【正文】 divided into two different series: STM32F103 the Enhanced series and STM32F101 the Basic series. The clock frequency of Enhanced Series is up to 72MHz, the highest performance of similar products。 the clock frequency of Basic Series is 36MHz, and the prices of 16 position products significantly enhance the performance of more than 16 position products, is the best choice users to buy them. The two series are builtin flash from 32K to 128K, is the bination of the maximum capacity of the SRAM and peripheral interfaces. When the clock frequency reaches 72MHz, it executes from Flash and the STM32 power consumption is 36mA, the lowest power consumption in the 32bit market products, the equivalent an impressive a. STMicroelectronics Group STMicroelectronics Group was established in June 1987, is a merger of Italy39。s growing faster than the overall rate of growth of the semiconductor industry. Since 1999, ST has always been one of the world39。s fifth largest semiconductor manufacturer and a world leader in many markets. For example, STMicroelectronics is the world39。s largest industrial semiconductor and settop box chip suppliers and discrete devices, mobile phone camera module and car field of integrated circuits highest in the world. STMicroelectronics has the entire group employs nearly 50,000, with 16 stateoftheart R amp。 pany39。 AsiaPacific headquarters in Singapore。 Greater China headquarters in Shanghai, responsible for business in Hong Kong, mainland China and Taiwan. December 8, 1994 for the first time since the pletion of the public offering of shares, STMicroelectronics has been in New York Stock Exchange (ticker symbol: STM) and Pan Ou Bali Stock Exchange listed, in June 1998, in Milan, Italy, securities Exchange. STMicroelectronics has nearly 900 million shares in the public offering of shares, of which approximately % of the shares are publicly traded on the various stock exchanges. Another % of the stock by STMicroelectronics Holding II BV Limited held its shareholders Finmeccanica and CDP Italian Finmeccanica consortium Areva and France Tele, the French consortium。 Cortex ? M3 microcontroller STM32L series of products are based on the ultralowpower ARM CortexM3 processor core, STMicroelectronics two unique energysaving technologies: 130nm dedicated lowleakage current manufacturing process and optimize energysaving architecture to deliver industryleading energysaving performance. This series belongs to the lineup 32 STMicroelectronics STM32 microcontroller product family, the product family, a total of 180 balance of product, the full range of products share most of the pin, software and peripherals, excellent patibility with developers to the maximum design flexibility. c. ST ultralowpower ARM 174。 new products follow the Enhanced Series 72MHz processing frequency. Memory 64KB to 256KB Flash and 20KB to 64KB embedded SRAM. The LQFP64, LQFP100, and LFBGA100 three package in the new series, a different package to maintain the pin out consistency, bined with the STM32 platform design philosophy, and developers by selecting the products can be reoptimization function, memory, performance and pin count, with a minimum of hardware changes to meet individual application needs. Until July 1, 2021, the circulation of models: Basic: STM32F101R6 STM32F101C8 STM32F101R8 STM32F101V8 STM32F101RB STM32F101VB Enhanced: STM32F103C8 STM32F103R8 STM32F103V8 STM32F103RBSTM32F103VB STM32F103VE STM32F103ZE STM32 models Description: STM32F103RBT6 chip model, for example, the positions of the models of seven parts, its naming rules are as follows: (1) STM32: STM32 ARM CortexM3 represents kernel of 32bit microcontrollers. (2) F: F represents the chip subseries. (3) 103:103 representatives Enhanced Series. (4) R: R This is a representative of the number of pins, where T represents 36 feet, 48 feet, C represents, R represents a 64 feet, V represents the 100pin 144pin, Z represents. (5) B: B a representative of embedded Flash capacity, including 6 on behalf of 32K bytes of Flash, 8 on behalf of 64K bytes Flash, 384K bytes Flash B on behalf of 128K bytes Flash, C on behalf of 256K bytes Flash, D representatives E on behalf of 512K bytes Flash. 3 (6) T: T a representative of the package, in which H represents BGA package, T represents LQFP package, U represents VFQFPN package. (7) 6:6 This is a representative of the operating temperature range, where 6 represents 40 85 ℃ , 7 on behalf of 40 105 ℃ . e. STM32F103 performance characteristics Feature 1. The kernel: ARM32bit CortexM3 CPU, the maximum operating frequency of 72MHz,2. Memory: integrated onchip 32512KB of Flash memory and 664KB SRAM memory. 3. Clock reset and power management: .6 V drive voltage of the power supply and I / O interface, POR, PDR and programmable voltage detector (PVD), 416MHz crystal oscillator, embedded 8MHz RC oscillator tuning circuit in the factory, 40 kHz internal RC oscillator circuit. For the CPU clock PLL. With the calibration for the RTC 32kHz crystal. 4. Low power consumption: three kinds of lowpower modes: Sleep, stop, standby mode. Powered the VBAT RTC and backup registers. 5. Debug mode: serial debug (SWD) and JTAG interfaces. 6. DMA: 12channel DMA controller。 VSSA and VDDA must be corresponding connection to VSS and VDD. VBA