STM32F1系列属于中低端的32位ARM微控制器，该系列芯片是意法半导体（ST）公司出品，其内核是Cortex-M3。 该系列芯片按片内Flash的大小可分为三大类：小容量（16K和32K）、中容量（64K和128K）、大容量（256K、384K和512K）。 芯片集成定时器，CAN，ADC，SPI，I2C，USB，UART，等多种功能。(The STM series belongs to the 32 - bit arm microcontroller of the middle and low end, which is produced by stmicroelectronics ( st ) company and its core is cortex - m3. The series chips can be divided into three categories according to the size of flash: small capacity ( 16k and 32k ), medium capacity ( 64k and 128 ), large capacity ( 256, 384, and 512k ). Chip integrated timer, can, ADC, SPI, I2C, USB, UART, and other functions.)