A vehicular camera includes a lens, an image processor configured to receive images from the lens, and a microcontroller containing flash memory. The microcontroller is connected to the image processor by a first bus through which command data is communicated to the image processor from the microcontroller. The command data includes application instructions to draw application data from a selected point in the flash memory. The microcontroller is connected to the image processor by a second bus through which application data is communicated to the image processor from the flash memory.