M4 32b MCU+FPU, up to 256KB Flash+ 48KB SRAM, 4 ADCs, 2 - Keil

138 Pages·2014·1.73 MB·English

STM32F303xB STM32F303xC
® ®
ARM -based Cortex -M4 32b MCU+FPU, up to 256KB Flash+
48KB SRAM, 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V
Datasheet - production data
Features
• Core: ARM® Cortex®-M4 32-bit CPU with FPU LQFP48 (7 × 7 mm)
LQFP64 (10 × 10 mm)
(72 MHz max), single-cycle multiplication and LQFP100 (14 × 14 mm)
HW division, 90 DMIPS (from CCM)
/1.25DMIPS/MHz (Dhrystone 2.1) • Up to 24capacitive sensing channels supporting
performance at 0 wait state memory access, touchkey, linear and rotary touch sensors
DSP instruction and MPU (memory protection • Up to 13 timers
unit) – One 32-bit timer and two 16-bit timers with
• Operating conditions: up to 4 IC/OC/PWM or pulse counter and
– V , V voltage range: 2.0 V to 3.6 V quadrature (incremental) encoder input
DD DDA
• Memories – Two 16-bit 6-channel advanced-control
– 128 to 256Kbytes of Flash memory timers, with up to 6 PWM channels,
– Up to 40Kbytes of SRAM, with HW parity deadtime generation and emergency stop
check implemented on the first 16 Kbytes. – One 16-bit timer with 2 IC/OCs, 1
– Routine booster: 8 Kbytes of SRAM on OCN/PWM, deadtime generation and
instruction and data bus, with HW parity emergency stop
check (CCM) – Two 16-bit timers with IC/OC/OCN/PWM,
• CRC calculation unit deadtime generation and emergency stop
• Reset and supply management – Two watchdog timers (independent, window)
– Power-on/Power-down reset (POR/PDR) – SysTick timer: 24-bit downcounter
– Programmable voltage detector (PVD) – Two 16-bit basic timers to drive the DAC
– Low power modes: Sleep, Stop and Standby • Calendar RTC with Alarm, periodic wakeup
– V supply for RTC and backup registers from Stop/Standby
BAT
• Clock management • Communication interfaces
– 4 to 32MHz crystal oscillator – CAN interface (2.0B Active)
– 32kHz oscillator for RTC with calibration – Two I2C Fast mode plus (1 Mbit/s) with
– Internal 8MHz RC with x 16 PLL option 20mA current sink, SMBus/PMBus, wakeup
– Internal 40kHz oscillator from STOP
• Up to 87 fast I/Os – Up to five USART/UARTs (ISO 7816
– All mappable on external interrupt vectors interface, LIN, IrDA, modem control)
– Several 5V-tolerant – Up to three SPIs, two with multiplexed
• 12-channel DMA controller half/full duplex I2S interface, 4 to 16
• Four ADCs 0.20µS (up to 39 channels) with programmable bit frames
selectable resolution of 12/10/8/6 bits, 0 to – USB 2.0 full speed interface
3.6V conversion range, single – Infrared transmitter
ended/differential input, separate analog supply • Serial wire debug, Cortex®-M4 with FPU ETM,
from 2 to 3.6V JTAG
• Two 12-bit DAC channels with analog supply • 96-bit unique ID
from 2.4 to 3.6 V
• Seven fast rail-to-rail analog comparators with Table 1. Device summary
analog supply from 2 to 3.6 V Reference Part number
• Four operational amplifiers that can be used in
STM32F303xB STM32F303CB, STM32F303CC, STM32F303RB,
PGA mode, all terminals accessible with analog STM32F303xC STM32F303RC, STM32F303VB, STM32F303VC
supply from 2.4 to 3.6 V
April 2014 DocID023353 Rev 8 1/138
This is information on a product in full production. www.st.com
Contents STM32F303xB STM32F303xC
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 ARM® Cortex®-M4 core with FPU with embedded Flash and SRAM . . . 12
3.2 Memory protection unit (MPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Cyclic redundancy check (CRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7 Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.2 Power supply supervision . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.4 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.8 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.9 General-purpose input/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.10 Direct memory access (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.11 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.11.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 18
3.12 Fast analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.12.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.12.2 Internal voltage reference (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
REFINT
3.12.3 V battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
BAT
3.12.4 OPAMP reference voltage (VREFOPAMP) . . . . . . . . . . . . . . . . . . . . . . 20
3.13 Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.14 Operational amplifier (OPAMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.15 Fast comparators (COMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.16 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.16.1 Advanced timers (TIM1, TIM8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.16.2 General-purpose timers (TIM2, TIM3, TIM4, TIM15, TIM16, TIM17) . . 22
3.16.3 Basic timers (TIM6, TIM7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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STM32F303xB STM32F303xC Contents
3.16.4 Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.16.5 Window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.16.6 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.17 Real-time clock (RTC) and backup registers . . . . . . . . . . . . . . . . . . . . . . 23
3.18 Inter-integrated circuit interface (I2C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.19 Universal synchronous/asynchronous receiver transmitter (USART) . . . 25
3.20 Universal asynchronous receiver transmitter (UART) . . . . . . . . . . . . . . . 25
3.21 Serial peripheral interface (SPI)/Inter-integrated sound interfaces (I2S) . 26
3.22 Controller area network (CAN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.23 Universal serial bus (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.24 Infrared Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.25 Touch sensing controller (TSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.26 Development support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.26.1 Serial wire JTAG debug port (SWJ-DP) . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.26.2 Embedded trace macrocell™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4 Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5 Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1 Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.1 Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.2 Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.3 Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.4 Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.5 Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
6.1.6 Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
6.1.7 Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6.2 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.3 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.3.1 General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
