In addition to the new enhanced peripheral interface, the STM32 Interconnect family also offers the same standard interface as other STM32 microcontrollers, and this shared peripheral enhances application flexibility across the entire product family, allowing developers to reuse the same software in multiple designs. Standard peripherals for the new STM32 include 10 timers, two 12-bit 1-Msample\/s analog-to-digital converters (2-Msample\/s in interleave mode), two 12-bit analog-to-digital converters, two I2C interfaces, five USART interfaces, and three SPI ports. The new peripheral has a total of 12 DMA channels and a CRC cell that, like other STM32 microcontrollers, supports 96-bit unique identifiers. New series microcontroller along the low voltage of the STM32 product family and energy-saving advantages. The operating voltage range from 2.0V to 3.6V is compatible with mainstream battery technologies such as lithium batteries and nickel-metal hydride batteries, and the package also features a battery mode dedicated pin Vbat. Executing code from flash at 72MHz consumes only 27mA of current. There are four low-power modes that reduce current consumption to two microamps. Quick boot from low power mode also saves power; The start circuit uses the 8MHz signal generated internally by the STM32 to wake the microcontroller from stop mode in less than 6 microseconds.