ARM®-based 32-bit MCU, up to 256 KB Flash, CAN, 12 timers ...

1 This is information on a product in full production. January 2017 DocID026284 Rev 41/128 STM32F091xB STM32F091xC ARM -based 32-bit MCU, up to 256 KB Flash, CAN, 12 timers , ADC, DAC, and comm. interfaces, - - production dataFeatures Core: ARM 32-bit Cortex -M0 CPU, frequency up to 48 MHz Memories 128 to 256 Kbytes of Flash memory 32 Kbytes of SRAM with HW parity CRC calculation unit Reset and power management Digital & I/Os supply: VDD = V to V Analog supply: VDDA = VDD to V Power-on/Power down reset (POR/PDR) Programmable voltage detector (PVD) Low power modes: Sleep, Stop, 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 Internal 48 MHz oscillator with automatic trimming based on ext. synchronization Up to 88 fast I/Os All mappable on external interrupt vectors Up to 69 I/Os with 5V-tolerant capability and 19 with independent supply VDDIO2 12-channel DMA controller One 12-bit, s ADC (up to 16 channels) Conversion range: 0 to V Separate analog supply.

2 V to V One 12-bit D/A converter (with 2 channels) Two fast low-power analog comparators with programmable input and output Up to 24 capacitive sensing channels for touchkey, linear and rotary touch sensors Calendar RTC with alarm and periodic wakeup from Stop/Standby 12 timers One 16-bit advanced- control timer for 6 channel PWM output One 32-bit and seven 16-bit timers , with up to 4 IC/OC, OCN, usable for IR control decoding or DAC control Independent and system watchdog timers SysTick timer Communication interfaces Two I2C interfaces supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, one supporting SMBus/PMBus and wakeup Up to eight USARTs supporting master synchronous SPI and modem control , three with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, and with I2S interface multiplexed CAN interface HDMI CEC wakeup on header reception Serial wire debug (SWD) 96-bit unique ID All packages ECOPACK 2 Table 1.

3 Device summaryReferencePart numberSTM32F091xBSTM32F091CB, STM32F091RB, STM32F091 VBSTM32F091xCSTM32F091CC, STM32F091RC, STM32F091 VCLQFP100 14x14 mmLQFP64 10x10 mmLQFP48 7x7 mmUFQFPN487x7 mm)%*$UFBGA1007x7 mmUFBGA645x5 mmWLCSP64 STM32F091xC2/128 DocID026284 Rev 4 Contents1 Introduction .. 92 Description .. 103 Functional overview .. -Cortex -M0 core .. modes .. redundancy check calculation unit (CRC) .. management .. supply schemes .. supply supervisors .. regulator .. modes .. and startup .. inputs/outputs (GPIOs) .. memory access controller (DMA) .. and events .. vectored interrupt controller (NVIC) .. interrupt/event controller (EXTI) .. converter (ADC) .. sensor .. voltage reference (VREFINT) .. battery voltage monitoring .. converter (DAC) .. (COMP) .. sensing controller (TSC) .. and watchdogs .. timer (TIM1) .. timers (TIM2, 3, 14, 15, 16, 17) .. timers TIM6 and TIM7 .. watchdog (IWDG).

4 Window watchdog (WWDG) .. 23 DocID026284 Rev 43/128 STM32F091xB timer .. clock (RTC) and backup registers .. circuit interface (I2C) .. synchronous/asynchronous receiver/transmitter (USART) .. peripheral interface (SPI) / Inter-integrated sound interface (I2S) . multimedia interface (HDMI) - consumer electronics control (CEC) .. area network (CAN) .. recovery system (CRS) .. wire debug port (SW-DP) .. 274 Pinouts and pin descriptions .. 285 Memory mapping .. 456 Electrical characteristics .. conditions .. and maximum values .. values .. curves .. capacitor .. input voltage .. supply scheme .. consumption measurement .. maximum ratings .. conditions .. operating conditions .. conditions at power-up / power-down .. reset and power control block characteristics .. reference voltage .. current characteristics .. time from low-power mode .. clock source characteristics .. clock source characteristics.

5 Characteristics .. characteristics .. 75 ContentsSTM32F091xB STM32F091xC4/128 DocID026284 Rev characteristics .. sensitivity characteristics .. current injection characteristics .. port characteristics .. pin characteristics .. ADC characteristics .. electrical specifications .. characteristics .. sensor characteristics .. monitoring characteristics .. characteristics .. interfaces .. 947 Package information .. package information .. package information .. package information .. package information .. package information .. package information .. package information .. characteristics .. document .. the product temperature range .. 1218 Ordering information .. 1249 Revision history .. 125 DocID026284 Rev 45/128 STM32F091xB STM32F091xCList of tables6 List of tablesTable summary .. 1 Table family device features and peripheral counts .. 11 Table sensor calibration values.. 18 Table voltage reference calibration values.

