0 8 9 10 84 11.5 12 13 14 60 7.7 8 9 10 40 5.6 6 7 8 30 4.5 5 6 7 20 3.8 5 6 7 Unit mA 1. Guaranteed by characterization, unless otherwise specified. 2. Add an additional power consumption of 1.6 mA per ADC for the analog part. In applications, this consumption occurs only while the ADC is ON (ADON bit is set in the ADC_CR2 register). 3. When the ADC is ON (ADON bit set in the ADC_CR2), add an additional power consumption of 1.6mA per ADC for the analog part. DocID024738 Rev 5 65/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 23. Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled except prefetch) running from Flash memory - VDD = 3.3 V Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Run mode External clock, all peripherals disabled(3) Max(1) fHCLK (MHz) Typ TA = 25 °C TA = 85 °C TA = 105 °C 84 22.5 23 24 25 60 14.8 16 17 18 40 11.0 12 13 14 30 8.9 10 11 12 20 7.3 8 9 10 84 11.8 13 14 15 60 7.9 9 10 11 40 5.8 7 8 9 30 4.8 6 7 8 20 4.0 5 6 7 Unit mA 1. Guaranteed by characterization, unless otherwise specified. 2. Add an additional power consumption of 1.6 mA per ADC for the analog part. In applications, this consumption occurs only while the ADC is ON (ADON bit is set in the ADC_CR2 register). 3. When the ADC is ON (ADON bit set in the ADC_CR2), add an additional power consumption of 1.6mA per ADC for the analog part. . Table 24. Typical and maximum current consumption in run mode, code with data processing (ART accelerator disabled) running from Flash memory Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Run mode External clock, all peripherals disabled(3) Max(1) fHCLK (MHz) Typ TA = 25 °C TA = 85 °C TA = 105 °C 84 30.6 32 34 35 60 21.4 22 24 25 40 15.6 16 17 18 30 12.7 13 14 15 20 10.0 11 12 13 84 19.9 21 23 25 60 14.6 15 16 17 40 10.4 11 12 13 30 8.6 9 10 11 20 6.7 7 8 9 Unit mA 1. Guaranteed by characterization, unless otherwise specified. 2. Add an additional power consumption of 1.6 mA per ADC for the analog part. In applications, this consumption occurs only while the ADC is ON (ADON bit is set in the ADC_CR2 register). 3. When the ADC is ON (ADON bit set in the ADC_CR2), add an additional power consumption of 1.6mA per ADC for the analog part. 66/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 25. Typical and maximum current consumption in run mode, code with data processing (ART accelerator enabled with prefetch) running from Flash memory Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Run mode External clock, all peripherals disabled(3) Max(1) fHCLK (MHz) Typ TA = 25 °C TA = 85 °C TA = 105 °C 84 31.8 33 35 36 60 21.8 22 23 24 40 16.0 17 18 19 30 12.9 14 15 16 20 10.4 11 12 13 84 21.2 22 23 24 60 15.0 16 17 18 40 10.9 12 13 14 30 8.8 10 11 12 20 7.1 8 9 10 Unit mA 1. Guaranteed by characterization, unless otherwise specified. 2. Add an additional power consumption of 1.6 mA per ADC for the analog part. In applications, this consumption occurs only while the ADC is ON (ADON bit is set in the ADC_CR2 register). 3. When the ADC is ON (ADON bit set in the ADC_CR2), add an additional power consumption of 1.6mA per ADC for the analog part. Table 26. Typical and maximum current consumption in Sleep mode Symbol Parameter Conditions External clock, all peripherals enabled(2)(3) IDD Supply current in Sleep mode External clock, all peripherals disabled(3)(4) Max(1) fHCLK (MHz) Typ TA = 25 °C TA = 85 °C TA = 105 °C 84 16.2 17 18 19 60 10.7 11 12 13 40 8.3 9 10 11 30 6.8 7 8 9 20 5.9 6 7 8 84 5.2 6 7 8 60 3.6 4 5 6 40 2.9 3 4 5 30 2.6 3 4 5 20 2.6 3 4 5 Unit mA 1. Guaranteed by characterization, unless otherwise specified. 2. Add an additional power consumption of 1.6 mA per ADC for the analog part. In applications, this consumption occurs only while the ADC is ON (ADON bit is set in the ADC_CR2 register). 3. When the ADC is ON (ADON bit set in the ADC_CR2 register), add an additional power consumption of 1.6 mA for the analog part. 4. Same current consumption for fHCLK at 30 MHz and 20 MHz due to VCO running slower at 30 MHz. DocID024738 Rev 5 67/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 27. Typical and maximum current consumptions in Stop mode - VDD=1.8 V Symbol Parameter Conditions Main regulator usage Low power regulator usage IDD_STOP Main regulator usage Low power regulator usage Low power low voltage regulator usage Typ Max(1) TA = 25 °C TA = TA = TA = 25 °C 85 °C 105 °C Flash in Stop mode, all oscillators OFF, no independent watchdog 109 135 440 650 41 65 310 530(2) Flash in Deep power down mode, all oscillators OFF, no independent watchdog 72 95 345 530 12 36 260 510(2) 10 27 230 460 Unit µA 1. Guaranteed by characterization. 2. Guaranteed by test in production. Table 28. Typical and maximum current consumption in Stop mode - VDD=3.3 V Symbol Parameter Main regulator usage Low power regulator usage Conditions Typ Max(1) TA = 25 °C TA = TA = TA = 25 °C 85 °C 105 °C Flash in Stop mode, all oscillators OFF, no independent watchdog IDD_STOP Main regulator usage Flash in Deep power down mode, all oscillators Low power regulator usage OFF, no independent Low power low voltage regulator usage watchdog 111 140 450 670 42 65 330 560 73 100 360 560 12 36 270 520 10 28 230 470 Unit µA 1. Guaranteed by characterization. Table 29. Typical and maximum current consumption in Standby mode - VDD=1.8 V Typ(1) Symbol IDD_STBY Parameter Conditions Supply current in Low-speed oscillator (LSE) and RTC ON Standby mode RTC and LSE OFF TA = 25 °C 2.4 1.8 Max(2) TA = TA = 25 °C 85 °C 4.0 (3) 3.0 1. When the PDR is OFF (internal reset is OFF), the typical current consumption is reduced by 1.2 µA. 2. Guaranteed by characterization, unless otherwise specified. 3. Guaranteed by test in production. 68/134 DocID024738 Rev 5 TA = 105 °C 12.0 24.0 11.0 23.0(3) Unit µA STM32F401xB STM32F401xC Electrical characteristics Table 30. Typical and maximum current consumption in Standby mode - VDD=3.3 V Typ(1) Symbol Parameter Conditions Supply current in Low-speed oscillator (LSE) and RTC ON Standby mode RTC and LSE OFF IDD_STBY Max(2) Unit TA = 105 °C TA = 25 °C TA = 25 °C TA = 85 °C 2.8 5.0 14.0 28.0 13.0 27.0(3) 2.1 4.0 (3) µA 1. When the PDR is OFF (internal reset is OFF), the typical current consumption is reduced by 1.2 µA. 2. Guaranteed by characterization, unless otherwise specified. 3. Guaranteed by test in production. Table 31. Typical and maximum current consumptions in VBAT mode Max(2) Typ Symbol TA = 85 °C TA = 25 °C Conditions(1) Parameter VBAT = VBAT= VBAT = 1.7 V 2.4 V 3.3 V Backup Low-speed oscillator (LSE) and RTC ON IDD_VBAT domain supply RTC and LSE OFF current TA = 105 °C Unit VBAT = 3.6 V 0.66 0.76 0.97 3.0 5.0 0.1 0.1 0.1 2.0 4.0 µA 1. Crystal used: Abracon ABS07-120-32.768 kHz-T with a CL of 6 pF for typical values. 2. Guaranteed by characterization. Figure 21. Typical VBAT current consumption (LSE and RTC ON) )$$?6"!4! 6 6 6 6 6 6 6 6 6 # # # # # 4EMPERATURE -36 DocID024738 Rev 5 69/134 113 Electrical characteristics STM32F401xB STM32F401xC I/O system current consumption The current consumption of the I/O system has two components: static and dynamic. I/O static current consumption All the I/Os used as inputs with pull-up generate current consumption when the pin is externally held low. The value of this current consumption can be simply computed by using the pull-up/pull-down resistors values given in Table 54: I/O static characteristics. For the output pins, any external pull-down or external load must also be considered to estimate the current consumption. Additional I/O current consumption is due to I/Os configured as inputs if an intermediate voltage level is externally applied. This current consumption is caused by the input Schmitt trigger circuits used to discriminate the input value. Unless this specific configuration is required by the application, this supply current consumption can be avoided by configuring these I/Os in analog mode. This is notably the case of ADC input pins which should be configured as analog inputs. Caution: Any floating input pin can also settle to an intermediate voltage level or switch inadvertently, as a result of external electromagnetic noise. To avoid current consumption related to floating pins, they must either be configured in analog mode, or forced internally to a definite digital value. This can be done either by using pull-up/down resistors or by configuring the pins in output mode. I/O dynamic current consumption In addition to the internal peripheral current consumption (see Table 33: Peripheral current consumption), the I/Os used by an application also contribute to the current consumption. When an I/O pin switches, it uses the current from the MCU supply voltage to supply the I/O pin circuitry and to charge/discharge the capacitive load (internal or external) connected to the pin: I SW = V DD × f SW × C where ISW is the current sunk by a switching I/O to charge/discharge the capacitive load VDD is the MCU supply voltage fSW is the I/O switching frequency C is the total capacitance seen by the I/O pin: C = CINT+ CEXT The test pin is configured in push-pull output mode and is toggled by software at a fixed frequency. 70/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 32. Switching output I/O current consumption Symbol Parameter Conditions(1) VDD = 3.3 V C = CINT(2) VDD = 3.3 V CEXT = 0 pF C = CINT + CEXT + CS IDDIO I/O switching current VDD = 3.3 V CEXT =10 pF C = CINT + CEXT + CS VDD = 3.3 V CEXT = 22 pF C = CINT + CEXT + CS VDD = 3.3 V CEXT = 33 pF C = CINT + CEXT + CS I/O toggling frequency (fSW) Typ 2 MHz 0.05 8 MHz 0.15 25 MHz 0.45 50 MHz 0.85 60 MHz 1.00 84 MHz 1.40 2 MHz 0.10 8 MHz 0.35 25 MHz 1.05 50 MHz 2.20 60 MHz 2.40 84 MHz 3.55 2 MHz 0.20 8 MHz 0.65 25 MHz 1.85 50 MHz 2.45 60 MHz 4.70 84 MHz 8.80 2 MHz 0.25 8 MHz 1.00 25 MHz 3.45 50 MHz 7.15 60 MHz 11.55 2 MHz 0.32 8 MHz 1.27 25 MHz 3.88 50 MHz 12.34 Unit mA 1. CS is the PCB board capacitance including the pad pin. CS = 7 pF (estimated value). 