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diff --git a/bsp/at32/at32f415-start/README.md b/bsp/at32/at32f415-start/README.md
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+++ b/bsp/at32/at32f415-start/README.md
@@ -50,6 +50,7 @@ AT32F415-START板级包支持MDK4﹑MDK5﹑IAR开发环境和GCC编译器,以�
| WDT | 支持 | |
| RTC | 支持 | |
| FLASH | 支持 | |
+| USB | 支持 | |
### IO在板级支持包中的映射情况
@@ -92,6 +93,8 @@ AT32F415-START板级包支持MDK4﹑MDK5﹑IAR开发环境和GCC编译器,以�
| PC5 | ADC1_IN15 |
| PB8 | CAN1_RX |
| PB9 | CAN1_TX |
+| PA11 | USB_DM |
+| PA12 | USB_DP |
## 使用说明