STM32F050K4U6A

STM32F050x4 STM32F050x6 Low- and medium-density advanced ARM®-based 32-bit MCU with up to 32 Kbyte Flash, timers, ADC and comm. interfaces Datasheet - not recommended for new design Features • Core: 32-bit ARM® Cortex®-M0 CPU, frequency up to 48 MHz • Memories – 16 to 32 Kbyte of Flash memory – 4 Kbyte of SRAM with HW parity checking • CRC calculation unit • Reset and supply management – Voltage range: 2.0 V to 3.6 V – Power-on/Power-down reset (POR/PDR) – Programmable voltage detector (PVD) – Low power modes: Sleep, Stop and Standby – VBAT supply for RTC and backup registers • Clock management – 4 to 32 MHz crystal oscillator – 32 kHz oscillator for RTC with calibration – Internal 8 MHz RC with x6 PLL option – Internal 40 kHz RC oscillator • Up to 39 fast I/Os – All mappable on external interrupt vectors – Up to 25 I/Os with 5 V tolerant capability LQFP48 7 x 7 mm UFQFPN32 5 x 5 mm UFQFPN28 4 x 4 mm TSSOP20 6.5 x 6.4 mm – 1 x 16-bit timer with 1 IC/OC – Independent and system watchdog timers – SysTick timer: 24-bit downcounter • Calendar RTC with alarm and periodic wakeup from Stop/Standby • Communication interfaces – 1 x I2C interface; supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, and wakeup from STOP – 1 x USART supporting master synchronous SPI and modem control; one with ISO7816 interface, LIN, IrDA capability auto baud rate detection and wakeup feature – 1 x SPI (18 Mbit/s) with 4 to 16 programmable bit frames, with I2S interface multiplexed • Serial wire debug (SWD) • 5-channel DMA controller • 96-bit unique ID • 1 × 12-bit, 1.0 µs ADC (up to 10 channels) – Conversion range: 0 to 3.6V – Separate analog supply from 2.4 up to 3.6 V • Extended temperature range: -40 to +105°C • Up to 9 timers – 1 x 16-bit 7-channel advanced-control timer for 6 channels PWM output, with deadtime generation and emergency stop – 1 x 32-bit and 1 x 16-bit timer, with up to 4 IC/OC, usable for IR control decoding – 1 x 16-bit timer, with 2 IC/OC, 1 OCN, deadtime generation and emergency stop – 1 x 16-bit timer, with IC/OC and OCN, deadtime generation, emergency stop and modulator gate for IR control April 2015 Table 1. Device summary Reference Part number STM32F050x4 STM32F050C4, STM32F050F4, STM32F050G4, STM32F050K4 STM32F050x6 STM32F050C6, STM32F050F6, STM32F050G6, STM32F050K6 DocID023683 Rev 2 This is information on a product still in production but not recommended for new designs. 1/101 www.st.com Contents STM32F050x4 STM32F050x6 Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.1 ARM® Cortex®-M0 core with embedded Flash and SRAM . . . . . . . . . . . 12 3.2 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.3 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.4 Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 13 3.5 Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.5.2 Power supply supervisors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3.5.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.5.4 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.6 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.7 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.8 Direct memory access controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.9 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.10 3.11 2/101 3.5.1 3.9.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 16 3.9.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 16 Analog to digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.10.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.10.2 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.11.1 Advanced-control timer (TIM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 3.11.2 General-purpose timers (TIM2..3, TIM14..17) . . . . . . . . . . . . . . . . . . . . 18 3.11.3 Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.11.4 System window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 3.11.5 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.12 Real-time clock (RTC) and backup registers . . . . . . . . . . . . . . . . . . . . . . 20 3.13 Inter-integrated circuit interface (I2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.14 Universal synchronous/asynchronous receiver transmitter (USART) . . . 21 3.15 Serial peripheral interface (SPI)/Inter-integrated sound interfaces (I2S) . 22 DocID023683 Rev 2 STM32F050x4 STM32F050x6 3.16 Contents Serial wire debug port (SW-DP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4 Pinouts and pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5 Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 6.1.6 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 6.1.7 Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 6.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 6.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 6.3.1 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 6.3.2 Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . 40 6.3.3 Embedded reset and power control block characteristics . . . . . . . . . . . 40 6.3.4 Embedded reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 6.3.5 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 6.3.6 External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 6.3.7 Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 6.3.8 PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 6.3.9 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.3.10 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 6.3.11 Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 6.3.12 I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 6.3.13 I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 6.3.14 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 6.3.15 12-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 6.3.16 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 6.3.17 VBAT monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 6.3.18 Timer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 6.3.19 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 DocID023683 Rev 2 3/101 4 Contents 7 STM32F050x4 STM32F050x6 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 7.1 LQFP48 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84 7.2 UFQFPN32 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 7.3 UFQFPN28 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 7.4 TSSOP20 package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 7.5 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 7.5.1 Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 7.5.2 Selecting the product temperature range . . . . . . . . . . . . . . . . . . . . . . . 