2. This test is performed by cutting the LQFP100 package pin (pad removal). DocID024738 Rev 5 71/134 113 Electrical characteristics STM32F401xB STM32F401xC On-chip peripheral current consumption The MCU is placed under the following conditions: • At startup, all I/O pins are in analog input configuration. • All peripherals are disabled unless otherwise mentioned. • The ART accelerator is ON. • Voltage Scale 2 mode selected, internal digital voltage V12 = 1.26 V. • HCLK is the system clock at 84 MHz. fPCLK1 = fHCLK/2, and fPCLK2 = fHCLK. The given value is calculated by measuring the difference of current consumption • – with all peripherals clocked off – with only one peripheral clocked on Ambient operating temperature is 25 °C and VDD=3.3 V. Table 33. Peripheral current consumption Peripheral AHB1 (up to 84MHz) APB1 (up to 42MHz) AHB2 (up to 84MHz) 72/134 IDD (typ) GPIOA 1.55 GPIOB 1.55 GPIOC 1.55 GPIOD 1.55 GPIOE 1.55 GPIOH 1.55 CRC 0.36 DMA1 20.24 DMA2 21.07 TIM2 11.19 TIM3 8.57 TIM4 8.33 TIM5 11.19 PWR 0.71 USART2 3.33 I2C1/2/3 3.10 SPI2(1) 2.62 SPI3(1) 2.86 I2S2 1.90 I2S3 1.67 WWDG 0.71 OTG_FS 23.93 DocID024738 Rev 5 Unit µA/MHz µA/MHz µA/MHz STM32F401xB STM32F401xC Electrical characteristics Table 33. Peripheral current consumption (continued) Peripheral IDD (typ) TIM1 5.71 TIM9 2.86 TIM10 1.79 TIM11 2.02 (2) ADC1 2.98 SPI1 1.19 USART1 3.10 USART6 2.86 SDIO 5.95 SPI4 1.31 SYSCFG 0.71 APB2 (up to 84MHz) Unit µA/MHz 1. I2SMOD bit set in SPI_I2SCFGR register, and then the I2SE bit set to enable I2S peripheral. 2. When the ADC is ON (ADON bit set in the ADC_CR2 register), add an additional power consumption of 1.6 mA for the analog part. 6.3.7 Wakeup time from low-power modes The wakeup times given in Table 34 are measured starting from the wakeup event trigger up to the first instruction executed by the CPU: • For Stop or Sleep modes: the wakeup event is WFE. • WKUP (PA0) pin is used to wakeup from Standby, Stop and Sleep modes. All timings are derived from tests performed under ambient temperature and VDD=3.3 V. Table 34. Low-power mode wakeup timings(1) Min(1) Typ(1) Max(1) Unit Wakeup from Sleep mode - 4 6 CPU clock cycle Wakeup from Stop mode, usage of main regulator - 13.5 14.5 Wakeup from Stop mode, usage of main regulator, Flash memory in Deep power down mode - 105 111 Wakeup from Stop mode, regulator in low power mode - 21 33 Wakeup from Stop mode, regulator in low power mode, Flash memory in Deep power down mode - 113 130 Wakeup from Standby mode - 314 407 Symbol tWUSLEEP(2) tWUSTOP(2) tWUSTDBY(2)(3) Parameter µs µs 1. Guaranteed by characterization. 2. The wakeup times are measured from the wakeup event to the point in which the application code reads the first instruction. 3. tWUSTDBY maximum value is given at –40 °C. DocID024738 Rev 5 73/134 113 Electrical characteristics 6.3.8 STM32F401xB STM32F401xC External clock source characteristics High-speed external user clock generated from an external source In bypass mode the HSE oscillator is switched off and the input pin is a standard I/O. The external clock signal has to respect the Table 54. However, the recommended clock input waveform is shown in Figure 22. The characteristics given in Table 35 result from tests performed using an high-speed external clock source, and under ambient temperature and supply voltage conditions summarized in Table 14. Table 35. High-speed external user clock characteristics Symbol Parameter Conditions Min Typ Max Unit 1 - 50 MHz fHSE_ext External user clock source frequency(1) VHSEH OSC_IN input pin high level voltage 0.7VDD - VDD VHSEL OSC_IN input pin low level voltage VSS - 0.3VDD tw(HSE) tw(HSE) OSC_IN high or low time(1) 5 - - tr(HSE) tf(HSE) Cin(HSE) ns OSC_IN rise or fall time(1) OSC_IN input capacitance(1) DuCy(HSE) Duty cycle IL V OSC_IN Input leakage current VSS ≤ VIN ≤ VDD - - 10 - 5 - pF 45 - 55 % - - ±1 µA 1. Guaranteed by design. Low-speed external user clock generated from an external source In bypass mode the LSE oscillator is switched off and the input pin is a standard I/O. The external clock signal has to respect the Table 54. However, the recommended clock input waveform is shown in Figure 23. The characteristics given in Table 36 result from tests performed using an low-speed external clock source, and under ambient temperature and supply voltage conditions summarized in Table 14. 74/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 36. Low-speed external user clock characteristics Symbol Parameter Conditions Min Typ Max Unit - 32.768 1000 kHz 0.7VDD - VDD fLSE_ext User External clock source frequency(1) VLSEH OSC32_IN input pin high level voltage VLSEL OSC32_IN input pin low level voltage VSS - 0.3VDD tw(LSE) tf(LSE) OSC32_IN high or low time(1) 450 - - tr(LSE) tf(LSE) OSC32_IN rise or fall time(1) - - 50 OSC32_IN input capacitance(1) - 5 - pF 30 - 70 % - - ±1 µA Cin(LSE) DuCy(LSE) IL V ns Duty cycle VSS ≤ VIN ≤ VDD OSC32_IN Input leakage current 1. Guaranteed by design. Figure 22. High-speed external clock source AC timing diagram 6(3%( 6(3%, TR(3% TF(3% T7(3% T T7(3% 4(3% %XTERNAL CLOCKSOURCE F(3%?EXT /3#?). ), 34-& AI DocID024738 Rev 5 75/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 23. Low-speed external clock source AC timing diagram 9/6(+ 9/6(/ WU/6( WI/6( W:/6( 26&B,1 ,/ W:/6( W 7/6( I/6(BH[W ([WHUQDO FORFNVRXUFH 670) DL High-speed external clock generated from a crystal/ceramic resonator The high-speed external (HSE) clock can be supplied with a 4 to 26 MHz crystal/ceramic resonator oscillator. All the information given in this paragraph are based on characterization results obtained with typical external components specified in Table 37. In the application, the resonator and the load capacitors have to be placed as close as possible to the oscillator pins in order to minimize output distortion and startup stabilization time. Refer to the crystal resonator manufacturer for more details on the resonator characteristics (frequency, package, accuracy). Table 37. HSE 4-26 MHz oscillator characteristics(1) Symbol fOSC_IN RF IDD Parameter Min Typ Max Unit Oscillator frequency 4 - 26 MHz Feedback resistor - 200 - kΩ VDD=3.3 V, ESR= 30 Ω, CL=5 pF @25 MHz - 450 - VDD=3.3 V, ESR= 30 Ω, CL=10 pF @25 MHz - 530 - Startup - - 1 mA/V VDD is stabilized - 2 - ms HSE current consumption Conditions Gm_crit_max Maximum critical crystal gm tSU(HSE)(2) Startup time µA 1. Guaranteed by design. 2. tSU(HSE) is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz oscillation is reached. This value is measured for a standard crystal resonator and it can vary significantly with the crystal manufacturer For CL1 and CL2, it is recommended to use high-quality external ceramic capacitors in the 5 pF to 25 pF range (typ.), designed for high-frequency applications, and selected to match the requirements of the crystal or resonator (see Figure 24). CL1 and CL2 are usually the same size. The crystal manufacturer typically specifies a load capacitance which is the 76/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics series combination of CL1 and CL2. PCB and MCU pin capacitance must be included (10 pF can be used as a rough estimate of the combined pin and board capacitance) when sizing CL1 and CL2. Note: For information on selecting the crystal, refer to the application note AN2867 “Oscillator design guide for ST microcontrollers” available from the ST website www.st.com. Figure 24. Typical application with an 8 MHz crystal 5HVRQDWRUZLWK LQWHJUDWHGFDSDFLWRUV &/ 0+] UHVRQDWRU &/ I+6( 26&B,1 5(;7 %LDV FRQWUROOHG JDLQ 5) 26&B28 7 670) DL 1. REXT value depends on the crystal characteristics. Low-speed external clock generated from a crystal/ceramic resonator The low-speed external (LSE) clock can be supplied with a 32.768 kHz crystal/ceramic resonator oscillator. All the information given in this paragraph are based on characterization results obtained with typical external components specified in Table 38. In the application, the resonator and the load capacitors have to be placed as close as possible to the oscillator pins in order to minimize output distortion and startup stabilization time. Refer to the crystal resonator manufacturer for more details on the resonator characteristics (frequency, package, accuracy). Table 38. LSE oscillator characteristics (fLSE = 32.768 kHz) (1) Symbol Parameter Conditions Min Typ Max Unit RF Feedback resistor - 18.4 - MΩ IDD LSE current consumption - - 1 µA Startup - - 0.56 µA/V VDD is stabilized - 2 - s Gm_crit_max Maximum critical crystal gm tSU(LSE)(2) startup time 1. Guaranteed by design. 2. tSU(LSE) is the startup time measured from the moment it is enabled (by software) to a stabilized 32.768 kHz oscillation is reached. This value is guaranteed by characterization. It is measured for a standard crystal resonator and it can vary significantly with the crystal manufacturer. Note: For information on selecting the crystal, refer to the application note AN2867 “Oscillator design guide for ST microcontrollers” available from the ST website www.st.com. DocID024738 Rev 5 77/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 25. Typical application with a 32.768 kHz crystal 5HVRQDWRUZLWK LQWHJUDWHGFDSDFLWRUV &/ I/6( 26&B,1 %LDV 5) FRQWUROOHG JDLQ N+ ] UHVRQDWRU 26&B28 7 &/ 670) DL 6.3.9 Internal clock source characteristics The parameters given in Table 39 and Table 40 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. High-speed internal (HSI) RC oscillator Table 39. HSI oscillator characteristics (1) Symbol fHSI Parameter Conditions Min Typ Max Unit - - 16 - MHz - - 1 % –8 - 4.5 % –4 - 4 % –1 - 1 % Frequency HSI user trimming ACCHSI step(2) TA = –40 to 105 Accuracy of the HSI oscillator TA = –10 to 85 TA = 25 °C(4) tsu(HSI) (2) IDD(HSI)(2) °C(3) HSI oscillator startup time - - 2.2 4 µs HSI oscillator power consumption - - 60 80 µA 1. VDD = 3.3 V, TA = –40 to 105 °C unless otherwise specified. 2. Guaranteed by design. 3. Guaranteed by characterization. 4. Factory calibrated, parts not soldered. 78/134 °C(3) DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Figure 26. ACCHSI versus temperature !##(3) 4! # -IN -AX 4YPICAL -36 1. Guaranteed by characterization. Low-speed internal (LSI) RC oscillator Table 40. LSI oscillator characteristics (1) Symbol fLSI(2) tsu(LSI) (3) IDD(LSI)(3) Parameter Min Typ Max Unit 17 32 47 kHz LSI oscillator startup time - 15 40 µs LSI oscillator power consumption - 0.4 0.6 µA Frequency 1. VDD = 3 V, TA = –40 to 105 °C unless otherwise specified. 2. Guaranteed by characterization. 3. Guaranteed by design. DocID024738 Rev 5 79/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 27. ACCLSI versus temperature MAX AVG MIN .ORMALIZEDDEVIATI ON 4EMPERAT URE # -36 6.3.10 PLL characteristics The parameters given in Table 41 and Table 42 are derived from tests performed under temperature and VDD supply voltage conditions summarized in Table 14. Table 41. Main PLL characteristics Symbol Parameter fPLL_IN PLL input clock(1) fPLL_OUT PLL multiplier output clock fPLL48_OUT 48 MHz PLL multiplier output clock fVCO_OUT PLL VCO output tLOCK PLL lock time Conditions Min Typ Max Unit 0.95(2) 1 2.10 MHz 24 - 84 MHz - 48 75 MHz 192 - 432 MHz VCO freq = 192 MHz 75 - 200 VCO freq = 432 MHz 100 - 300 - 25 - - ±150 - - 15 - - ±200 - RMS Cycle-to-cycle jitter System clock 84 MHz Jitter(3) RMS peak to peak Period Jitter 80/134 peak to peak DocID024738 Rev 5 µs ps STM32F401xB STM32F401xC Electrical characteristics Table 41. Main PLL characteristics (continued) Symbol Parameter Conditions Min Typ Max IDD(PLL)(4) PLL power consumption on VDD VCO freq = 192 MHz VCO freq = 432 MHz 0.15 0.45 - 0.40 0.75 IDDA(PLL)(4) PLL power consumption on VDDA VCO freq = 192 MHz VCO freq = 432 MHz 0.30 0.55 - 0.40 0.85 Unit mA 1. Take care of using the appropriate division factor M to obtain the specified PLL input clock values. The M factor is shared between PLL and PLLI2S. 2. Guaranteed by design. 