6.3.2 Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . 58
6.3.3 Embedded reset and power control block characteristics . . . . . . . . . . . 58
6.3.4 Embedded reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.3.5 Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
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Contents STM32F303xB STM32F303xC
6.3.6 Wakeup time from low-power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
6.3.7 External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
6.3.8 Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
6.3.9 PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
6.3.10 Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
6.3.11 EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
6.3.12 Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
6.3.13 I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
6.3.14 I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
6.3.15 NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
6.3.16 Timer characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
6.3.17 Communications interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
6.3.18 ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
6.3.19 DAC electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
6.3.20 Comparator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
6.3.21 Operational amplifier characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . 119
6.3.22 Temperature sensor characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
6.3.23 V monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
BAT
7 Package characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
7.1 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
7.2 Thermal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
7.2.1 Reference document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
7.2.2 Selecting the product temperature range . . . . . . . . . . . . . . . . . . . . . . 131
8 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
4/138 DocID023353 Rev 8
STM32F303xB STM32F303xC List of tables
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. STM32F303xB/STM32F303xC family device features and peripheral counts. . . . . . . . . . 10
Table 3. Timer feature comparison. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Table 4. Comparison of I2C analog and digital filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 5. STM32F303xB/STM32F303xC I2C implementation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 6. USART features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 7. STM32F303xB/STM32F303xC SPI/I2S implementation . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Table 8. Capacitive sensing GPIOs available on STM32F303xB/STM32F303xC devices . . . . . . . 28
Table 9. No. of capacitive sensing channels available on STM32F303xB/STM32F303xC devices. 28
Table 10. Legend/abbreviations used in the pinout table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Table 11. STM32F303xB/STM32F303xC pin definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Table 12. Alternate functions for port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Table 13. Alternate functions for port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 14. Alternate functions for port C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Table 15. Alternate functions for port D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Table 16. Alternate functions for port E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Table 17. Alternate functions for port F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 18. STM32F303xB/STM32F303xC memory map, peripheral register boundary addresses . . 50
Table 19. Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 20. Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 21. Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 22. General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Table 23. Operating conditions at power-up / power-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Table 24. Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 58
Table 25. Programmable voltage detector characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Table 26. Embedded internal reference voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 27. Internal reference voltage calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Table 28. Typical and maximum current consumption from V supply at V = 3.6V. . . . . . . . . . . 61
DD DD
Table 29. Typical and maximum current consumption from the V supply . . . . . . . . . . . . . . . . . . 62
DDA
Table 30. Typical and maximum V consumption in Stop and Standby modes. . . . . . . . . . . . . . . . 63
DD
Table 31. Typical and maximum V consumption in Stop and Standby modes. . . . . . . . . . . . . . . 63
DDA
Table 32. Typical and maximum current consumption from V supply. . . . . . . . . . . . . . . . . . . . . . 64
BAT
Table 33. Typical current consumption in Run mode, code with data processing running from Flash65
Table 34. Typical current consumption in Sleep mode, code running from Flash or RAM. . . . . . . . . 66
Table 35. Switching output I/O current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Table 36. Peripheral current consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Table 37. Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Table 38. High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Table 39. Low-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Table 40. HSE oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Table 41. LSE oscillator characteristics (f = 32.768 kHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
LSE
Table 42. HSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Table 43. LSI oscillator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Table 44. PLL characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Table 45. Flash memory characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Table 46. Flash memory endurance and data retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Table 47. EMS characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Table 48. EMI characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
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List of tables STM32F303xB STM32F303xC