97 8 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 4/101 DocID023683 Rev 2 STM32F050x4 STM32F050x6 List of tables 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. Table 43. Table 44. Table 45. Table 46. Table 47. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 STM32F050x4/6 device features and peripheral counts . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Comparison of I2C analog and digital filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Alternate functions selected through GPIOA_AFR registers for port A . . . . . . . . . . . . . . . 30 Alternate functions selected through GPIOB_AFR registers for port B . . . . . . . . . . . . . . . 31 STM32F050x4/6 peripheral register boundary addresses . . . . . . . . . . . . . . . . . . . . . . . . . 33 Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 40 Programmable voltage detector characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Typical and maximum current consumption from VDD supply at VDD = 3.6 . . . . . . . . . . . 43 Typical and maximum current consumption from the VDDA supply . . . . . . . . . . . . . . . . . . 44 Typical and maximum VDD consumption in Stop and Standby modes. . . . . . . . . . . . . . . . 45 Typical and maximum VDDA consumption in Stop and Standby modes. . . . . . . . . . . . . . . 45 Typical and maximum current consumption from VBAT supply. . . . . . . . . . . . . . . . . . . . . . 46 Typical current consumption in Run mode, code with data processing running from Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Typical current consumption in Sleep mode, code running from Flash or RAM . . . . . . . . . 48 Switching output I/O current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54 LSE oscillator characteristics (fLSE = 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 HSI14 oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Flash memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 Flash memory endurance and data retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61 EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 EMI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 I/O current injection susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 I/O static characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Output voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 I/O AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 DocID023683 Rev 2 5/101 6 List of tables 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. 6/101 STM32F050x4 STM32F050x6 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 RAIN max for fADC = 14 MHz . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 ADC accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 TS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 VBAT monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 TIMx characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 IWDG min/max timeout period at 40 kHz (LSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 WWDG min-max timeout value @48 MHz (PCLK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 I2C characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78 I2C analog filter characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 SPI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 I2S characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85 UFQFPN32 - 32-pin, 5x5 mm, 0.5 mm pitch ultra thin fine pitch quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 UFQFPN28 - 28-lead, 7x7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 TSSOP20 – 20-lead thin shrink small outline, 6.5 x 4.4 mm, 0.65 mm pitch, package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 Package thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Ordering information scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 DocID023683 Rev 2 STM32F050x4 STM32F050x6 List of figures 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. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Clock tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 LQFP48 48-pin package pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 UFQFPN32 32-pin package pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 UFQFPN28 28-pin package pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 TSSOP20 20-pin package pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 STM32F050x4/6 memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Pin loading conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52 Low-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 Typical application with an 8 MHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 Typical application with a 32.768 kHz crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 HSI oscillator accuracy characterization results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57 HSI14 oscillator accuracy characterization results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 TC and TTa I/O input characteristics - CMOS port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 TC and TTa I/O input characteristics - TTL port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Five volt tolerant (FT and FTf) I/O input characteristics - CMOS port. . . . . . . . . . . . . . . . . 68 Five volt tolerant (FT and FTf) I/O input characteristics - TTL port . . . . . . . . . . . . . . . . . . . 