3. The use of 2 PLLs in parallel could degraded the Jitter up to +30%. 4. Guaranteed by characterization. Table 42. PLLI2S (audio PLL) characteristics Symbol Parameter Min Typ Max 0.95(2) 1 2.10 - - 216 192 - 432 VCO freq = 192 MHz 75 - 200 VCO freq = 432 MHz 100 - 300 RMS - 90 - peak to peak - ±280 - Average frequency of 12.288 MHz N = 432, R = 5 on 1000 samples - 90 - WS I2S clock jitter Cycle to cycle at 48 KHz on 1000 samples - 400 - IDD(PLLI2S)(4) PLLI2S power consumption on VDD VCO freq = 192 MHz VCO freq = 432 MHz 0.15 0.45 - 0.40 0.75 IDDA(PLLI2S)(4) PLLI2S power consumption on VDDA VCO freq = 192 MHz VCO freq = 432 MHz 0.30 0.55 - 0.40 0.85 fPLLI2S_IN PLLI2S input clock(1) fPLLI2S_OUT PLLI2S multiplier output clock fVCO_OUT PLLI2S VCO output tLOCK PLLI2S lock time Conditions Cycle to cycle at 12.288 MHz on 48 KHz period, N=432, R=5 Master I2S clock jitter (3) Jitter Unit MHz µs ps mA 1. Take care of using the appropriate division factor M to have the specified PLL input clock values. 2. Guaranteed by design. 3. Value given with main PLL running. 4. Guaranteed by characterization. DocID024738 Rev 5 81/134 113 Electrical characteristics 6.3.11 STM32F401xB STM32F401xC PLL spread spectrum clock generation (SSCG) characteristics The spread spectrum clock generation (SSCG) feature allows to reduce electromagnetic interferences (see Table 49: EMI characteristics for WLCSP49). It is available only on the main PLL. Table 43. SSCG parameters constraint Symbol Parameter Min Typ Max(1) Unit fMod Modulation frequency - - 10 KHz md Peak modulation depth 0.25 - 2 % - 215 MODEPER * INCSTEP - -1 - 1. Guaranteed by design. Equation 1 The frequency modulation period (MODEPER) is given by the equation below: MODEPER = round [ f PLL_IN ⁄ ( 4 × fMod ) ] fPLL_IN and fMod must be expressed in Hz. As an example: If fPLL_IN = 1 MHz, and fMOD = 1 kHz, the modulation depth (MODEPER) is given by equation 1: 6 3 MODEPER = round [ 10 ⁄ ( 4 × 10 ) ] = 250 Equation 2 Equation 2 allows to calculate the increment step (INCSTEP): INCSTEP = round [ ( ( 2 15 – 1 ) × md × PLLN ) ⁄ ( 100 × 5 × MODEPER ) ] fVCO_OUT must be expressed in MHz. With a modulation depth (md) = ±2 % (4 % peak to peak), and PLLN = 240 (in MHz): INCSTEP = round [ ( ( 2 15 – 1 ) × 2 × 240 ) ⁄ ( 100 × 5 × 250 ) ] = 126md(quantitazed)% An amplitude quantization error may be generated because the linear modulation profile is obtained by taking the quantized values (rounded to the nearest integer) of MODPER and INCSTEP. As a result, the achieved modulation depth is quantized. The percentage quantized modulation depth is given by the following formula: md quantized % = ( MODEPER × INCSTEP × 100 × 5 ) ⁄ ( ( 2 15 – 1 ) × PLLN ) As a result: md quantized % = ( 250 × 126 × 100 × 5 ) ⁄ ( ( 2 82/134 DocID024738 Rev 5 15 – 1 ) × 240 ) = 2,002%(peak) STM32F401xB STM32F401xC Electrical characteristics Figure 28 and Figure 29 show the main PLL output clock waveforms in center spread and down spread modes, where: F0 is fPLL_OUT nominal. Tmode is the modulation period. md is the modulation depth. Figure 28. PLL output clock waveforms in center spread mode &REQUENCY0,,?/54 MD & MD TMODE 4IME XTMODE AI Figure 29. PLL output clock waveforms in down spread mode &REQUENCY0,,?/54 & XMD TMODE 4IME XTMODE AI 6.3.12 Memory characteristics Flash memory The characteristics are given at TA = –40 to 105 °C unless otherwise specified. The devices are shipped to customers with the Flash memory erased. Table 44. Flash memory characteristics Symbol IDD Parameter Supply current Conditions Min Typ Max Write / Erase 8-bit mode, VDD = 1.7 V - 5 - Write / Erase 16-bit mode, VDD = 2.1 V - 8 - Write / Erase 32-bit mode, VDD = 3.3 V - 12 - DocID024738 Rev 5 Unit mA 83/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 45. Flash memory programming Symbol tprog Parameter Word programming time tERASE16KB Sector (16 KB) erase time tERASE64KB Sector (64 KB) erase time tERASE128KB Sector (128 KB) erase time tME Vprog Mass erase time Programming voltage Conditions Min(1) Typ Max(1) Unit Program/erase parallelism (PSIZE) = x 8/16/32 - 16 100(2) Program/erase parallelism (PSIZE) = x 8 - 400 800 Program/erase parallelism (PSIZE) = x 16 - 300 600 Program/erase parallelism (PSIZE) = x 32 - 250 500 Program/erase parallelism (PSIZE) = x 8 - 1200 2400 Program/erase parallelism (PSIZE) = x 16 - 700 1400 Program/erase parallelism (PSIZE) = x 32 - 550 1100 Program/erase parallelism (PSIZE) = x 8 - 2 4 Program/erase parallelism (PSIZE) = x 16 - 1.3 2.6 Program/erase parallelism (PSIZE) = x 32 - 1 2 Program/erase parallelism (PSIZE) = x 8 - 4 8 Program/erase parallelism (PSIZE) = x 16 - 2.75 5.5 Program/erase parallelism (PSIZE) = x 32 - 2 4 32-bit program operation 2.7 - 3.6 V 16-bit program operation 2.1 - 3.6 V 8-bit program operation 1.7 - 3.6 V µs ms ms s s 1. Guaranteed by characterization. 2. The maximum programming time is measured after 100K erase operations. Table 46. Flash memory programming with VPP voltage Symbol Parameter tprog Double word programming tERASE16KB Sector (16 KB) erase time tERASE64KB Sector (64 KB) erase time tERASE128KB Sector (128 KB) erase time tME 84/134 Conditions TA = 0 to +40 °C VDD = 3.3 V VPP = 8.5 V Mass erase time DocID024738 Rev 5 Min(1) Typ Max(1) Unit - 16 100(2) µs - 230 - - 490 - - 875 - - 1.750 - ms s STM32F401xB STM32F401xC Electrical characteristics Table 46. Flash memory programming with VPP voltage (continued) Symbol Parameter Conditions Min(1) Typ Max(1) Unit 2.7 - 3.6 V Vprog Programming voltage VPP VPP voltage range 7 - 9 V IPP Minimum current sunk on the VPP pin 10 - - mA - - 1 hour tVPP(3) Cumulative time during which VPP is applied 1. Guaranteed by design. 2. The maximum programming time is measured after 100K erase operations. 3. VPP should only be connected during programming/erasing. Table 47. Flash memory endurance and data retention Value Symbol NEND tRET Parameter Endurance Data retention Conditions Min(1) TA = –40 to +85 °C (6 suffix versions) TA = –40 to +105 °C (7 suffix versions) 10 1 kcycle(2) at TA = 85 °C 30 1 kcycle 10 (2) at TA = 105 °C kcycles(2) at TA = 55 °C 10 Unit kcycles Years 20 1. Guaranteed by characterization. 2. Cycling performed over the whole temperature range. 6.3.13 EMC characteristics Susceptibility tests are performed on a sample basis during device characterization. Functional EMS (electromagnetic susceptibility) While a simple application is executed on the device (toggling 2 LEDs through I/O ports). the device is stressed by two electromagnetic events until a failure occurs. The failure is indicated by the LEDs: • Electrostatic discharge (ESD) (positive and negative) is applied to all device pins until a functional disturbance occurs. This test is compliant with the IEC 61000-4-2 standard. • FTB: A burst of fast transient voltage (positive and negative) is applied to VDD and VSS through a 100 pF capacitor, until a functional disturbance occurs. This test is compliant with the IEC 61000-4-4 standard. A device reset allows normal operations to be resumed. The test results are given in Table 48. They are based on the EMS levels and classes defined in application note AN1709. DocID024738 Rev 5 85/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 48. EMS characteristics for LQFP100 package Symbol Parameter Conditions Level/ Class VFESD Voltage limits to be applied on any I/O pin to induce a functional disturbance VDD = 3.3 V, LQFP100, WLCSP49, TA = +25 °C, fHCLK = 84 MHz, conforms to IEC 61000-4-2 2B VEFTB Fast transient voltage burst limits to be applied through 100 pF on VDD and VSS pins to induce a functional disturbance VDD = 3.3 V, LQFP100, WLCSP49, TA = +25 °C, fHCLK = 84 MHz, conforms to IEC 61000-4-4 4A When the application is exposed to a noisy environment, it is recommended to avoid pin exposition to disturbances. The pins showing a middle range robustness are: PA0, PA1, PA2, on LQFP100 packages and PDR_ON on WLCSP49. As a consequence, it is recommended to add a serial resistor (1 kΩ maximum) located as close as possible to the MCU to the pins exposed to noise (connected to tracks longer than 50 mm on PCB). 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. It should be noted that good EMC performance is highly dependent on 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 his application. Software recommendations The software flowchart must include the management of runaway conditions such as: • Corrupted program counter • Unexpected reset • Critical Data corruption (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 pin or the Oscillator pins for 1 second. 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). 