The STM32F091xB/xC microcontrollers incorporate the high-performance ARM Cortex -M0 32-bit RISC core operating at a 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 general-purpose 16-bit timers, a 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. The description below provides an overview of the complete range of STM32F091xB/xC peripherals proposed.These features make the STM32F091xB/xC microcontrollers suitable for a wide range of applications such as application control and user interfaces, handheld 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.
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
CAN interface
HDMI CEC wakeup on header reception
Serial wire debug (SWD)
96-bit unique ID
All packages ECOPACK® 2
