The NuMicro® M480 series microcontroller M483KGCAE2A is based on the Arm® Cortex®-M4F kernel; when its operating frequency reaches as high as 192MHz, its operating current can reach as low as 130 µA/MHz, and the RTC standby current is only 500 nA. It supports the DSP instruction set and has integrated the Floating-Point Unit (FPU); its flash memory capacity is 256KB and supports eXecute-Only-Memory (XOM) used to protect program codes or data. The SRAM capacity is 128 KB and supports full Retention or partial Retention under standby mode; retaining 32 KB SRAM content only requires 10 µA, meeting the need of being low power.

M483KGCAE2A has a built-in image capturing module; the transmission interface supports CCIR656, CCIR601, and many other different types of data formats. It also has a binary 1-bit brightness calculation to reduce the use of the internal memory, as well as the hardware shrink function that allows faster execution of image reduction. When a high-specification camera is used, there are also hardware screen cropping and hardware frame rate reduction functions built-in that allows setting of the received image size and frame rate, so that data wouldn’t be unable to be received due to too much data. It also has direct memory access (DMA) to help data transmission and achieve the effect of reducing CPU load.

With the function described above, along with image recognition algorithm and DSP, M483KGCAE2A can capture digital signs from images and identify them; it is suitable for digital image recognition such as smart water meters and vehicle license plate identification, etc.

NuMaker-M483KG evaluation board

The main control board of NuMaker-M483KG includes an expansion interface for all M483KGCAE2A pins; it also includes an interface that is compatible with Arduino UNO, as well as external CMOS camera expansion board interface and flexible power supply designs so it can be easily used with various peripheral or Arduino module to perform development. The main control board also includes a current measurement interface that allows users to easily measure the power consumption of the microcontroller during the development process. 

• When using the NuMicro® M483KGCAE2A microcontroller, its functions are downward compatible with:
  • M483SGCAE
  • M482LGCAE
  • M482ZGCAE
• M483KGCAE2A all pin expansion interface
• Arduino UNO compatible interface
• CMOS camera expansion board interface
• Current measurement interface that can measure the power consumption of the microcontroller
• Flexible power supply design
  • VDD external input interface
  • USB port on the main control board
  • Vin with Arduino UNO interface
  • Nu-Link2-Me ICE USB port