diff --git a/stm32f407_lvgl_8080lcd/Core/Src/main.c b/stm32f407_lvgl_8080lcd/Core/Src/main.c
index 2d74414..23263a1 100644
--- a/stm32f407_lvgl_8080lcd/Core/Src/main.c
+++ b/stm32f407_lvgl_8080lcd/Core/Src/main.c
@@ -135,9 +135,9 @@ void SystemClock_Config(void)
   RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
   RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
   RCC_OscInitStruct.PLL.PLLM = 4;
-  RCC_OscInitStruct.PLL.PLLN = 168;
+  RCC_OscInitStruct.PLL.PLLN = 192;
   RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
-  RCC_OscInitStruct.PLL.PLLQ = 7;
+  RCC_OscInitStruct.PLL.PLLQ = 8;
   if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
   {
     Error_Handler();
@@ -152,7 +152,7 @@ void SystemClock_Config(void)
   RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
   RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
 
-  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
+  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK)
   {
     Error_Handler();
   }
@@ -178,7 +178,7 @@ static void MX_TIM3_Init(void)
 
   /* USER CODE END TIM3_Init 1 */
   htim3.Instance = TIM3;
-  htim3.Init.Prescaler = 167;
+  htim3.Init.Prescaler = SystemCoreClock / 1000000 - 1;
   htim3.Init.CounterMode = TIM_COUNTERMODE_UP;
   htim3.Init.Period = 999;
   htim3.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;
@@ -235,7 +235,7 @@ static void MX_TIM6_Init(void)
 
   /* USER CODE END TIM6_Init 1 */
   htim6.Instance = TIM6;
-  htim6.Init.Prescaler = 83;
+  htim6.Init.Prescaler = SystemCoreClock / 1000000 / 2 - 1;
   htim6.Init.CounterMode = TIM_COUNTERMODE_UP;
   htim6.Init.Period = 999;
   htim6.Init.AutoReloadPreload = TIM_AUTORELOAD_PRELOAD_DISABLE;
diff --git a/stm32f407_lvgl_8080lcd/MDK-ARM/stm32f407_lvgl_8080lcd.uvoptx b/stm32f407_lvgl_8080lcd/MDK-ARM/stm32f407_lvgl_8080lcd.uvoptx
index 7adc717..c35ea72 100644
--- a/stm32f407_lvgl_8080lcd/MDK-ARM/stm32f407_lvgl_8080lcd.uvoptx
+++ b/stm32f407_lvgl_8080lcd/MDK-ARM/stm32f407_lvgl_8080lcd.uvoptx
@@ -120,7 +120,7 @@
         <SetRegEntry>
           <Number>0</Number>
           <Key>CMSIS_AGDI</Key>
-          <Name>-X"Any" -UAny -O206 -S8 -C0 -P00000000 -N00("") -D00(00000000) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO11 -FD20000000 -FC1000 -FN1 -FF0STM32F4xx_1024.FLM -FS08000000 -FL0100000 -FP0($$Device:STM32F407ZGTx$CMSIS\Flash\STM32F4xx_1024.FLM)</Name>
+          <Name>-X"Any" -UAny -O206 -S8 -C0 -P00000000 -N00("ARM CoreSight SW-DP") -D00(2BA01477) -L00(0) -TO65554 -TC10000000 -TT10000000 -TP20 -TDS8007 -TDT0 -TDC1F -TIEFFFFFFFF -TIP8 -FO11 -FD20000000 -FC1000 -FN1 -FF0STM32F4xx_1024.FLM -FS08000000 -FL0100000 -FP0($$Device:STM32F407ZGTx$CMSIS\Flash\STM32F4xx_1024.FLM)</Name>
         </SetRegEntry>
         <SetRegEntry>
           <Number>0</Number>
diff --git a/stm32f407_lvgl_8080lcd/README.md b/stm32f407_lvgl_8080lcd/README.md
index 8d2208a..bb3a326 100644
--- a/stm32f407_lvgl_8080lcd/README.md
+++ b/stm32f407_lvgl_8080lcd/README.md
@@ -1,6 +1,6 @@
 # 基于STM32F407ZG与320480 LCD的LVGL例程
 
 - lvgl 8.3.8
-- 裸机，无RTOS
+- 裸机，无RTOS，CPU略微超频至192MHz
 - `ILI9486`主控，320*480分辨率的LCD
 - lvgl的堆放置于CCM内存中