Table 49. ESD absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Table 50. Electrical sensitivities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Table 51. I/O current injection susceptibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Table 52. I/O static characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Table 53. Output voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Table 54. I/O AC characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Table 55. NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Table 56. TIMx characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Table 57. IWDG min/max timeout period at 40 kHz (LSI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Table 58. WWDG min-max timeout value @72 MHz (PCLK). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Table 59. I2C timings specification (see I2C specification, rev.03, June 2007) . . . . . . . . . . . . . . . . . 93
Table 60. I2C analog filter characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Table 61. SPI characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Table 62. I2S characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Table 63. USB startup time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Table 64. USB DC electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Table 65. USB: Full-speed electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Table 66. ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Table 67. Maximum ADC RAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Table 68. ADC accuracy - limited test conditions, 100-pin packages . . . . . . . . . . . . . . . . . . . . . . . 107
Table 69. ADC accuracy, 100-pin packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Table 70. ADC accuracy - limited test conditions, 64-pin packages. . . . . . . . . . . . . . . . . . . . . . . . . 111
Table 71. ADC accuracy, 64-pin packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Table 72. ADC accuracy at 1MSPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Table 73. DAC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Table 74. Comparator characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Table 75. Operational amplifier characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Table 76. TS characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Table 77. Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Table 78. V monitoring characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
BAT
Table 79. LQPF100 – 14 x 14mm, low-profile quad flat package mechanical data. . . . . . . . . . . . . 124
Table 80. LQFP64 – 10 x 10 mm low-profile quad flat package mechanical data . . . . . . . . . . . . . . 126
Table 81. LQFP48 – 7 x 7 mm, 48-pin low-profile quad flat package mechanical data . . . . . . . . . . 128
Table 82. Package thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Table 83. Ordering information scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Table 84. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
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STM32F303xB STM32F303xC List of figures
List of figures
Figure 1. STM32F303xB/STM32F303xC block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 2. Clock tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 3. Infrared transmitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 4. STM32F303xB/STM32F303xC LQFP48 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 5. STM32F303xB/STM32F303xC LQFP64 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 6. STM32F303xB/STM32F303xC LQFP100 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Figure 7. STM32F303xB/STM32F303xC memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Figure 8. Pin loading conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 9. Pin input voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Figure 10. Power supply scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 11. Current consumption measurement scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 12. Typical V current consumption (LSE and RTC ON/LSEDRV[1:0] = ’00’) . . . . . . . . . . . 64
BAT
Figure 13. High-speed external clock source AC timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Figure 14. Low-speed external clock source AC timing diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Figure 15. Typical application with an 8 MHz crystal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Figure 16. Typical application with a 32.768 kHz crystal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Figure 17. HSI oscillator accuracy characterization results. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Figure 18. TC and TTa I/O input characteristics - CMOS port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 19. TC and TTa I/O input characteristics - TTL port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Figure 20. Five volt tolerant (FT and FTf) I/O input characteristics - CMOS port. . . . . . . . . . . . . . . . . 87
Figure 21. Five volt tolerant (FT and FTf) I/O input characteristics - TTL port. . . . . . . . . . . . . . . . . . . 87
Figure 22. I/O AC characteristics definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Figure 23. Recommended NRST pin protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Figure 24. I2C bus AC waveforms and measurement circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Figure 25. SPI timing diagram - slave mode and CPHA = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Figure 26. SPI timing diagram - slave mode and CPHA = 1(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Figure 27. SPI timing diagram - master mode(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Figure 28. I2S slave timing diagram (Philips protocol)(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Figure 29. I2S master timing diagram (Philips protocol)(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Figure 30. USB timings: definition of data signal rise and fall time . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Figure 31. ADC accuracy characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figure 32. Typical connection diagram using the ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Figure 33. 12-bit buffered /non-buffered DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Figure 34. OPAMP voltage noise versus frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Figure 35. LQFP100 – 14 x 14mm, 100-pin low-profile quad flat package outline. . . . . . . . . . . . . . 124
Figure 36. LQFP100 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Figure 37. LQFP64 – 10 x 10mm, 64 pin low-profile quad flat package outline. . . . . . . . . . . . . . . . 126
Figure 38. LQFP64 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Figure 39. LQFP48 – 7 x 7 mm, 48-pin low-profile quad flat package outline. . . . . . . . . . . . . . . . . . 128
Figure 40. LQFP48 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
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7
Introduction STM32F303xB STM32F303xC
1 Introduction
This datasheet provides the ordering information and mechanical device characteristics of
the STM32F303xB/STM32F303xC microcontrollers.
