The STM32F105xx and STM32F107xx connectivity line family incorporates the high-performance ARM Cortex -M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 256 Kbytes and SRAM 64 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer two 12-bit ADCs, four general-purpose 16-bit timers plus a PWM timer, as well as standard and advanced communication interfaces: up to two I²Cs, three SPIs, two I²Ss, five USARTs, an USB OTG FS and two CANs. Ethernet is available on the STM32F107xx only.The STM32F105xx and STM32F107xx connectivity line family operates in the –40 to +105 °C temperature range, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications.The STM32F105xx and STM32F107xx connectivity line family offers devices in three different package types: from 64 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family.These features make the STM32F105xx and STM32F107xx connectivity line microcontroller family suitable for a wide range of applications such as motor drives and application control, medical and handheld equipment, industrial applications, PLCs, inverters, printers, and scanners, alarm systems, video intercom, HVAC and home audio equipment.Core: ARM® 32-bit Cortex® -M3 CPU72 MHz maximum frequency, 1.25 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state memory accessSingle-cycle multiplication and hardware divisionMemories64 to 256 Kbytes of Flash memory64 Kbytes of general-purpose SRAMClock, reset and supply management2.0 to 3.6 V application supply and I/OsPOR, PDR, and programmable voltage detector (PVD)3-to-25 MHz crystal oscillatorInternal 8 MHz factory-trimmed RCInternal 40 kHz RC with calibration32 kHz oscillator for RTC with calibrationLow powerSleep, Stop and Standby modesVBAT supply for RTC and backup registers2 × 12-bit, 1 µs A/D converters (16 channels)Conversion range: 0 to 3.6 VSample and hold capabilityTemperature sensorup to 2 MSPS in interleaved mode2 × 12-bit D/A convertersDMA: 12-channel DMA