68 I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 ADC accuracy characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 I2C bus AC waveforms and measurement circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 SPI timing diagram - slave mode and CPHA = 1(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 SPI timing diagram - master mode(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81 I2S slave timing diagram (Philips protocol). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 I2S master timing diagram (Philips protocol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83 LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat package outline . . . . . . . . . . . . . . . . . . . 84 LQFP48 - 48-pin, 7 x 7 mm low-profile quad flat package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86 LQFP48 marking example (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 UFQFPN32 - 32-pin, 5x5 mm, 0.5 mm pitch ultra thin fine pitch quad flat package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88 UFQFPN32 - 32-pin, 5x5 mm, 0.5 mm pitch ultra thin fine pitch quad flat package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 UFQFPN32 marking example (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 UFQFPN28 - 28-lead, 7x7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91 UFQFPN28 - 28-lead, 7x7 mm, 0.5 mm pitch, ultra thin fine pitch quad flat package recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 UFQFPN28 marking example (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 TSSOP20 – 20-lead thin shrink small outline, 6.5 x 4.4 mm, 0.65 mm pitch, package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94 TSSOP20 – 20-lead thin shrink small outline, 6.5 x 4.4 mm, 0.65 mm pitch, DocID023683 Rev 2 7/101 8 List of figures Figure 43. 8/101 STM32F050x4 STM32F050x6 package footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 TSSOP20 marking example (package top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 DocID023683 Rev 2 STM32F050x4 STM32F050x6 1 Introduction Introduction This datasheet provides the ordering information and mechanical device characteristics of the STM32F050x4/6 microcontrollers. This datasheet should be read in conjunction with STM32F0 series reference manual (RM0091). The reference manual is available from STMicroelectronics website www.st.com. For information on the ARM® Cortex®-M0 core, please refer to the Cortex®-M0 Technical Reference Manual, available from ARM website www.arm.com. DocID023683 Rev 2 9/101 11 Description 2 STM32F050x4 STM32F050x6 Description The STM32F050x4/6 family incorporates the high-performance ARM® Cortex®-M0 32-bit RISC core operating at a 48 MHz maximum frequency, high-speed embedded memories (Flash memory up to 32 Kbyte and SRAM up to 4 Kbyte), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (one I2C, one SPI, one I2S, and one USART), one 12-bit ADC, up to five general-purpose 16-bit timers, a 32-bit timer and an advanced-control PWM timer. The STM32F050x4/6 family operates in the -40 to +85 °C and -40 to +105 °C temperature ranges, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications. The STM32F050x4/6 family includes devices in four different packages ranging from 20 to 48 pins. Depending on the device chosen, different sets of peripherals are included. An overview of the complete range of peripherals proposed in this family is provided. These features make the STM32F050x4/6 microcontroller family suitable for a wide range of applications such as control application and user interfaces, hand-held equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs. Table 2. STM32F050x4/6 device features and peripheral counts Peripheral Flash (Kbyte) STM32F050Fx 16 SRAM (Kbyte) 32 4 STM32F050Gx 16 32 1 (16-bit) General purpose 4 (16-bit) 1 (32-bit) SPI (I2S)(1) 1 I2C 1 USART 1 GPIOs 1 (9 ext. + 3 int.) 15 16 32 4 23 27 39 48 MHz Operating voltage 2.0 to 3.6 V Ambient operating temperature: -40 °C to 85 °C / -40 °C to 105 °C Junction temperature: -40°C to 105°C / -40 °C to 125 °C TSSOP20 UFQFPN28 1. The SPI interface can be used either in SPI mode or in I2S audio mode. 10/101 STM32F050Cx 1 (10 ext. + 3 int.) Max. CPU frequency Operating temperature 32 4 Advanced control 12-bit synchronized ADC (number of channels) Packages 16 4 Timers Comm. interfaces STM32F050Kx DocID023683 Rev 2 UFQFPN32 LQFP48 STM32F050x4 STM32F050x6 Description Figure 1. Block diagram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 57& LQWHUIDFH 7,0(5  FKDQQHOV  FRPSO FKDQQHOV %5. (75 LQSXW DV $) 7,0(5  FK (75 DV $) 7,0(5  FK (75 DV $) 7,0(5  FKDQQHO DV $) 7,0(5  FKDQQHO  FRPSO %5. DV $) 7,0(5  FKDQQHO  FRPSO %5. DV $) $+% $3%  $) 026,6' 0,620&. 6&.&. 166:6DV$) (;7,7 :.83 ,5B287DV$) ::'* 63,,6 '%*0&8 6 VDDA Electrostatic discharge voltage (human body model) see Section 6.3.11: Electrical sensitivity characteristics 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 must always be respected. Refer to Table 13: Current characteristics for the maximum allowed injected current values. DocID023683 Rev 2 37/101 83 Electrical characteristics STM32F050x4 STM32F050x6 Table 13. Current characteristics Symbol Ratings Max. IVDD(Σ) Total current into sum of all VDD_x and VDDSDx power lines (source)(1) 120 IVSS(Σ) Total current out of sum of all VSS_x and VSSSD ground lines (sink)(1) -120 IVDD(PIN) IVSS(PIN) Maximum current into each VDD_x or VDDSDx power pin (source)(1) (1) Maximum current out of each VSS_x or VSSSD ground pin (sink) 100 -100 Output current sunk by any I/O and control pin IIO(PIN) ΣIIO(PIN) IINJ(PIN) - 25 Total output current sunk by sum of all IOs and control pins(2) Total output current sourced by sum of all IOs and control pins(2) pins(3) mA 80 -80 -5/+0 Injected current on TC and RST pin(4) Injected current on TTa pins ΣIINJ(PIN) 25 Output current source by any I/O and control pin Injected current on FT, FTf and B Unit ±5 (5) ±5 Total injected current (sum of all I/O and control pins)(6) ± 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 QFP packages. 3. Positive injection is not possible on these I/Os and does not occur for input voltages lower than the specified maximum value. 4. A positive injection is induced by VIN>VDD while a negative injection is induced by VINVDDA while a negative injection is induced by VIN