This STM32F303xB/STM32F303xC datasheet should be read in conjunction with the
RM0316 STM32F303x, STM32F358xC and STM32F328x4/6/8 reference manual. The
reference manual is available from the STMicroelectronics website www.st.com.
For information on the Cortex®-M4 core with FPU, please refer to:
● Cortex®-M4 with FPU Technical Reference Manual, available from ARM website
www.arm.com.
● STM32F3xxx and STM32F4xxx Cortex®-M4 programming manual (PM0214)
available from our website www.st.com.

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STM32F303xB STM32F303xC Description
2 Description
The STM32F303xB/STM32F303xC family is based on the high-performance
ARM®Cortex®-M4 32-bit RISC core with FPU operating at a frequency of up to 72MHz,
and embedding a floating point unit (FPU), a memory protection unit (MPU) and an
embedded trace macrocell (ETM). The family incorporates high-speed embedded
memories (up to 256Kbytes of Flash memory, up to 40Kbytes of SRAM) and an extensive
range of enhanced I/Os and peripherals connected to two APB buses.
The devices offer up to four fast 12-bit ADCs (5Msps), seven comparators, four operational
amplifiers, up to two DAC channels, a low-power RTC, up to five general-purpose 16-bit
timers, one general-purpose 32-bit timer, and two timers dedicated to motor control. They
also feature standard and advanced communication interfaces: up to two I2Cs, up to three
SPIs (two SPIs are with multiplexed full-duplex I2Ss), three USARTs, up to two UARTs, CAN
and USB. To achieve audio class accuracy, the I2S peripherals can be clocked via an
external PLL.
The STM32F303xB/STM32F303xC family operates in the -40 to +85°C and -40 to +105°C
temperature ranges from a 2.0 to 3.6V power supply. A comprehensive set of power-saving
mode allows the design of low-power applications.
The STM32F303xB/STM32F303xC family offers devices in three packages ranging from
48pins to 100pins.
The set of included peripherals changes with the device chosen.
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51
Description STM32F303xB STM32F303xC
Table 2.STM32F303xB/STM32F303xC family device features and peripheral counts
Peripheral STM32F303Cx STM32F303Rx STM32F303Vx
Flash (Kbytes) 128 256 128 256 128 256
SRAM (Kbytes) on data bus 32 40 32 40 32 40
CCM (Core Coupled Memory)
8
RAM (Kbytes)
Advanced
2 (16-bit)
control
Timers 5 (16-bit)
General purpose
1 (32-bit)
Basic 2 (16-bit)
SPI (I2S)(1) 3(2)
I2C 2
USART 3
Communication
interfaces UART 0 2
CAN 1
USB 1
Normal I/Os
20 27 45
(TC, TTa)
GPIOs
5-volt tolerant
17 25 42
I/Os (FT, FTf)
DMA channels 12
Capacitive sensing channels 17 18 24
12-bit ADCs 4
12-bit DAC channels 2
Analog comparator 7
Operational amplifiers 4
CPU frequency 72 MHz
Operating voltage 2.0 to 3.6 V
Ambient operating temperature: - 40 to 85 °C / - 40 to 105 °C
Operating temperature
Junction temperature: - 40 to 125 °C
Packages LQFP48 LQFP64 LQFP100
1. The SPI interfaces can work in an exclusive way in either the SPI mode or the I2S audio mode.
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