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diff --git a/Marlin/src/pins/stm32f1/pins_CREALITY_V45x.h b/Marlin/src/pins/stm32f1/pins_CREALITY_V45x.h
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+++ b/Marlin/src/pins/stm32f1/pins_CREALITY_V45x.h
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+/**
+ * Creality v4.5.2 and v4.5.3 (STM32F103RET6) board pin assignments
+ */
+
+#if NOT_TARGET(__STM32F1__)
+  #error "Oops! Select an STM32F1 board in 'Tools > Board.'"
+#endif
+
+#define DEFAULT_MACHINE_NAME "Creality3D"
+
+//
+// Release PB4 (Z_STEP_PIN) from JTAG NRST role
+//
+#define DISABLE_DEBUG
+
+#define BOARD_NO_NATIVE_USB
+
+//
+// EEPROM
+//
+#if NO_EEPROM_SELECTED
+  #define IIC_BL24CXX_EEPROM                      // EEPROM on I2C-0
+  //#define SDCARD_EEPROM_EMULATION
+#endif
+
+#if ENABLED(IIC_BL24CXX_EEPROM)
+  #define IIC_EEPROM_SDA                    PA11
+  #define IIC_EEPROM_SCL                    PA12
+  #define MARLIN_EEPROM_SIZE               0x800  // 2Kb (24C16)
+#elif ENABLED(SDCARD_EEPROM_EMULATION)
+  #define MARLIN_EEPROM_SIZE               0x800  // 2Kb
+#endif
+
+//
+// Limit Switches
+//
+#define X_STOP_PIN                          PC4
+#define Y_STOP_PIN                          PC5
+#define Z_STOP_PIN                          PA4
+
+#define FIL_RUNOUT_PIN                      PA7
+
+//
+// Probe
+//
+#define PROBE_TARE_PIN                      PA5
+
+//
+// Steppers
+//
+#define X_ENABLE_PIN                        PC3
+#define X_STEP_PIN                          PB8
+#define X_DIR_PIN                           PB7
+
+#define Y_ENABLE_PIN                        PC3
+#define Y_STEP_PIN                          PB6
+#define Y_DIR_PIN                           PB5
+
+#define Z_ENABLE_PIN                        PC3
+#define Z_STEP_PIN                          PB4
+#define Z_DIR_PIN                           PB3
+
+#define E0_ENABLE_PIN                       PC3
+#define E0_STEP_PIN                         PC2
+#define E0_DIR_PIN                          PB9
+
+//
+// Temperature Sensors
+//
+#define TEMP_0_PIN                          PB1   // TH1
+#define TEMP_BED_PIN                        PB0   // TB1
+
+//
+// Heaters / Fans
+//
+
+#define FAN_SOFT_PWM
+
+//
+// SD Card
+//
+#define SD_DETECT_PIN                       PC7
+#define NO_SD_HOST_DRIVE                          // SD is only seen by the printer
+
+#define SDIO_SUPPORT                              // Extra added by Creality
+#define SDIO_CLOCK                       6000000  // In original source code overridden by Creality in sdio.h
+
+//
+// Misc. Functions
+//
+#define CASE_LIGHT_PIN                      PA6