从SXX32F103移植到AT32F403A
2020.08.11 第 2 页 版本 1.0.6
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目录
AT32F403A 与 SXX32F103 异同 ............................................................................ 6
相同点概述 ............................................................................................................... 6
差异点概述 ............................................................................................................... 6
快速替换 SXX32F103 芯片 ...................................................................................... 8
快速验证兼容性 ........................................................................................................ 8
BSP 工程替换步骤 .................................................................................................... 8
AT32F403A 兼容性解析 ........................................................................................ 10
功能增强 ................................................................................................................. 10
FPU 的 ARM® 32 位的 Cortex®-M4F ........................................................................ 10
安全库区保护 .............................................................................................................. 10
高频 PLL 设定 ............................................................................................................. 10
预分频器扩增 .............................................................................................................. 11
内存容量扩展 .............................................................................................................. 11
加挂 SPI 闪存(SPIM 功能) .......................................................................................... 12
扩增 SDIO2 ................................................................................................................. 12
扩增 I2C3 .................................................................................................................... 13
扩增 SPI4 .................................................................................................................... 13
扩增全双工 I2S ........................................................................................................... 13
扩增 USART 和 UART ................................................................................................ 13
扩增 CAN2 .................................................................................................................. 14
支持 CAN 与 USB 同时使用 ....................................................................................... 14
32 位定时器 ................................................................................................................ 14
SPI1 复用为 I2S1 ........................................................................................................ 14
USBDEV 缓冲区 ........................................................................................................ 14
扩增 48MHz HSI 支持 USB 外设 ................................................................................ 15
HSI 自动时钟校准 ACC .............................................................................................. 15
64PIN 封装支持 XMC ................................................................................................. 15
支持闪存 CRC 校验 .................................................................................................... 15
