diff --git a/Examples/LL/I2C/PCF8574_1602LCD/bsp_i2c.c b/Examples/LL/I2C/PCF8574_1602LCD/bsp_i2c.c
index 9a0c87d..ff19de3 100644
--- a/Examples/LL/I2C/PCF8574_1602LCD/bsp_i2c.c
+++ b/Examples/LL/I2C/PCF8574_1602LCD/bsp_i2c.c
@@ -14,6 +14,8 @@ __IO uint32_t   i2cState  = I2C_STATE_READY;
 void BSP_I2C_Config(void)
 {
   LL_I2C_InitTypeDef I2C_InitStruct;
+
+  LL_I2C_DeInit(I2C1);
   /* 
    * Clock speed:
    * - standard = 100khz, if PLL is on, set system clock <= 16MHz, or I2C might not work
diff --git a/Examples/LL/I2C/PCF8574_1602LCD/pcf8574_lcd.c b/Examples/LL/I2C/PCF8574_1602LCD/pcf8574_lcd.c
index 0b11a2c..4daa8c6 100755
--- a/Examples/LL/I2C/PCF8574_1602LCD/pcf8574_lcd.c
+++ b/Examples/LL/I2C/PCF8574_1602LCD/pcf8574_lcd.c
@@ -65,9 +65,30 @@ void LCD_SetCGRAM(uint8_t lcd_addr, uint8_t char_addr, const uint8_t *char_font)
   LCD_SendCommand(lcd_addr, LCD1602_CMD_CGRAM_ADDR);
 }
 
+/**
+ * Initialize LCD
+ * 
+ * Described in HD44780 datasheet P45, procedures on 4-bit initializations,
+ * - Wait for more than 40 ms after VCC rises to 2.7 V
+ * - Function set (Interface is 8 bits long), Wait for more than 4.1 ms
+ * - Function set (Interface is 8 bits long), Wait for more than 100 µs
+ * - Function set (Interface is 8 bits long)
+ * - Function set (Set interface to be 4 bits long.) Interface is 8 bits in length
+ * - Function set (Interface is 4 bits long. Specify the number of display lines and character font.)
+ *   The number of display lines and character font cannot be changed after this point.
+*/
 void LCD_Init(uint8_t lcd_addr)
 {
-  // 4-bit mode, 2 lines, 5x8 format
+  // need at least 40ms after power rises above 2.7V
+  LL_mDelay(50);
+  // start in 8-bit mode, 3 commands
+  LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_8B_1L_5X8);
+  LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_8B_1L_5X8);
+  LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_8B_1L_5X8);
+  // set it to 4-bit mode, interface is still 8-bit
+  LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_4B_1L_5X8);
+
+  // now interface is 4-bit, set it to 2 lines and 5x8 font
   LCD_SendCommand(lcd_addr, LCD1602_CMD_FUNC_4B_2L_5X8);
   // display & cursor home
   LCD_SendCommand(lcd_addr, LCD1602_CMD_HOME);