The STM32F091xB/xC microcontrollers incorporate the high-performance ARM?Cortex?-M0 32-bit RISC core operating at up to 48 MHz frequency, high-speed embedded memories (up to 256 Kbytes of Flash memory and 32 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. The device offers standard communication interfaces (two I2Cs, two SPIs/one I2S, one HDMI CEC and up to eight USARTs), one CAN, one 12-bit ADC, one 12-bit DAC with two channels, seven 16-bit timers, one 32-bit timer and an advanced-control PWM timer. The STM32F091xB/xC microcontrollers operate 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 STM32F091xB/xC microcontrollers include devices in seven different packages ranging from 48 pins to 100 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included. These features make the STM32F091xB/xC microcontrollers suitable for a wide range of applications such as application control 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.
All features
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= 2.0 V to 3.6 V
Analog supply: VDDA= VDDto 3.6 V
Power-on/Power down reset (POR/PDR)
Programmable voltage detector (PVD)
Low power modes: Sleep, Stop, Standby
VBATsupply 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, 1.0 μs ADC (up to 16 channels)
Conversion range: 0 to 3.6 V
Separate analog supply: 2.4 V to 3.6 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
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