86/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Electromagnetic Interference (EMI) The electromagnetic field emitted by the device are 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 49. EMI characteristics for WLCSP49 Symbol Parameter Conditions Monitored frequency band Max vs. [fHSE/fCPU] Unit 25/84 MHz SEMI Peak level VDD = 3.3 V, TA = 25 °C, conforming to IEC61967-2 0.1 to 30 MHz -6 30 to 130 MHz -6 130 MHz to 1 GHz -10 SAE EMI Level 1.5 - Max vs. [fHSE/fCPU] Unit dBµV Table 50. EMI characteristics for LQFP100 Symbol Parameter Conditions Monitored frequency band 25/84 MHz SEMI 6.3.14 Peak level VDD = 3.3 V, TA = 25 °C, conforming to IEC61967-2 0.1 to 30 MHz 18 30 to 130 MHz 23 130 MHz to 1 GHz 12 SAE EMI Level 3.5 dBµV - Absolute maximum ratings (electrical sensitivity) Based on three different tests (ESD, LU) using specific measurement methods, the device is stressed in order to determine its performance in terms of electrical sensitivity. Electrostatic discharge (ESD) Electrostatic discharges (a positive then a negative pulse separated by 1 second) are applied to the pins of each sample according to each pin combination. The sample size depends on the number of supply pins in the device (3 parts × (n+1) supply pins). This test conforms to the JESD22-A114/C101 standard. DocID024738 Rev 5 87/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 51. ESD absolute maximum ratings Symbol Ratings Conditions Class Maximum value(1) VESD(HBM) Electrostatic discharge TA = +25 °C conforming to JESD22voltage (human body model) A114 2 2000 VESD(CDM) Electrostatic discharge voltage (charge device model) II 500 TA = +25 °C conforming to ANSI/ESD STM5.3.1 Unit V 1. Guaranteed by characterization. Static latchup Two complementary static tests are required on six parts to assess the latchup performance: • A supply overvoltage is applied to each power supply pin • A current injection is applied to each input, output and configurable I/O pin These tests are compliant with EIA/JESD 78A IC latchup standard. Table 52. Electrical sensitivities Symbol LU 6.3.15 Parameter Static latch-up class Conditions TA = +105 °C conforming to JESD78A Class II level A I/O current injection characteristics As a general rule, current injection to the I/O pins, due to external voltage below VSS or above VDD (for standard, 3 V-capable I/O pins) should be avoided during normal product operation. However, in order to give an indication of the robustness of the microcontroller in cases when abnormal injection accidentally happens, susceptibility tests are performed on a sample basis during device characterization. Functional susceptibilty to I/O current injection While a simple application is executed on the device, the device is stressed by injecting current into the I/O pins programmed in floating input mode. While current is injected into the I/O pin, one at a time, the device is checked for functional failures. The failure is indicated by an out of range parameter: ADC error above a certain limit (>5 LSB TUE), out of conventional limits of induced leakage current on adjacent pins (out of –5 µA/+0 µA range), or other functional failure (for example reset, oscillator frequency deviation). Negative induced leakage current is caused by negative injection and positive induced leakage current by positive injection. The test results are given in Table 53. 88/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 53. I/O current injection susceptibility(1) Functional susceptibility Symbol IINJ Description Negative injection Positive injection Injected current on BOOT0 pin –0 NA Injected current on NRST pin –0 NA Injected current on PB3, PB4, PB5, PB6, PB7, PB8, PB9, PC13, PC14, PC15, PH1, PDR_ON, PC0, PC1,PC2, PC3, PD1, PD5, PD6, PD7, PE0, PE2, PE3, PE4, PE5, PE6 –0 NA Injected current on any other FT pin –5 NA Injected current on any other pins –5 +5 Unit mA 1. NA = not applicable. Note: It is recommended to add a Schottky diode (pin to ground) to analog pins which may potentially inject negative currents. 6.3.16 I/O port characteristics General input/output characteristics Unless otherwise specified, the parameters given in Table 54 are derived from tests performed under the conditions summarized in Table 14. All I/Os are CMOS and TTL compliant. Table 54. I/O static characteristics Symbol Parameter FT, and NRST I/O input low level voltage VIL BOOT0 I/O input low level voltage FT and NRST I/O input high level voltage(5) VIH BOOT0 I/O input high level voltage Conditions Min Typ 1.7 V≤ VDD≤ 3.6 V - - 1.75 V≤ VDD ≤ 3.6 V, -40 °C≤ TA ≤ 105 °C - - 1.7 V≤ VDD ≤ 3.6 V, 0 °C≤ TA ≤ 105 °C - 1.7 V≤ VDD≤ 3.6 V 1.75 V≤ VDD ≤ 3.6 V, -40 °C≤ TA ≤ 105 °C 1.7 V≤ VDD ≤ 3.6 V, 0 °C≤ TA ≤ 105 °C Max Unit 0.35VDD–0.04(1) 0.3VDD(2) V 0.1VDD+0.1 - 0.45VDD+0.3(1) 0.4VDD (2) - - - V 0.17VDD+0.7(1) DocID024738 Rev 5 - - 89/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 54. I/O static characteristics (continued) Symbol Parameter FT and NRST I/O input hysteresis BOOT0 I/O input hysteresis RPU RPD CIO(8) Weak pull-up equivalent resistor(6) Typ Max Unit 1.7 V≤ VDD≤ 3.6 V - 10% VDD(3) - V - 100 - mV VSS ≤ VIN ≤ VDD - - ±1 VIN = 5 V - - 3 30 40 50 7 10 14 1.7 V≤ VDD ≤ 3.6 V, 0 °C≤ TA ≤ 105 °C I/O input leakage current (4) I/O FT input leakage current Min 1.75 V≤ VDD ≤ 3.6 V, -40 °C≤ TA ≤ 105 °C VHYS Ilkg Conditions (5) All pins except for PA10 (OTG_FS_ID ) VIN = VSS PA10 (OTG_FS_ID ) All pins except for PA10 Weak pull-down (OTG_FS_ID equivalent ) resistor(7) PA10 (OTG_FS_ID ) I/O pin capacitance kΩ 30 40 50 7 10 14 - 5 - VIN = VDD - 1. Guaranteed by design. 2. Guaranteed by test in production. 3. With a minimum of 200 mV. 4. Leakage could be higher than the maximum value, if negative current is injected on adjacent pins, Refer to Table 53: I/O current injection susceptibility 5. To sustain a voltage higher than VDD +0.3 V, the internal pull-up/pull-down resistors must be disabled. Leakage could be higher than the maximum value, if negative current is injected on adjacent pins.Refer to Table 53: I/O current injection susceptibility 6. Pull-up resistors are designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance is minimum (~10% order). 7. Pull-down resistors are designed with a true resistance in series with a switchable NMOS. This NMOS contribution to the series resistance is minimum (~10% order). 8. Hysteresis voltage between Schmitt trigger switching levels. Guaranteed by characterization. All I/Os are CMOS and TTL compliant (no software configuration required). Their characteristics cover more than the strict CMOS-technology or TTL parameters. The coverage of these requirements for FT I/Os is shown in Figure 30. 90/134 µA DocID024738 Rev 5 pF STM32F401xB STM32F401xC Electrical characteristics Figure 30. FT I/O input characteristics 9,/9,+9 ' 9' L P ,+ Q 9 QW H P LUH 77/UHTXLUHPHQW U 9,+PLQ 9 26 0 & ' 9' Q R WL XF LQ RG +P , SU 9 LQ QV WLR HG VW XOD P L 7H V LJQ HV $UHDQRW Q' R G VH GHWHUPLQHG '' D % 9 D[ ,/P QV9 ODWLR X LP V VLJQ Q'H HGR 77/UHTXLUHPHQW9,/PD[ %DV 9 7HVWHGLQSURGXFWLRQ&026UHTXLUHPHQW9,/PD[ 9'' X HT 9''9 069 Output driving current The GPIOs (general purpose input/outputs) can sink or source up to ±8 mA, and sink or source up to ±20 mA (with a relaxed VOL/VOH) except PC13, PC14 and PC15 which can sink or source up to ±3mA. When using the PC13 to PC15 GPIOs in output mode, the speed should not exceed 2 MHz with a maximum load of 30 pF. In the user application, the number of I/O pins which can drive current must be limited to respect the absolute maximum rating specified in Section 6.2. In particular: • The sum of the currents sourced by all the I/Os on VDD, plus the maximum Run consumption of the MCU sourced on VDD, cannot exceed the absolute maximum rating ΣIVDD (see Table 12). • The sum of the currents sunk by all the I/Os on VSS plus the maximum Run consumption of the MCU sunk on VSS cannot exceed the absolute maximum rating ΣIVSS (see Table 12). Output voltage levels Unless otherwise specified, the parameters given in Table 55 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. All I/Os are CMOS and TTL compliant. DocID024738 Rev 5 91/134 113 Electrical characteristics STM32F401xB STM32F401xC Table 55. Output voltage characteristics Symbol Parameter VOL(1) Output low level voltage for an I/O pin VOH(3) Output high level voltage for an I/O pin VOL (1) Output low level voltage for an I/O pin VOH (3) Output high level voltage for an I/O pin VOL(1) Output low level voltage for an I/O pin VOH(3) Output high level voltage for an I/O pin VOL(1) Output low level voltage for an I/O pin VOH(3) Output high level voltage for an I/O pin VOL(1) Output low level voltage for an I/O pin VOH(3) Output high level voltage for an I/O pin Conditions Min Max CMOS port(2) IIO = +8 mA 2.7 V ≤ VDD ≤ 3.6 V - 0.4 VDD–0.4 - - 0.4 2.4 - TTL port(2) IIO =+8 mA 2.7 V ≤ VDD ≤ 3.6 V IIO = +20 mA 2.7 V ≤ VDD ≤ 3.6 V VDD–1.3(4) 1.3(4) IIO = +6 mA 1.8 V ≤ VDD ≤ 3.6 V VDD–0.4(4) 0.4(4) IIO = +4 mA 1.7 V ≤ VDD ≤ 3.6 V VDD–0.4(5) 0.4(5) - - - Unit V V V V V 1. The IIO current sunk by the device must always respect the absolute maximum rating specified in Table 12. and the sum of IIO (I/O ports and control pins) must not exceed IVSS. 2. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52. 3. The IIO current sourced by the device must always respect the absolute maximum rating specified in Table 12 and the sum of IIO (I/O ports and control pins) must not exceed IVDD. 4. Guaranteed by characterization. 5. Guaranteed by design. Input/output AC characteristics The definition and values of input/output AC characteristics are given in Figure 31 and Table 56, respectively. Unless otherwise specified, the parameters given in Table 56 are derived from tests performed under the ambient temperature and VDD supply voltage conditions summarized in Table 14. Table 56. I/O AC characteristics(1)(2) OSPEEDRy [1:0] bit value(1) Symbol Parameter Conditions fmax(IO)out Maximum frequency(3) 00 tf(IO)out/ tr(IO)out 92/134 Output high to low level fall time and output low to high level rise time Min Typ Max CL = 50 pF, VDD ≥ 2.70 V - - 4 CL = 50 pF, VDD≥ 1.7 V - - 2 CL = 10 pF, VDD ≥ 2.70 V - - 8 CL = 10 pF, VDD ≥ 1.7 V - - 4 CL = 50 pF, VDD = 1.7 V to 3.6 V - - 100 DocID024738 Rev 5 Unit MHz ns STM32F401xB STM32F401xC Electrical characteristics Table 56. I/O AC characteristics(1)(2) (continued) OSPEEDRy [1:0] bit value(1) Symbol Parameter Conditions fmax(IO)out Maximum frequency(3) 01 tf(IO)out/ tr(IO)out Output high to low level fall time and output low to high level rise time fmax(IO)out Maximum frequency(3) 10 tf(IO)out/ tr(IO)out Output high to low level fall time and output low to high level rise time Fmax(IO)out Maximum frequency(3) 11 tf(IO)out/ tr(IO)out - tEXTIpw Output high to low level fall time and output low to high level rise time Min Typ Max CL = 50 pF, VDD ≥ 2.70 V - - 25 CL = 50 pF, VDD ≥ 1.7 V - - 12.5 CL = 10 pF, VDD ≥ 2.70 V - - 50 CL = 10 pF, VDD ≥ 1.7 V - - 20 CL = 50 pF, VDD ≥2.7 V - - 10 CL = 50 pF, VDD ≥ 1.7 V - - 20 CL = 10 pF, VDD ≥ 2.70 V - - 6 CL = 10 pF, VDD ≥ 1.7 V - - 10 CL = 40 pF, VDD ≥ 2.70 V - - 50(4) CL = 40 pF, VDD ≥ 1.7 V - - 25 CL = 10 pF, VDD ≥ 2.70 V - - 100(4) CL = 10 pF, VDD ≥ 1.7 V - - 50(4) CL = 40 pF, VDD≥ 2.70 V - - 6 CL = 40 pF, VDD≥ 1.7 V - - 10 CL = 10 pF, VDD≥ 2.70 V - - 4 CL = 10 pF, VDD≥ 1.7 V - - 6 CL = 30 pF, VDD ≥ 2.70 V - - 100(4) CL = 30 pF, VDD ≥ 1.7 V - - 50(4) CL = 10 pF, VDD ≥ 2.70 V - - 180(4) CL = 10 pF, VDD≥ 1.7 V - - 100(4) CL = 30 pF, VDD ≥ 2.70 V - - 4 CL = 30 pF, VDD ≥ 1.7 V - - 6 CL = 10 pF, VDD≥ 2.70 V - - 2.5 CL = 10 pF, VDD≥ 1.7 V - - 4 10 - - Pulse width of external signals detected by the EXTI controller Unit MHz ns MHz ns MHz ns ns 1. Guaranteed by characterization. 2. The I/O speed is configured using the OSPEEDRy[1:0] bits. Refer to the STM32F4xx reference manual for a description of the GPIOx_SPEEDR GPIO port output speed register. 