ST STM32F103T80 USB、UART转换器参考设计方案

ST公司的STM32F103T8是一款STM32F103xx系列中密度性能的产品线，包含高性能ARM Cortex-M3 32位内核，最高主频为72MHz，内嵌高速存储器（Flash为128K，SRAM为20K），提供2个12位ADC，3个16位定时器和一个PWM定时器。接口主要有2个IIC、2个SPI、3个UART，1个USB和1个CAN总线。本文首先介绍芯片的简介、特性、内部框图及应用领域，并给出相应设计方案的设计原理图、元器件列表及制板图。

The STM32F103xx medium-density performance line family incorporates the highperformance ARM Cortex™-M3 32-bit RISC core operating at a 72 MHz frequency, highspeed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 20 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer two 12-bit ADCs, three general purpose 16-bit timers plus one PWM timer, as well as standard and advanced communication interfaces: up to two I2Cs and SPIs, three USARTs, an USB and a CAN.

The devices operate from a 2.0 to 3.6 V power supply. They are available in both the –40 to +85 °C temperature range and the –40 to +105 °C extended temperature range. A comprehensive set of power-saving mode allows the design of low-power applications.
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