This repository contains firmware and project files for integrating the MC33816 injector driver with an STM32H7 microcontroller. This STM32H7-based board is the control board for the MC33816 development kit and communicates with the MC33816 over SPI. The MC33816 is used as a fuel injector / injector driver in automotive and embedded motor-control applications. The project includes STM32CubeMX (.ioc) configuration, STM32CubeIDE launch files, linker scripts and source folders produced by STM32CubeIDE.
Keywords: mc33816, MC33816, injector, injector driver, fuel injector, STM32H7, STM32CubeIDE, STM32CubeMX, firmware, embedded, motor driver, NXP, CAN, SPI, hardware integration, example project, control board, dev kit, ECU.
The MC33816 Fuel Injector Driver is a high-performance integrated circuit from NXP designed for automotive engine control applications. The MC33816 provides precise control of fuel injectors with features including SPI communication, advanced diagnostics, peak-and-hold drive capability, and integrated protection mechanisms.
The development kit combines the NUCLEO-H753ZI board (STM32H753ZI microcontroller) as the control platform with the KIT33816FRDMUG evaluation board for the MC33816 injector driver IC. This setup provides a complete reference platform for developing and testing fuel injection control algorithms.
- NUCLEO-H753ZI Schematics: mb1364-h753zi-c01-schematic.pdf
- NUCLEO-H753ZI User Manual: um2407-stm32h7-nucleo144-boards-mb1364-stmicroelectronics.pdf
- MC33816 Development Kit User Guide: KIT33816FRDMUG.pdf
- MC33816 Datasheet: MC33816.pdf
The following table shows the pin connections between the NUCLEO-H753ZI board and the MC33816 evaluation kit (KIT33816FRDMUG):
| Signal | NUCLEO-H753ZI Pin | MC33816 Kit Pin | Description |
|---|---|---|---|
| SPI_MOSI | PA7 (SPI1_MOSI) | MOSI | SPI Master Out Slave In |
| SPI_MISO | PA6 (SPI1_MISO) | MISO | SPI Master In Slave Out |
| SPI_SCK | PA5 (SPI1_SCK) | SCK | SPI Clock (add 2k7 pull-down) |
| SPI_CS | PD14 | CS | SPI Chip Select (active low) |
| Signal | NUCLEO-H753ZI Pin | MC33816 Kit Pin | Description |
|---|---|---|---|
| MC_RST | PA4 | RESET | MC33816 Reset (active low) |
| MC_DRV | PB4 | DRV_EN | Driver Enable |
| MC_IRQ | PE7 | IRQ | Interrupt Request (falling edge) |
| MC_FLAG0 | PG14 | FLAG0 | Status Flag 0 |
| MC_FLAG1 | PF5 | FLAG1 | Status Flag 1 |
| MC_FLAG2 | PF4 | FLAG2 | Status Flag 2 |
| MC_FLAG3 | PG12 | FLAG3 | Status Flag 3 |
| Signal | NUCLEO-H753ZI Pin | MC33816 Kit Pin | Description |
|---|---|---|---|
| MC_CLK | PF6 (TIM16_CH1) | CLK | External Clock Input |
| MC_DBG | PE8 | DEBUG | Debug Signal |
| Signal | NUCLEO-H753ZI Pin | MC33816 Kit Pin | Description |
|---|---|---|---|
| MC_OA_1 | PA0 (ADC1_INP16) | OA_OUT1 | Operational Amplifier Output 1 |
| MC_OA_2 | PA1 (ADC1_INP17) | OA_OUT2 | Operational Amplifier Output 2 |
Note: MC_OA_1 and MC_OA_2 signals require voltage divider (5V to 3V) to protect STM32H7 ADC inputs. The MC33816 outputs operate at 5V while STM32H7 ADC inputs are 3.3V tolerant.
| Signal | NUCLEO-H753ZI Pin | MC33816 Kit Pin | Description |
|---|---|---|---|
| MC_START1 | PB9 | START1 | Injector 1 Start Signal |
| MC_START2 | PB15 | START2 | Injector 2 Start Signal |
| MC_START3 | PC7 | START3 | Injector 3 Start Signal |
| MC_START4 | PB8 | START4 | Injector 4 Start Signal |
| MC_START5 | PB12 | START5 | Injector 5 Start Signal |
| MC_START6 | PC6 | START6 | Injector 6 Start Signal |
- Connect GND pins between NUCLEO-H753ZI and MC33816 kit
- Ensure proper power supply to MC33816 kit (refer to KIT33816FRDMUG documentation)
- MC33816 kit requires external power for high-current injector drivers
Note: Verify all pin assignments match your hardware configuration by reviewing the .ioc file in STM32CubeMX before connecting hardware.
- Provide a reference and starting project for developers integrating the MC33816 injector driver with STM32H7-based systems.
- Consolidate board- and MCU-specific configuration so the project can be opened, built and flashed from STM32CubeIDE or other ARM toolchains.
- Core/ - MCU application source and startup files
- Drivers/ - HAL and peripheral drivers
- Middlewares/ - Third-party middleware (LWIP, mbedTLS, etc.)
- USB_DEVICE/ - USB device stack (if used)
- web/ - Web assets (if any)
- Documents/ - Additional documentation
- STM32H7-MC33816.ioc - STM32CubeMX project file
- STM32H7-MC33816 Debug.launch / Release.launch - IDE launch configurations
- STM32H753ZITX_FLASH.ld / STM32H753ZITX_RAM.ld - Linker scripts
-
Clone the repository: git clone https://github.com/CodElecCz/STM32H7-MC33816.git
-
Open the project in STM32CubeIDE by opening STM32H7-MC33816.ioc or import the project workspace.
-
Generate code from CubeMX if needed, build the project, and flash using ST-Link or another programmer via the IDE launch configurations.
- Review and adapt pinout and clock configuration to match your hardware. The provided .ioc file contains the project's configuration used by CubeMX.
- Verify MCU and memory settings in the linker scripts before flashing to custom hardware.
- Confirm SPI pin assignments and timing when connecting to the MC33816 injector driver.
- Keep any sensitive keys, credentials, or private data out of the repository.
Contributions, bug reports and improvements are welcome. Open issues or submit pull requests with a description of the change and tested platforms.
Add a LICENSE file or specify your preferred license (e.g., MIT, Apache-2.0).
For questions or support, open an issue in this repository or contact the maintainer: https://github.com/CodElecCz