3. The maximum frequency is defined in Figure 31. 4. For maximum frequencies above 50 MHz and VDD > 2.4 V, the compensation cell should be used. DocID024738 Rev 5 93/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 31. I/O AC characteristics definition (;7(51$/ 287387 21&/ WU,2RXW WI,2RXW 7 0D[LPXPIUHTXHQF\LVDFKLHYHGLIWUWI7DQGLIWKHGXW\F\FOHLV ZKHQORDGHGE\&/VSHFLILHGLQWKHWDEOH³,2$&FKDUDFWHULVWLFV´ 6.3.17 DLG NRST pin characteristics The NRST pin input driver uses CMOS technology. It is connected to a permanent pull-up resistor, RPU (see Table 54). Unless otherwise specified, the parameters given in Table 57 are derived from tests performed under the ambient temperature and VDD supply voltage conditions summarized in Table 14. Refer to Table 54: I/O static characteristics for the values of VIH and VIL for NRST pin. Table 57. NRST pin characteristics Symbol Parameter RPU Weak pull-up equivalent resistor(1) VF(NRST)(2) NRST Input filtered pulse VNF(NRST)(2) NRST Input not filtered pulse TNRST_OUT Generated reset pulse duration Conditions Min Typ Max Unit VIN = VSS 30 40 50 kΩ - - 100 ns VDD > 2.7 V 300 - - ns Internal Reset source 20 - - µs 1. The pull-up is designed with a true resistance in series with a switchable PMOS. This PMOS contribution to the series resistance must be minimum (~10% order). 2. Guaranteed by design. 94/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Figure 32. Recommended NRST pin protection 9'' ([WHUQDO UHVHWFLUFXLW 1567 538 ,QWHUQDO5HVHW )LOWHU ) 670) DLF 1. The reset network protects the device against parasitic resets. 2. The user must ensure that the level on the NRST pin can go below the VIL(NRST) max level specified in Table 57. Otherwise the reset is not taken into account by the device. 6.3.18 TIM timer characteristics The parameters given in Table 58 are guaranteed by design. Refer to Section 6.3.16: I/O port characteristics for details on the input/output alternate function characteristics (output compare, input capture, external clock, PWM output). Table 58. TIMx characteristics(1)(2) Symbol tres(TIM) Parameter Timer resolution time Conditions(3) Min Max Unit AHB/APBx prescaler=1 or 2 or 4, fTIMxCLK = 84 MHz 1 - tTIMxCLK 11.9 - ns 1 - tTIMxCLK 11.9 - ns AHB/APBx prescaler>4, fTIMxCLK = 84 MHz fEXT ResTIM tCOUNTER Timer external clock frequency on CH1 to CH4 f TIMxCLK = 84 MHz 0 fTIMxCLK/2 MHz 0 42 MHz Timer resolution - 16/32 bit 0.0119 780 µs - 65536 × 65536 tTIMxCLK - 51.1 S 16-bit counter clock period when internal clock fTIMxCLK = 84 MHz is selected Maximum possible count tMAX_COUNT with 32-bit counter fTIMxCLK = 84 MHz 1. TIMx is used as a general term to refer to the TIM1 to TIM11 timers. 2. Guaranteed by design. 3. The maximum timer frequency on APB1 is 42 MHz and on APB2 is up to 84 MHz, by setting the TIMPRE bit in the RCC_DCKCFGR register, if APBx prescaler is 1 or 2 or 4, then TIMxCLK = HCKL, otherwise TIMxCLK >= 4x PCLKx. DocID024738 Rev 5 95/134 113 Electrical characteristics 6.3.19 STM32F401xB STM32F401xC Communications interfaces I2C interface characteristics The I2C interface meets the requirements of the standard I2C communication protocol with the following restrictions: the I/O pins SDA and SCL are mapped to are not “true” opendrain. When configured as open-drain, the PMOS connected between the I/O pin and VDD is disabled, but is still present. The I2C characteristics are described in Table59. Refer also to Section 6.3.16: I/O port characteristics for more details on the input/output alternate function characteristics (SDA and SCL). The I2C bus interface supports standard mode (up to 100 kHz) and fast mode (up to 400 kHz). The I2C bus frequency can be increased up to 1 MHz. For more details about the complete solution, please contact your local ST sales representative. Table 59. I2C characteristics Standard mode I2C(1) Symbol Fast mode I2C(1)(2) Parameter Unit Min Max Min Max tw(SCLL) SCL clock low time 4.7 - 1.3 - tw(SCLH) SCL clock high time 4.0 - 0.6 - tsu(SDA) SDA setup time 250 - 100 - th(SDA) SDA data hold time 0 - 0 900(3) tr(SDA) tr(SCL) SDA and SCL rise time - 1000 - 300 tf(SDA) tf(SCL) SDA and SCL fall time - 300 - 300 th(STA) Start condition hold time 4.0 - 0.6 - tsu(STA) Repeated Start condition setup time 4.7 - 0.6 - tsu(STO) Stop condition setup time 4.0 - 0.6 - µs Stop to Start condition time (bus free) 4.7 - 1.3 - µs tw(STO:STA) µs ns µs tSP Pulse width of the spikes that are suppressed by the analog filter for standard fast mode 0 50(4) 0 50(4) ns Cb Capacitive load for each bus line - 400 - 400 pF 1. Guaranteed by design. 2. fPCLK1 must be at least 2 MHz to achieve standard mode I2C frequencies. It must be at least 4 MHz to achieve fast mode I2C frequencies, and a multiple of 10 MHz to reach the 400 kHz maximum I2C fast mode clock. 3. The maximum data hold time has only to be met if the interface does not stretch the low period of SCL signal. 4. The minimum width of the spikes filtered by the analog filter is above tSP (max). 96/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Figure 33. I2C bus AC waveforms and measurement circuit s ''B,& s ''B,& 53 53 670)[[ 56 6'$ ,ð&EXV 56 6&/ 67$575(3($7(' 67$57 67$57 WVX67$ 6'$ WI6'$ WU6'$ WK67$ WVX6'$ WZ67267$ 6723 WK6'$ WZ6&/+ 6&/ WU6&/ WZ6&// WI6&/ WVX672 DLF 1. RS = series protection resistor. 2. RP = external pull-up resistor. 3. VDD_I2C is the I2C bus power supply. Table 60. SCL frequency (fPCLK1= 42 MHz, VDD = VDD_I2C = 3.3 V)(1)(2) I2C_CCR value fSCL (kHz) RP = 4.7 kΩ 400 0x8019 300 0x8021 200 0x8032 100 0x0096 50 0x012C 20 0x02EE 1. RP = External pull-up resistance, fSCL = I2 C speed 2. For speeds around 200 kHz, the tolerance on the achieved speed is of ±5%. For other speed ranges, the tolerance on the achieved speed is ±2%. These variations depend on the accuracy of the external components used to design the application. DocID024738 Rev 5 97/134 113 Electrical characteristics STM32F401xB STM32F401xC SPI interface characteristics Unless otherwise specified, the parameters given in Table 61 for the SPI interface are derived from tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 14, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5VDD Refer to Section 6.3.16: I/O port characteristics for more details on the input/output alternate function characteristics (NSS, SCK, MOSI, MISO for SPI). Table 61. SPI dynamic characteristics(1) Symbol fSCK 1/tc(SCK) Duty(SCK) Parameter SPI clock frequency Conditions Min Typ Max Master mode, SPI1/4, 2.7 V < VDD < 3.6 V 42 Slave mode, SPI1/4, 2.7 V < VDD < 3.6 V 42 Slave transmitter/full-duplex mode, SPI1/4, 2.7 V < VDD < 3.6 V - - 38(2) Master mode, SPI1/2/3/4, 1.7 V < VDD < 3.6 V 21 Slave mode, SPI1/2/3/4, 1.7 V < VDD < 3.6 V 21 Duty cycle of SPI clock Slave mode frequency Unit MHz 30 50 70 % TPCLK−1.5 TPCLK TPCLK+1.5 ns tw(SCKH) tw(SCKL) SCK high and low time Master mode, SPI presc = 2 tsu(NSS) NSS setup time Slave mode, SPI presc = 2 4TPCLK - - ns th(NSS) NSS hold time Slave mode, SPI presc = 2 2TPCLK - - ns Master mode 0 - - ns Slave mode 2.5 - - ns Master mode 6 - - ns Slave mode 2.5 - - ns tsu(MI) tsu(SI) th(MI) th(SI) Data input setup time Data input hold time ta(SO) Data output access time Slave mode 9 - 20 ns tdis(SO) Data output disable time Slave mode 8 - 13 ns Slave mode (after enable edge), 2.7 V < VDD < 3.6 V - 9.5 13 ns Slave mode (after enable edge), 1.7 V < VDD < 3.6 V - 9.5 17 ns Slave mode (after enable edge), 2.7 V < VDD < 3.6 V 5.5 - - ns Slave mode (after enable edge), 1.7 V < VDD < 3.6 V 3.5 - - ns tv(SO) th(SO) 98/134 Data output valid time Data output hold time DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics Table 61. SPI dynamic characteristics(1) (continued) Symbol Parameter tv(MO) Data output valid time th(MO) Conditions Data output hold time Min Typ Max Unit Master mode (after enable edge) - 3 5 ns Master mode (after enable edge) 2 - - ns 1. Guaranteed by characterization. 2. Maximum frequency in Slave transmitter mode is determined by the sum of tv(SO) and tsu(MI) which has to fit into SCK low or high phase preceding the SCK sampling edge. This value can be achieved when the SPI communicates with a master having tsu(MI) = 0 while Duty(SCK) = 50% Figure 34. SPI timing diagram - slave mode and CPHA = 0 166LQSXW 6&.,QSXW W68166 &3+$ &32/ WK166 WF6&. WZ6&.+ WZ6&./ &3+$ &32/ W962 WD62 0,62 287387 WU6&. WI6&. WK62 06%287 %,7287 06%,1 %,7,1 WGLV62 /6%287 WVX6, 026, ,1387 /6%,1 WK6, DLF Figure 35. SPI timing diagram - slave mode and CPHA = 1(1) 166LQSXW 6&.LQSXW W68166 &3+$ &32/ &3+$ &32/ WZ6&.+ WZ6&./ WK62 WY62 WD62 0,62 287387 06%287 %,7287 WU6&. WI6&. WGLV62 /6%287 WK6, WVX6, 026, ,1387 WK166 WF6&. 06%,1 %,7,1 /6%,1 DLE DocID024738 Rev 5 99/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 36. SPI timing diagram - master mode(1) +LJK 166LQSXW 6&.2XWSXW &3+$ &32/ 6&.2XWSXW WF6&. &3+$ &32/ &3+$ &32/ &3+$ &32/ WVX0, 0,62 ,13 87 WZ6&.+ WZ6&./ WU6&. WI6&. %,7,1 06%,1 /6%,1 WK0, 026, 287387 06%287 WY02 % , 7287 /6%287 WK02 DLF 100/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics I2S interface characteristics Unless otherwise specified, the parameters given in Table 62 for the I2S interface are derived from tests performed under the ambient temperature, fPCLKx frequency and VDD supply voltage conditions summarized in Table 14, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5VDD Refer to Section 6.3.16: I/O port characteristics for more details on the input/output alternate function characteristics (CK, SD, WS). Table 62. I2S dynamic characteristics(1) Symbol Parameter fMCK I2S Main clock output fCK I2S clock frequency DCK Conditions Min Max Unit 256x8K 256xFs(2) MHz Master data: 32 bits - 64xFs Slave data: 32 bits - 64xFs 30 70 - I2S clock frequency duty cycle Slave receiver tv(WS) WS valid time Master mode 0 6 th(WS) WS hold time Master mode 0 - tsu(WS) WS setup time Slave mode 1 - th(WS) WS hold time Slave mode 0 - Master receiver 7.5 - Slave receiver 2 - Master receiver 0 - Slave receiver 0 - Slave transmitter (after enable edge) - 27 Master transmitter (after enable edge) - 20 Master transmitter (after enable edge) 2.5 - tsu(SD_MR) tsu(SD_SR) th(SD_MR) th(SD_SR) tv(SD_ST) th(SD_ST) Data input setup time Data input hold time Data output valid time tv(SD_MT) th(SD_MT) Data output hold time MHz % ns 1. Guaranteed by characterization. 