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[F472] Modify the README.md for system clock frequency.
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JamieTx
R b b666
@@ -14,7 +14,7 @@
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## 开发板介绍
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EV_F472_LQ100 是 XHSC 官方推出的开发板，搭载 HC32F472PETI 芯片，基于 ARM Cortex-M4 内核，最高主频 200 MHz，具有丰富的板载资源，可以充分发挥 HC32F472PETI 的芯片性能。
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EV_F472_LQ100 是 XHSC 官方推出的开发板，搭载 HC32F472PETI 芯片，基于 ARM Cortex-M4 内核，最高主频 120 MHz，具有丰富的板载资源，可以充分发挥 HC32F472PETI 的芯片性能。
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开发板外观如下图所示：
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@@ -22,7 +22,7 @@ EV_F472_LQ100 是 XHSC 官方推出的开发板，搭载 HC32F472PETI 芯片，
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EV_F472_LQ100 开发板常用 **板载资源** 如下：
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- MCU：HC32F472PETI，主频200MHz，256KB FLASH，68KB RAM
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- MCU：HC32F472PETI，主频120MHz，512KB FLASH，68KB RAM
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- 外部RAM：IS62WV51216(SRAM，1MB)
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- 常用外设
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- LED：3 个，User LED(LED0、LED1、LED2)。
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