diff --git a/Inc/PwmFlagchip.h b/Inc/PwmFlagchip.h
index 96f51c8..416a8f1 100644
--- a/Inc/PwmFlagchip.h
+++ b/Inc/PwmFlagchip.h
@@ -44,7 +44,7 @@ void Get_Set_Tpu_PwmCallback(tPwmFlagchip *env);
 
 #define TPU_FREQ (BUS_CLK / SCG_CLK_DIV)
 
-#define PWM_FREQ 50 // 100 Hz
+#define PWM_FREQ 100 // 100 Hz
 
 #define PERIOD_TICKS (TPU_FREQ / PWM_FREQ)
 
diff --git a/Src/PwmFlagchip.c b/Src/PwmFlagchip.c
index a00b595..30fa06b 100644
--- a/Src/PwmFlagchip.c
+++ b/Src/PwmFlagchip.c
@@ -37,7 +37,7 @@ void PWM_Initial(
     env->etpu_pwmconfig_tbl.bPwmUseTCR2 = (bool) false;
     env->etpu_pwmconfig_tbl.u32ActiveTime = ActiveTime;
     env->etpu_pwmconfig_tbl.u32PeriodTime = PeriodTime;
-    env->etpu_pwmconfig_tbl.bActiveHigh = (bool) true;
+    env->etpu_pwmconfig_tbl.bActiveHigh = (bool) false;
 
 
     env->etpu_Int_config_tbl.bEventIntEn = (bool) true;