2. The maximum value of 256xFs is 42 MHz (APB1 maximum frequency). Note: Refer to the I2S section of the reference manual for more details on the sampling frequency (FS). fMCK, fCK, and DCK values reflect only the digital peripheral behavior. The values of these parameters might be slightly impacted by the source clock precision. DCK depends mainly on the value of ODD bit. The digital contribution leads to a minimum value of (I2SDIV/(2*I2SDIV+ODD) and a maximum value of (I2SDIV+ODD)/(2*I2SDIV+ODD). FS maximum value is supported for each mode/condition. DocID024738 Rev 5 101/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 37. I2S slave timing diagram (Philips protocol)(1) tc(CK) CK Input CPOL = 0 CPOL = 1 tw(CKH) th(WS) tw(CKL) WS input tv(SD_ST) tsu(WS) SDtransmit LSB transmit(2) MSB transmit Bitn transmit tsu(SD_SR) LSB receive(2) SDreceive th(SD_ST) LSB transmit th(SD_SR) MSB receive Bitn receive LSB receive ai14881b 1. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first byte. Figure 38. I2S master timing diagram (Philips protocol)(1) tf(CK) tr(CK) CK output tc(CK) CPOL = 0 tw(CKH) CPOL = 1 tv(WS) th(WS) tw(CKL) WS output tv(SD_MT) SDtransmit LSB transmit(2) MSB transmit SDreceive LSB LSB transmit th(SD_MR) tsu(SD_MR) receive(2) Bitn transmit th(SD_MT) MSB receive Bitn receive LSB receive ai14884b 1. LSB transmit/receive of the previously transmitted byte. No LSB transmit/receive is sent before the first byte. 102/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics USB OTG full speed (FS) characteristics This interface is present in USB OTG FS controller. Table 63. USB OTG FS startup time Symbol tSTARTUP(1) Parameter USB OTG FS transceiver startup time Max Unit 1 µs 1. Guaranteed by design. Table 64. USB OTG FS DC electrical characteristics Symbol VDD Input levels Parameter Conditions USB OTG FS operating voltage Min.(1) Typ. Max.(1) Unit 3.0(2) - 3.6 VDI(3) Differential input sensitivity I(USB_FS_DP/DM) 0.2 - - VCM(3) Differential common mode range Includes VDI range 0.8 - 2.5 VSE(3) Single ended receiver threshold 1.3 - 2.0 VOL Static output level low RL of 1.5 kΩ to 3.6 V(4) - - 0.3 VOH Static output level high RL of 15 kΩ to VSS(4) 2.8 - 3.6 17 21 24 0.65 1.1 2.0 Output levels RPD PA11, PA12 (USB_FS_DM/DP) VIN = VDD PA9 (OTG_FS_VBUS) RPU PA11, PA12 (USB_FS_DM/DP) VIN = VSS 1.5 1.8 2.1 PA9 (OTG_FS_VBUS) VIN = VSS 0.25 0.37 0.55 V V V kΩ 1. All the voltages are measured from the local ground potential. 2. The USB OTG FS functionality is ensured down to 2.7 V but not the full USB full speed electrical characteristics which are degraded in the 2.7-to-3.0 V VDD voltage range. 3. Guaranteed by design. 4. RL is the load connected on the USB OTG FS drivers. Note: When VBUS sensing feature is enabled, PA9 should be left at their default state (floating input), not as alternate function. A typical 200 µA current consumption of the embedded sensing block (current to voltage conversion to determine the different sessions) can be observed on PA9 when the feature is enabled. DocID024738 Rev 5 103/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 39. USB OTG FS timings: definition of data signal rise and fall time Crossover points Differen tial Data L ines VCRS VS S tr tf ai14137 Table 65. USB OTG FS electrical characteristics(1) Driver characteristics Symbol Parameter Rise time(2) tr tf Fall trfm time(2) Conditions Min Max Unit CL = 50 pF 4 20 ns CL = 50 pF 4 20 ns tr/tf 90 110 % 1.3 2.0 V Rise/ fall time matching VCRS Output signal crossover voltage 1. Guaranteed by design. 2. Measured from 10% to 90% of the data signal. For more detailed informations, please refer to USB Specification - Chapter 7 (version 2.0). 6.3.20 12-bit ADC characteristics Unless otherwise specified, the parameters given in Table 66 are derived from tests performed under the ambient temperature, fPCLK2 frequency and VDDA supply voltage conditions summarized in Table 14. Table 66. ADC characteristics Symbol VDDA VREF+ Parameter Power supply Positive reference voltage Conditions Min Typ Max Unit 1.7(1) - 3.6 V (1) - VDDA V 0.6 15 18 MHz VDDA = 2.4 to 3.6 V 0.6 30 36 MHz fADC = 30 MHz, 12-bit resolution - - 1764 kHz - - 17 1/fADC 0 (VSSA or VREFtied to ground) - VREF+ V - - 50 kΩ - - 6 kΩ - 4 7 pF VDDA − VREF+ < 1.2 V (1) fADC fTRIG(2) VAIN RAIN(2) ADC clock frequency External trigger frequency VDDA = 1.7 to 2.4 V Conversion voltage range(3) External input impedance See Equation 1 for details RADC(2)(4) Sampling switch resistance CADC(2) 104/134 Internal sample and hold capacitor DocID024738 Rev 5 1.7 STM32F401xB STM32F401xC Electrical characteristics Table 66. ADC characteristics (continued) Symbol Parameter Conditions Min Typ Max Unit - - 0.100 µs - - 3(5) 1/fADC - - 0.067 µs - - 2(5) 1/fADC 0.100 - 16 µs 3 - 480 1/fADC - 2 3 µs fADC = 30 MHz 12-bit resolution 0.50 - 16.40 µs fADC = 30 MHz 10-bit resolution 0.43 - 16.34 µs fADC = 30 MHz 8-bit resolution 0.37 - 16.27 µs fADC = 30 MHz 6-bit resolution 0.30 - 16.20 µs tlat(2) Injection trigger conversion latency fADC = 30 MHz tlatr(2) Regular trigger conversion latency fADC = 30 MHz tS(2) Sampling time tSTAB(2) Power-up time tCONV(2) Total conversion time (including sampling time) fADC = 30 MHz 9 to 492 (tS for sampling +n-bit resolution for successive approximation) Sampling rate fS(2) (fADC = 30 MHz, and tS = 3 ADC cycles) 1/fADC 12-bit resolution Single ADC - - 2 Msps 12-bit resolution Interleave Dual ADC mode - - 3.75 Msps 12-bit resolution Interleave Triple ADC mode - - 6 Msps IVREF+(2) ADC VREF DC current consumption in conversion mode - 300 500 µA IVDDA(2) ADC VDDA DC current consumption in conversion mode - 1.6 1.8 mA 1. VDDA minimum value of 1.7 V is possible with the use of an external power supply supervisor (refer to Section 3.14.2: Internal reset OFF). 2. Guaranteed by characterization. 3. VREF+ is internally connected to VDDA and VREF- is internally connected to VSSA. 4. RADC maximum value is given for VDD=1.7 V, and minimum value for VDD=3.3 V. 5. For external triggers, a delay of 1/fPCLK2 must be added to the latency specified in Table 66. DocID024738 Rev 5 105/134 113 Electrical characteristics STM32F401xB STM32F401xC Equation 1: RAIN max formula R AIN ( k – 0,5 ) - – R ADC = ------------------------------------------------------------N+2 f ADC × C ADC × ln ( 2 ) The formula above (Equation 1) is used to determine the maximum external impedance allowed for an error below 1/4 of LSB. N = 12 (from 12-bit resolution) and k is the number of sampling periods defined in the ADC_SMPR1 register. Table 67. ADC accuracy at fADC = 18 MHz Symbol ET Parameter Test conditions Total unadjusted error EO Offset error EG Gain error ED Differential linearity error EL Integral linearity error fADC =18 MHz VDDA = 1.7 to 3.6 V VREF = 1.7 to 3.6 V VDDA − VREF < 1.2 V Typ Max(1) ±3 ±4 ±2 ±3 ±1 ±3 ±1 ±2 ±2 ±3 Unit LSB 1. Guaranteed by characterization. Table 68. ADC accuracy at fADC = 30 MHz Symbol ET Parameter Test conditions Total unadjusted error EO Offset error EG Gain error ED Differential linearity error EL Integral linearity error fADC = 30 MHz, RAIN < 10 kΩ, VDDA = 2.4 to 3.6 V, VREF = 1.7 to 3.6 V, VDDA − VREF < 1.2 V Typ Max(1) ±2 ±5 ±1.5 ±2.5 ±1.5 ±3 ±1 ±2 ±1.5 ±3 Unit LSB 1. Guaranteed by characterization. Table 69. ADC accuracy at fADC = 36 MHz Symbol ET Parameter Test conditions Total unadjusted error EO Offset error EG Gain error ED Differential linearity error EL Integral linearity error fADC =36 MHz, VDDA = 2.4 to 3.6 V, VREF = 1.7 to 3.6 V VDDA − VREF < 1.2 V 1. Guaranteed by characterization. 106/134 DocID024738 Rev 5 Typ Max(1) ±4 ±7 ±2 ±3 ±3 ±6 ±2 ±3 ±3 ±6 Unit LSB STM32F401xB STM32F401xC Electrical characteristics Table 70. ADC dynamic accuracy at fADC = 18 MHz - limited test conditions(1) Symbol Parameter Test conditions ENOB Effective number of bits SINAD Signal-to-noise and distortion ratio SNR Signal-to-noise ratio THD Total harmonic distortion fADC =18 MHz VDDA = VREF+= 1.7 V Input Frequency = 20 KHz Temperature = 25 °C Min Typ Max Unit 10.3 10.4 - bits 64 64.2 - 64 65 - -67 -72 - dB 1. Guaranteed by characterization. Table 71. ADC dynamic accuracy at fADC = 36 MHz - limited test conditions(1) Symbol Parameter ENOB Effective number of bits SINAD Signal-to noise and distortion ratio SNR Signal-to noise ratio THD Total harmonic distortion Test conditions fADC = 36 MHz VDDA = VREF+ = 3.3 V Input Frequency = 20 KHz Temperature = 25 °C Min Typ Max Unit 10.6 10.8 - bits 66 67 - 64 68 - -70 -72 - dB 1. Guaranteed by characterization. Note: ADC accuracy vs. negative injection current: injecting a negative current on any analog input pins should be avoided as this significantly reduces the accuracy of the conversion being performed on another analog input. It is recommended to add a Schottky diode (pin to ground) to analog pins which may potentially inject negative currents. Any positive injection current within the limits specified for IINJ(PIN) and ΣIINJ(PIN) in Section 6.3.16 does not affect the ADC accuracy. DocID024738 Rev 5 107/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 40. ADC accuracy characteristics 6 $$! 6 2%& ;,3" )$%!, ORDEPENDINGONPACKAGE= %' %4 %/ %, %$ , 3")$%!, 6 33! 6$$! AIC 1. See also Table 68. 2. Example of an actual transfer curve. 3. Ideal transfer curve. 4. End point correlation line. 5. ET = Total Unadjusted Error: maximum deviation between the actual and the ideal transfer curves. EO = Offset Error: deviation between the first actual transition and the first ideal one. EG = Gain Error: deviation between the last ideal transition and the last actual one. ED = Differential Linearity Error: maximum deviation between actual steps and the ideal one. EL = Integral Linearity Error: maximum deviation between any actual transition and the end point correlation line. Figure 41. Typical connection diagram using the ADC 670) 9'' 5$,1 $,1[ 9$,1 &SDUDVLWLF 6DPSOHDQGKROG$'& FRQYHUWHU 97 9 5$'& 97 9 ,/$ ELW FRQYHUWHU & $'& DL 1. Refer to Table 66 for the values of RAIN, RADC and CADC. 2. Cparasitic represents the capacitance of the PCB (dependent on soldering and PCB layout quality) plus the pad capacitance (roughly 5 pF). A high Cparasitic value downgrades conversion accuracy. To remedy this, fADC should be reduced. 