STM32F051R8T6 ,Entry-level ARM Cortex-M0 MCU with 64 Kbytes Flash, 48 MHz CPU, motor control and CEC functionsThermal characteristics . . . . 45Table 20. General operating conditions . . . . . . . 46 ..
STM32F100C4T6B ,Mainstream Value line, ARM Cortex-M3 MCU with 16 Kbytes Flash, 24 MHz CPU, motor control and CEC functionsFeatures FBGA■ Core: ARM 32-bit Cortex™-M3 CPU– 24 MHz maximum frequency,LQFP100 14 × 14 mm1.25 DMI ..
STM32F100C6T6B ,Mainstream Value line, ARM Cortex-M3 MCU with 32 Kbytes Flash, 24 MHz CPU, motor control and CEC functionsThermal characteristics . . . . 33Table 8. General operating conditions . . . . . . . 33T ..
STM32F100C6T7B ,Mainstream Value line, ARM Cortex-M3 MCU with 32 Kbytes Flash, 24 MHz CPU, motor control and CEC functionsSTM32F100x4 STM32F100x6STM32F100x8 STM32F100xBLow & medium-density value line, advanced ARM-based 3 ..
STM32F100C8T6B ,Mainstream Value line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 24 MHz CPU, motor control and CEC functionsFeatures FBGA■ Core: ARM 32-bit Cortex™-M3 CPU– 24 MHz maximum frequency,LQFP100 14 × 14 mm1.25 DMI ..
STM32F100CBT6B ,Mainstream Value line, ARM Cortex-M3 MCU with 128 Kbytes Flash, 24 MHz CPU, motor control and CEC functionsElectrical characteristics . . . . 305.1 Parameter conditions 305.1.1 Minimum and maximum ..
SY10EP05VZG , 5V/3.3V DIFFERENTIAL AND/NAND
SY10EP05VZG , 5V/3.3V DIFFERENTIAL AND/NAND
SY10EP05VZITR , 5V/3.3V DIFFERENTIAL AND/NAND
SY10EP11UZG , 2.5V/3.3V/5V 1:2 DIFFERENTIAL PECL/LVPECL/ECL FANOUT BUFFER
SY10EP11UZG , 2.5V/3.3V/5V 1:2 DIFFERENTIAL PECL/LVPECL/ECL FANOUT BUFFER
SY10EP11UZI , 2.5V/3.3V/5V 1:2 DIFFERENTIAL PECL/LVPECL/ECL FANOUT BUFFER
STM32F051C8T6-STM32F051R8T6
Entry-level ARM Cortex-M0 MCU with 16 Kbytes Flash, 48 MHz CPU, motor control and CEC functions
January 2014 DocID022265 Rev 4 1/115
STM32F051xxARM-based 32-bit MCU, 16 to 64-KB Flash, timers, ADC,
DAC and communication interfaces, 2.0-3.6 V
Datasheet production data
Features Core: ARM® 32-bit Cortex™-M0 CPU, frequency up to 48 MHz Memories 16 to 64 Kbytes of Flash memory 8 Kbytes of SRAM with HW parity checking CRC calculation unit Reset and power 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, StandbyBAT 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 55 fast I/Os All mappable on external interrupt vectors Up to 36 I/Os with 5 V tolerant capability 5-channel DMA controller 1 x 12-bit, 1.0 μs ADC (up to 16 channels) Conversion range: 0 to 3.6 V Separate analog supply from 2.4 up to 3.6 One 12-bit D/A converter Two fast low-power analog comparators with
programmable input and output Up to 18 capacitive sensing channels
supporting touchkey, linear and rotary touch sensors Up to 11 timers One 16-bit 7-channel advanced-control
timer for 6 channels PWM output, with deadtime generation and emergency stop One 32-bit and one 16-bit timer, with up to 4 IC/OC, usable for IR control decoding One 16-bit timer, with 2 IC/OC, 1 OCN, deadtime generation and emergency stop Two 16-bit timers, each with IC/OC and OCN, deadtime generation, emergency
stop and modulator gate for IR control One 16-bit timer with 1 IC/OC Independent and system watchdog timers SysTick timer: 24-bit downcounter One 16-bit basic timer to drive the DAC Calendar RTC with alarm and periodic wakeup
from Stop/Standby Communication interfaces Up to 2 I2 C interfaces; one supporting Fast Mode Plus (1 Mbit/s) with 20 mA current
sink, SMBus/PMBus and wakeup from STOP Up to two USARTs supporting master
synchronous SPI and modem control; one with ISO7816 interface, LIN, IrDA
capability, auto baud rate detection and wakeup feature Up to two SPIs (18 Mbit/s) with 4 to 16 programmable bit frame, 1 with I2S
interface multiplexed HDMI CEC interface, wakeup on header
reception Serial wire debug (SWD) 96-bit unique ID All packages ECOPACK®2
Table 1. Device summary
Reference Part numberSTM32F051xx
STM32F051K4, STM32F051C4, STM32F051R4
STM32F051K6, STM32F051C6, STM32F051R6
STM32F051C8, STM32F051R8, STM32F051K8
Contents STM32F051xx2/115 DocID022265 Rev 4
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123.1 ARM® CortexTM-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
3.5.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.5.2 Power supply supervisors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.5.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
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
3.9.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . .16
3.9.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . .16
3.10 Analog to digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.10.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.10.2 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.10.3 VBAT battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
3.11 Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.12 Comparators (COMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.13 Touch sensing controller (TSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.14 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.14.1 Advanced-control timer (TIM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
3.14.2 General-purpose timers (TIM2..3, TIM14..17) . . . . . . . . . . . . . . . . . . . .21
3.14.3 Basic timer TIM6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3.14.4 Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3.14.5 System window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . .22
DocID022265 Rev 4 3/115
STM32F051xx Contents3.14.6 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3.15 Real-time clock (RTC) and backup registers . . . . . . . . . . . . . . . . . . . . . . 22
3.16 Inter-integrated circuit interfaces (I2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.17 Universal synchronous/asynchronous receiver transmitters (USART) . . 24
3.18 Serial peripheral interface (SPI)/Inter-integrated sound interfaces (I2 S) . 25
3.19 High-definition multimedia interface (HDMI) - consumer