6 19 Table sensing GPIOs available on STM32F091xB/xC devices .. 20 Table of capacitive sensing channels available on STM32F091xB/xC devices .. 21 Table feature comparison .. 21 Table of I2C analog and digital filters .. 24 Table I2C implementation .. 25 Table USART implementation .. 25 Table SPI/I2S implementation .. 26 Table used in the pinout table .. 33 Table pin definitions .. 34 Table functions selected through GPIOA_AFR registers for port A .. 41 Table functions selected through GPIOB_AFR registers for port B .. 42 Table functions selected through GPIOC_AFR registers for port C .. 43 Table functions selected through GPIOD_AFR registers for port D .. 43 Table functions selected through GPIOE_AFR registers for port E .. 44 Table functions selected through GPIOF_AFR registers for port F.. 44 Table peripheral register boundary addresses .. 46 Table characteristics .. 52 Table characteristics .. 53 Table characteristics.. 53 Table operating conditions.

7 54 Table conditions at power-up / power-down .. 55 Table reset and power control block characteristics.. 55 Table voltage detector characteristics .. 55 Table internal reference voltage .. 56 Table and maximum current consumption from VDD supply at VDD = V .. 58 Table and maximum current consumption from the VDDA supply .. 59 Table and maximum consumption in Stop and Standby modes .. 60 Table and maximum current consumption from the VBAT supply.. 61 Table current consumption, code executing from Flash memory, running from HSE 8 MHz crystal .. 62 Table output I/O current consumption .. 64 Table current consumption .. 65 Table mode wakeup timings .. 67 Table external user clock characteristics.. 67 Table external user clock characteristics .. 68 Table oscillator characteristics .. 69 Table oscillator characteristics (fLSE = kHz) .. 70 Table oscillator characteristics.. 72 Table oscillator characteristics.. 73 Table oscillator characteristics.

8 74 Table oscillator characteristics .. 75 Table characteristics .. 75 Table memory characteristics .. 75 List of tablesSTM32F091xB STM32F091xC6/128 DocID026284 Rev 4 Table memory endurance and data retention .. 76 Table characteristics .. 76 Table characteristics .. 77 Table absolute maximum ratings .. 78 Table sensitivities .. 78 Table current injection susceptibility .. 79 Table static characteristics .. 79 Table voltage characteristics .. 82 Table AC characteristics .. 83 Table pin characteristics .. 84 Table characteristics .. 85 Table max for fADC = 14 MHz .. 87 Table accuracy .. 87 Table characteristics .. 89 Table characteristics .. 91 Table characteristics .. 93 Table monitoring characteristics .. 93 Table characteristics .. 93 Table min/max timeout period at 40 kHz (LSI).. 94 Table min/max timeout value at 48 MHz (PCLK).. 94 Table analog filter characteristics .. 95 Table characteristics .. 95 Table characteristics.

9 97 Table package mechanical data .. 100 Table recommended PCB design rules.. 101 Table package mechanical data.. 103 Table package mechanical data .. 106 Table recommended PCB design rules.. 107 Table package mechanical data .. 109 Table recommended PCB design rules .. 110 Table package mechanical data.. 112 Table package mechanical data.. 116 Table package mechanical data .. 119 Table thermal characteristics .. 121 Table information scheme .. 124 Table revision history .. 125 DocID026284 Rev 47/128 STM32F091xB STM32F091xCList of figures8 List of figuresFigure diagram .. 12 Figure tree .. 16 Figure package pinout .. 28 Figure package pinout .. 29 Figure package pinout .. 30 Figure package pinout .. 31 Figure package pinout .. 32 Figure package pinout .. 32 Figure package pinout .. 33 Figure memory map .. 45 Figure loading conditions .. 49 Figure input voltage .. 49 Figure supply scheme.. 50 Figure consumption measurement scheme.

10 51 Figure external clock source AC timing diagram .. 68 Figure external clock source AC timing diagram .. 68 Figure application with an 8 MHz crystal .. 70 Figure application with a kHz crystal .. 71 Figure oscillator accuracy characterization results for soldered parts .. 72 Figure oscillator accuracy characterization results .. 73 Figure oscillator accuracy characterization results .. 74 Figure and TTa I/O input characteristics .. 81 Figure volt tolerant (FT and FTf) I/O input characteristics .. 81 Figure AC characteristics definition .. 84 Figure NRST pin protection .. 85 Figure accuracy characteristics .. 88 Figure connection diagram using the ADC .. 88 Figure timing diagram - slave mode and CPHA = 0 .. 96 Figure timing diagram - slave mode and CPHA = 1 .. 96 Figure timing diagram - master mode .. 97 Figure slave timing diagram (Philips protocol) .. 98 Figure master timing diagram (Philips protocol).. 99 Figure package outline .. 100 Figure footprint for UFBGA100 package.