108/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Electrical characteristics General PCB design guidelines Power supply decoupling should be performed as shown in Figure 42 or Figure 43, depending on whether VREF+ is connected to VDDA or not. The 10 nF capacitors should be ceramic (good quality). They should be placed them as close as possible to the chip. Figure 42. Power supply and reference decoupling (VREF+ not connected to VDDA) 670) 95() )Q) 9''$ )Q) 966$95() DLE 1. VREF+ and VREF- inputs are both available on UFBGA100. VREF+ is also available on LQFP100. When VREF+ and VREF- are not available, they are internally connected to VDDA and VSSA. DocID024738 Rev 5 109/134 113 Electrical characteristics STM32F401xB STM32F401xC Figure 43. Power supply and reference decoupling (VREF+ connected to VDDA) 670) 95()9''$ )Q) 95()966$ DLF 1. VREF+ and VREF- inputs are both available on UFBGA100. VREF+ is also available on LQFP100. When VREF+ and VREF- are not available, they are internally connected to VDDA and VSSA. 6.3.21 Temperature sensor characteristics Table 72. Temperature sensor characteristics Symbol TL(1) Parameter Min Typ Max Unit - ±1 ±2 °C - 2.5 - mV/°C Voltage at 25 °C - 0.76 - V Startup time - 6 10 µs 10 - - µs VSENSE linearity with temperature Avg_Slope(1) Average slope V25(1) tSTART (2) TS_temp(2) ADC sampling time when reading the temperature (1 °C accuracy) 1. Guaranteed by characterization. 2. Guaranteed by design. Table 73. Temperature sensor calibration values Symbol Parameter Memory address TS_CAL1 TS ADC raw data acquired at temperature of 30 °C, VDDA= 3.3 V 0x1FFF 7A2C - 0x1FFF 7A2D TS_CAL2 TS ADC raw data acquired at temperature of 110 °C, VDDA= 3.3 V 0x1FFF 7A2E - 0x1FFF 7A2F 110/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 6.3.22 Electrical characteristics VBAT monitoring characteristics Table 74. VBAT monitoring characteristics Symbol Parameter Min Typ Max Unit KΩ R Resistor bridge for VBAT - 50 - Q Ratio on VBAT measurement - 4 - Error on Q –1 - +1 % ADC sampling time when reading the VBAT 1 mV accuracy 5 - - µs (1) Er TS_vbat(2)(2) 1. Guaranteed by design. 2. Shortest sampling time can be determined in the application by multiple iterations. 6.3.23 Embedded reference voltage The parameters given in Table 75 are derived from tests performed under ambient temperature and VDD supply voltage conditions summarized in Table 14. Table 75. Embedded internal reference voltage Symbol Parameter Internal reference voltage VREFINT Conditions Min Typ Max Unit –40 °C < TA < +105 °C 1.18 1.21 1.24 V - 10 - - µs VDD = 3V ± 10mV - 3 5 mV ADC sampling time when reading the internal reference voltage TS_vrefint(1) Internal reference voltage spread over the temperature range VRERINT_s(2) TCoeff(2) Temperature coefficient - - 30 50 ppm/°C tSTART(2) Startup time - - 6 10 µs 1. Shortest sampling time can be determined in the application by multiple iterations. 2. Guaranteed by design. Table 76. Internal reference voltage calibration values 6.3.24 Symbol Parameter Memory address VREFIN_CAL Raw data acquired at temperature of 30 °C VDDA = 3.3 V 0x1FFF 7A2A - 0x1FFF 7A2B SD/SDIO MMC card host interface (SDIO) characteristics Unless otherwise specified, the parameters given in Table 77 for the SDIO/MMC interface are derived from tests performed under the ambient temperature, fPCLK2 frequency and VDD supply voltage conditions summarized in Table 14, with the following configuration: • Output speed is set to OSPEEDRy[1:0] = 10 • Capacitive load C = 30 pF • Measurement points are done at CMOS levels: 0.5VDD DocID024738 Rev 5 111/134 113 Electrical characteristics STM32F401xB STM32F401xC Refer to Section 6.3.16: I/O port characteristics for more details on the input/output characteristics. Figure 44. SDIO high-speed mode tf tr tC tW(CKH) tW(CKL) CK tOV tOH D, CMD (output) tISU tIH D, CMD (input) ai14887 Figure 45. SD default mode CK tOVD tOHD D, CMD (output) ai14888 Table 77. Dynamic characteristics: SD / MMC characteristics(1)(2) Symbol Parameter fPP Conditions Min Typ Max Unit Clock frequency in data transfer mode 0 - 48 MHz - SDIO_CK/fPCLK2 frequency ratio - - 8/3 - tW(CKL) Clock low time fpp = 48MHz 8.5 9 - tW(CKH) Clock high time fpp = 48MHz 8.3 10 - ns CMD, D inputs (referenced to CK) in MMC and SD HS mode tISU Input setup time HS fpp = 48MHz 3.5 - - tIH Input hold time HS fpp = 48MHz 0 - - ns CMD, D outputs (referenced to CK) in MMC and SD HS mode tOV Output valid time HS fpp = 48MHz - 4.5 7 tOH Output hold time HS fpp = 48MHz 3 - - 112/134 DocID024738 Rev 5 ns STM32F401xB STM32F401xC Electrical characteristics Table 77. Dynamic characteristics: SD / MMC characteristics(1)(2) (continued) Symbol Parameter Conditions Min Typ Max Unit CMD, D inputs (referenced to CK) in SD default mode tISUD Input setup time SD fpp = 24MHz 1.5 - - tIHD Input hold time SD fpp = 24MHz 0.5 - - ns CMD, D outputs (referenced to CK) in SD default mode tOVD Output valid default time SD fpp =24MHz - 4.5 6.5 tOHD Output hold default time SD fpp =24MHz 3.5 - - ns 1. Data based on characterization results, not tested in production. 2. VDD = 2.7 to 3.6 V. 6.3.25 RTC characteristics Table 78. RTC characteristics Symbol Parameter - fPCLK1/RTCCLK frequency ratio Conditions Any read/write operation from/to an RTC register DocID024738 Rev 5 Min Max 4 - 113/134 113 Package information 7 STM32F401xB STM32F401xC Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 7.1 WLCSP49 2.965x2.965 mm package information Figure 46. WLCSP49 - 0.4 mm pitch wafer level chip scale package outline E & !BALLLOCATION ! ' $ETAIL! E % E ' ! ! E "UMPSIDE 3IDEVIEW ! &RONTVIEW "UMP $ ! EEE : B % !ORIENTATION REFERENCE 7AFERBACKSIDE $ETAIL! ROTATED !6!?-%?6 1. Drawing is not to scale. 114/134 .OTE 3EATINGPLANE .OTE DocID024738 Rev 5 STM32F401xB STM32F401xC Package information Table 79. WLCSP49 - 0.4 mm pitch wafer level chip scale package mechanical data inches(1) millimeters Symbol Min Typ Max Min Typ Max A 0.525 0.555 0.585 0.0207 0.0219 0.0230 A1 - 0.175 - - 0.0069 - A2 - 0.380 - - 0.0150 - A3(2) - 0.025 - - 0.0010 - (3) 0.220 0.250 0.280 0.0087 0.0098 0.0110 D 2.930 2.965 3.000 0.1154 0.1167 0.1181 E 2.930 2.965 3.000 0.1154 0.1167 0.1181 e - 0.400 - - 0.0157 - e1 - 2.400 - - 0.0945 - e2 - 2.400 - - 0.0945 - F - 0.2825 - - 0.0111 - G - 0.2825 - - 0.0111 - aaa - 0.100 - - 0.0039 - bbb - 0.100 - - 0.0039 - ccc - 0.100 - - 0.0039 - ddd - 0.050 - - 0.0020 - eee - 0.050 - - 0.0020 - b 1. Values in inches are converted from mm and rounded to 4 decimal digits. 2. Back side coating. 3. Dimension is measured at the maximum bump diameter parallel to primary datum Z. Figure 47. WLCSP49 0.4 mm pitch wafer level chip scale recommended footprint 'SDG 'VP DocID024738 Rev 5 069 115/134 130 Package information STM32F401xB STM32F401xC Table 80. WLCSP49 recommended PCB design rules (0.4 mm pitch) Dimension Recommended values Pitch 0.4 mm Dpad 260 µm max. (circular) 220 µm recommended Dsm 300 µm min. (for 260 µm diameter pad) PCB pad design Non-solder mask defined via underbump allowed WLCSP49 device marking The following figure gives an example of topside marking orientation versus ball A1 identifier location. Figure 48. WLCSP49 marking example (package top view) %DOO$ LQGHQWLILHU 3URGXFWLGHQWLILFDWLRQ )%< 5HYLVLRQFRGH 'DWHFRGH < :: 5 06Y9 1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. 116/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 7.2 Package information UFQFPN48 package information Figure 49. UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package outline 3LQLGHQWLILHU ODVHUPDUNLQJDUHD ' $ ( ( 7 GGG 6HDWLQJ SODQH $ E H 'HWDLO< ' ([SRVHGSDG DUHD < ' / &[ SLQFRUQHU 5W\S 'HWDLO= ( = $%B0(B9 1. Drawing is not to scale. 2. All leads/pads should also be soldered to the PCB to improve the lead/pad solder joint life. 3. There is an exposed die pad on the underside of the UFQFPN package. It is recommended to connect and solder this back-side pad to PCB ground. Table 81. UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package mechanical data inches(1) millimeters Symbol Min. Typ. Max. Min. Typ. Max. A 0.500 0.550 0.600 0.0197 0.0217 0.0236 A1 0.000 0.020 0.050 0.0000 0.0008 0.0020 D 6.900 7.000 7.100 0.2717 0.2756 0.2795 E 6.900 7.000 7.100 0.2717 0.2756 0.2795 D2 5.500 5.600 5.700 0.2165 0.2205 0.2244 DocID024738 Rev 5 117/134 130 Package information STM32F401xB STM32F401xC Table 81. UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package mechanical data (continued) inches(1) millimeters Symbol Min. Typ. Max. Min. Typ. Max. E2 5.500 5.600 5.700 0.2165 0.2205 0.2244 L 0.300 0.400 0.500 0.0118 0.0157 0.0197 T - 0.152 - - 0.0060 - b 0.200 0.250 0.300 0.0079 0.0098 0.0118 e - 0.500 - - 0.0197 - ddd - - 0.080 - - 0.0031 1. Values in inches are converted from mm and rounded to 4 decimal digits. Figure 50. UFQFPN48 - 48-lead, 7 x 7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat recommended footprint 1. Dimensions are in millimeters. 118/134 DocID024738 Rev 5 !"?&0?6 STM32F401xB STM32F401xC Package information UFQFPN48 device marking The following figure gives an example of topside marking orientation versus pin 1 identifier location. Figure 51. UFQFPN48 marking example (top view) 3URGXFWLGHQWLILFDWLRQ 670) &%8 'DWHFRGH < :: 3LQLGHQWLILHU 5HYLVLRQFRGH 5 0VY9 1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. DocID024738 Rev 5 119/134 130 Package information 7.3 STM32F401xB STM32F401xC LQFP64 package information Figure 52. LQFP64 - 64-pin, 10 x 10 mm, 64-pin low-profile quad flat package outline PP *$8*(3/$1( F $ $ $ 6($7,1*3/$1( & $ FFF & ' ' ' . / / 3,1 ,'(17,),&$7,21 ( ( ( E H :B0(B9 1. Drawing is not to scale. 120/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Package information Table 82. LQFP64 - 64-pin, 10 x 10 mm, 64-pin low-profile quad flat package mechanical data inches(1) millimeters Symbol Min. Typ. Max. Min. Typ. Max. A - - 1.600 - - 0.0630 A1 0.050 - 0.150 0.0020 - 0.0059 A2 1.350 1.400 1.450 0.0531 0.0551 0.0571 b 0.170 0.220 0.270 0.0067 0.0087 0.0106 c 0.090 - 0.200 0.0035 - 0.0079 D - 12.000 - - 0.4724 - D1 - 10.000 - - 0.3937 - E - 12.000 - - 0.4724 - E1 - 10.000 - - 0.3937 - E3 - 7.5000 - - 0.2953 - e - 0.500 - - 0.0197 - K 0° 3.5° 7° 0° 3.5° 7° L 0.450 0.600 0.750 0.0177 0.0236 0.0295 L1 - 1.000 - - 0.0394 - ccc - - 0.080 - - 0.0031 1. Values in inches are converted from mm and rounded to 4 decimal digits. Figure 53. LQFP64 recommended footprint AIC 1. Dimensions are in millimeters. DocID024738 Rev 5 121/134 130 Package information STM32F401xB STM32F401xC LQFP64 device marking The following figure gives an example of topside marking orientation versus pin 1 identifier location. Figure 54. LQFP64 marking example (top view) 5HYLVLRQFRGH 3URGXFWLGHQWLILFDWLRQ 5 670) 5%7 'DWHFRGH < :: 3LQ LQGHQWLILHU 06Y9 1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. 122/134 DocID024738 Rev 5 STM32F401xB STM32F401xC LQFP100 package information Figure 55. LQFP100 - 100-pin, 14 x 14 mm, 100-pin low-profile quad flat package outline MM C ! ! 3%!4).'0,!.% # ! '!5'%0,!.% $ , $ ! + CCC # , $ 0). )$%.4)&)#!4)/. % % % B 7.4 Package information E ,?