electronics control (CEC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.20 Serial wire debug port (SW-DP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Pinouts and pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
6.1.6 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
6.1.7 Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . .44
6.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.1 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
6.3.2 Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . .47
6.3.3 Embedded reset and power control block characteristics . . . . . . . . . . .47
6.3.4 Embedded reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
6.3.5 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
6.3.6 Wakeup time from low-power mode . . . . . . . . . . . . . . . . . . . . . . . . . . .60
6.3.7 External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .61
6.3.8 Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . .67
6.3.9 PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
6.3.10 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
6.3.11 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
6.3.12 Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
6.3.13 I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Contents STM32F051xx4/115 DocID022265 Rev 4
6.3.14 I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
6.3.15 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
6.3.16 12-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
6.3.17 DAC electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
6.3.18 Comparator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
6.3.19 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
6.3.20 VBAT monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86
6.3.21 Timer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87
6.3.22 Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 957.1 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
7.2 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
7.2.1 Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
7.2.2 Selecting the product temperature range . . . . . . . . . . . . . . . . . . . . . . 108
Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
DocID022265 Rev 4 5/115
STM32F051xx List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Table 2. STM32F051xx family device features and peripheral counts . . . . . . . . . . . . . . . . . . . . . . .10
Table 3. Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Table 4. Internal voltage reference calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Table 5. Capacitive sensing GPIOs available on STM32F051xx devices . . . . . . . . . . . . . . . . . . . .19
Table 6. No. of capacitive sensing channels available on STM32F051xx devices. . . . . . . . . . . . . .19
Table 7. Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Table 8. Comparison of I2C analog and digital filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Table 9. STM32F051xx I2 C implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 10. STM32F051xx USART implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Table 11. STM32F051xx SPI/I2S implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Table 12. Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Table 13. Pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Table 14. Alternate functions selected through GPIOA_AFR registers for port A . . . . . . . . . . . . . . .37
Table 15. Alternate functions selected through GPIOB_AFR registers for port B . . . . . . . . . . . . . . .38
Table 16. STM32F051xx peripheral register boundary addresses. . . . . . . . . . . . . . . . . . . . . . . . . . .40
Table 17. Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Table 18. Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Table 19. Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Table 20. General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Table 21. Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Table 22. Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . .47
Table 23. Programmable voltage detector characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Table 24. Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
Table 25. Typical and maximum current consumption from the VDD supply at VDD = 3.6 . . . . . . . . .50
Table 26. Typical and maximum current consumption from the VDDA supply . . . . . . . . . . . . . . . . . .51
Table 27. Typical and maximum current consumption in Stop and Standby modes . . . . . . . . . . . . .52
Table 28. Typical and maximum current consumption from the VBAT supply. . . . . . . . . . . . . . . . . . .53
Table 29. Typical current consumption in Run mode, code with data processing
running from Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
Table 30. Typical current consumption in Sleep mode, code running from Flash or RAM . . . . . . . . .55
Table 31. Switching output I/O current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Table 32. Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Table 33. Low-power mode wakeup timings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
Table 34. High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Table 35. Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Table 36. HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
Table 37. LSE oscillator characteristics (fLSE = 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Table 38. HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Table 39. HSI14 oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Table 40. LSI oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Table 41. PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Table 42. Flash memory characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Table 43. Flash memory endurance and data retention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Table 44. EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Table 45. EMI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Table 46. ESD absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Table 47. Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