-%?6 1. Drawing is not to scale. DocID024738 Rev 5 123/134 130 Package information STM32F401xB STM32F401xC Table 83. LQPF100- 100-pin, 14 x 14 mm, 100-pin low-profile quad flat package mechanical data inches(1) millimeters Symbol Min. Typ. Max. Min. Typ. Max. A - - 1.60 - - 0.063 A1 0.050 - 0.150 0.002 - 0.0059 A2 1.350 1.40 1.450 0.0531 0.0551 0.0571 b 0.170 0.220 0.270 0.0067 0.0087 0.0106 c 0.090 - 0.200 0.0035 - 0.0079 D 15.800 16.000 16.200 0.622 0.6299 0.6378 D1 13.800 14.000 14.200 0.5433 0.5512 0.5591 D3 - 12.000 - - 0.4724 - E 15.800 16.000 16.200 0.622 0.6299 0.6378 E1 13.800 14.000 14.200 0.5433 0.5512 0.5591 E3 - 12.000 - - 0.4724 - e - 0.500 - - 0.0197 - L 0.450 0.600 0.750 0.0177 0.0236 0.0295 L1 - 1.000 - - 0.0394 - K 0.0° 3.5° 7.0° 0.0° 3.5° 7.0° ccc 0.080 0.0031 1. Values in inches are converted from mm and rounded to 4 decimal digits. 124/134 DocID024738 Rev 5 STM32F401xB STM32F401xC Package information Figure 56. LQFP100 recommended footprint AIC 1. Dimensions are in millimeters. LQFP100 device marking The following figure gives an example of topside marking orientation versus pin 1 identifier location. Figure 57. LQPF100 marking example (top view) 3URGXFWLGHQWLILFDWLRQ (6) 9%75 5HYLVLRQFRGH 'DWHFRGH < :: 3LQ LQGHQWLILHU 06Y9 1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. DocID024738 Rev 5 125/134 130 Package information 7.5 STM32F401xB STM32F401xC UFBGA100 package information Figure 58. UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package outline = 6HDWLQJSODQH GGG = $ $ $ $ $ ( H $EDOO $EDOO LGHQWLILHU LQGH[DUHD ) ; ( $ ) ' ' H < 0 %277209,(: EEDOOV HHH 0 = < ; III 0 = 7239,(: $&B0(B9 1. Drawing is not to scale. Table 84. UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package mechanical data inches(1) millimeters Symbol 126/134 Min. Typ. Max. Min. Typ. Max. A 0.460 0.530 0.600 0.0181 0.0209 0.0236 A1 0.050 0.080 0.110 0.0020 0.0031 0.0043 A2 0.400 0.450 0.500 0.0157 0.0177 0.0197 A3 - 0.130 - - 0.0051 - A4 0.270 0.320 0.370 0.0106 0.0126 0.0146 b 0.200 0.250 0.300 0.0079 0.0098 0.0118 D 6.950 7.000 7.050 0.2736 0.2756 0.2776 D1 5.450 5.500 5.550 0.2146 0.2165 0.2185 E 6.950 7.000 7.050 0.2736 0.2756 0.2776 E1 5.450 5.500 5.550 0.2146 0.2165 0.2185 e - 0.500 - - 0.0197 - F 0.700 0.750 0.800 0.0276 0.0295 0.0315 DocID024738 Rev 5 STM32F401xB STM32F401xC Package information Table 84. UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package mechanical data (continued) inches(1) millimeters Symbol Min. Typ. Max. Min. Typ. Max. ddd - - 0.100 - - 0.0039 eee - - 0.150 - - 0.0059 fff - - 0.050 - - 0.0020 1. Values in inches are converted from mm and rounded to 4 decimal digits. Figure 59. UFGBA100 recommended footprint 'SDG 'VP $&B)3B9 Table 85. UFBGA100 recommended PCB design rules (0.5 mm pitch BGA) Dimension Recommended values Pitch 0.5 Dpad 0.280 mm Dsm 0.370 mm typ. (depends on the soldermask registration tolerance) Stencil opening 0.280 mm Stencil thickness Between 0.100 mm and 0.125 mm DocID024738 Rev 5 127/134 130 Package information STM32F401xB STM32F401xC UFBGA100 device marking The following figure gives an example of topside marking orientation versus ball A1 identifier location. Figure 60. UFBGA100 marking example (top view) 3URGXFWLGHQWLILFDWLRQ 670) 9%+ 'DWHFRGH < :: %DOO LQGHQWLILHU 5HYLVLRQFRGH 5 06Y9 1. Parts marked as “ES”, “E” or accompanied by an Engineering Sample notification letter, are not yet qualified and therefore not yet ready to be used in production and any consequences deriving from such usage will not be at ST charge. In no event, ST will be liable for any customer usage of these engineering samples in production. ST Quality has to be contacted prior to any decision to use these Engineering samples to run qualification activity. 128/134 DocID024738 Rev 5 STM32F401xB STM32F401xC 7.6 Package information Thermal characteristics The maximum chip junction temperature (TJmax) must never exceed the values given in Table 14: General operating conditions on page 59. The maximum chip-junction temperature, TJ max., in degrees Celsius, may be calculated using the following equation: TJ max = TA max + (PD max x ΘJA) Where: • TA max is the maximum ambient temperature in °C, • ΘJA is the package junction-to-ambient thermal resistance, in °C/W, • PD max is the sum of PINT max and PI/O max (PD max = PINT max + PI/Omax), • PINT max is the product of IDD and VDD, expressed in Watts. This is the maximum chip internal power. PI/O max represents the maximum power dissipation on output pins where: PI/O max = Σ (VOL × IOL) + Σ((VDD – VOH) × IOH), taking into account the actual VOL / IOL and VOH / IOH of the I/Os at low and high level in the application. Table 86. Package thermal characteristics Symbol ΘJA 7.6.1 Parameter Value Thermal resistance junction-ambient UFQFPN48 32 Thermal resistance junction-ambient WLCSP49 52 Thermal resistance junction-ambient LQFP64 50 Thermal resistance junction-ambient LQFP100 42 Thermal resistance junction-ambient UFBGA100 56 Unit °C/W Reference document JESD51-2 Integrated Circuits Thermal Test Method Environment Conditions - Natural Convection (Still Air). Available from www.jedec.org. DocID024738 Rev 5 129/134 130 Part numbering 8 STM32F401xB STM32F401xC Part numbering Table 87. Ordering information scheme Example: STM32 F 401 C C T 6 xxx Device family STM32 = ARM-based 32-bit microcontroller Product type F = General-purpose Device subfamily 401: 401 family Pin count C = 48/49 pins R = 64 pins V = 100 pins Flash memory size B = 128 Kbytes of Flash memory C = 256 Kbytes of Flash memory Package H = UFBGA T = LQFP U = UFQFPN Y = WLCSP Temperature range 6 = Industrial temperature range, –40 to 85 °C 7 = Industrial temperature range, –40 to 105 °C Packing TR = tape and reel No character = tray or tube 130/134 DocID024738 Rev 5 Revision history 9 STM32F401xB STM32F401xC Revision history Table 88. Document revision history 131/134 Date Revision Changes 23-Jul-2013 1 Initial release. 06-Sep-2013 2 Updated product status to production data Added I2C 1 MBit/s in Features Updated Figure 1: Compatible board design for LQFP100 package Added notes and revised the main function after reset columnn Table 8: STM32F401xB/STM32F401xC pin definitions. Replaced ‘I2S2_CKIN’ signal name with ‘I2S_CKIN’ and added EVENTOUT alternate function in Table 8: STM32F401xB/STM32F401xC pin definitions and Table 9: Alternate function mapping Updated Section 3.28: Analog-to-digital converter (ADC) Updated the reference of VESD(CDM) in Table 51: ESD absolute maximum ratings Updated Section 3.20: Inter-integrated circuit interface (I2C), including Table 5: Comparison of I2C analog and digital filters Removed first sentence (“Unless otherwise specified...”) in I2C interface characteristics Changed the order of the tables in Section 6.3.6: Supply current characteristics Modified the “SDA and SCL rise time” fast mode I2C minimum value in Table 59: I2C characteristics Updated Figure 33: I2C bus AC waveforms and measurement circuit and Table 60: SCL frequency (fPCLK1= 42 MHz, VDD = VDD_I2C = 3.3 V) Replaced “Marking of engineering samples” sections with “Marking of samples” sections, and added UFBGA100 device marking section for package UFGBA100 in Section 7: Package information 08-Nov-2013 3 Updated UFBGA100 in Table 86: Package thermal characteristics. Changed WLCSP49 package measurements to 3 x 3 mm in Section 7.1. DocID024738 Rev 5 STM32F401xB STM32F401xC Revision history Table 88. Document revision history (continued) Date 16-May-2014 Revision Changes 4 Change VDD/VDDA minimum value to 1.7 V. Changed number of EXTI lines in Section 3.10: External interrupt/event controller (EXTI). Updated Figure 18: Power supply scheme. Updated Table 11: Voltage characteristics, Table 12: Current characteristics andTable 14: General operating conditions. Added note 4. in Table 26: Typical and maximum current consumption in Sleep mode. Updated typical values at TA = 25 °C in Table 27: Typical and maximum current consumptions in Stop mode VDD=1.8 V. Updated SDIO current consumption in Table 33: Peripheral current consumption. Updated Table 54: I/O static characteristics, Table 56: I/O AC characteristics and added Figure 30: FT I/O input characteristics. Updated Table 55: Output voltage characteristics. Updated Table 53: I/O current injection susceptibility and Table 57: NRST pin characteristics. Updated Table 61: SPI dynamic characteristics. Updated package dimensions in Section 7.1 title. Added note below engineering sample marking schematics. Updated UFBGA100 Thermal resistance in Table 86: Package thermal characteristics. DocID024738 Rev 5 132/134 133 Revision history STM32F401xB STM32F401xC Table 88. Document revision history (continued) Date 06-Aug-2015 133/134 Revision Changes 5 Changed current consumption to 128 µA/MHz on cover page. Updated Table 3: Regulator ON/OFF and internal power supply supervisor availability for UFQFPN48. Updated Figure 10: STM32F401xB/STM32F401xC WLCSP49 pinout to show top view instead of bump view. Renamed VCAP1/2 into VCAP_1/_2 in Figure 10: STM32F401xB/STM32F401xC WLCSP49 pinout, Figure 11: STM32F401xB/STM32F401xC UFQFPN48 pinout, Figure 13: STM32F401xB/STM32F401xC LQFP100 pinout and Figure 14: STM32F401xB/STM32F401xC UFBGA100 pinout. In whole Section 6: Electrical characteristics, modified notes related to characteristics guaranteed by design and by tests during characterization. Updated PLS[2:0]=101 (falling edge) in Table 19: Embedded reset and power control block characteristics. Updated Table 39: HSI oscillator characteristics. Updated VHYS in Table 56: I/O AC characteristics. Added tSP in Table 59: I2C characteristics. Removed note 1 in Table 67: ADC accuracy at fADC = 18 MHz, Table 68: ADC accuracy at fADC = 30 MHz and Table 69: ADC accuracy at fADC = 36 MHz. Added WLCSP49 Figure 47: WLCSP49 0.4 mm pitch wafer level chip scale recommended footprint and Table 80: WLCSP49 recommended PCB design rules (0.4 mm pitch). Added Section : WLCSP49 device marking. Updated Section : UFQFPN48 device marking. Updated Table 82: LQFP64 - 64-pin, 10 x 10 mm, 64-pin low-profile quad flat package mechanical data and Section : LQFP64 device marking. Updated Section : LQFP64 device marking and Section : LQFP100 device marking Updated Table 84: UFBGA100 - 100-ball, 7 x 7 mm, 0.50 mm pitch, ultra fine pitch ball grid array package mechanical data, Figure 59: UFGBA100 recommended footprint. Added Table 85: UFBGA100 recommended PCB design rules (0.5 mm pitch BGA). updated Section : UFBGA100 device marking. Added Temperature range 7 in Table 87: Ordering information scheme. DocID024738 Rev 5 STM32F401xB STM32F401xC IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2015 STMicroelectronics – All rights reserved DocID024738 Rev 5 134/134 134