LS1C300B-SOM Loongson 1C core board

This is a SOM (System On Module) equipped with the Loongson 1C300B processor , using the DDR3 interface to draw out all pins.

Loongson 1C300B , 8M SDRAM , 8MB NOR Flash , 1.2V and 3.3V power supplies are integrated on a core board . At the same time, its size has been reduced to the size of a notebook DDR3 memory stick (6.76 X 3.82cm).

Therefore, I can simply use this core board in any of my future projects without having to draw the core PCB and DCDC of various voltages.

This saves a lot of time in reinventing the wheel.

In terms of design, this core board adopts the idea of ​​high cohesion and low coupling in software development, modularizing circuits responsible for different functional categories on a PCB , and then connecting them to each other on a carrier board.

This not only improves the development efficiency of subsequent projects , but also improves maintenance convenience .

The DDR3 interface has many pins and is relatively cheap (a notebook DDR3 socket can be purchased on TB for only three yuan). Therefore, the DDR3 interface stands out in the horizontal comparison of many interfaces and has become the core board’s external interface. interface.

In terms of use, because the power module has been integrated, you only need to provide 5V power supply to the core board, and the board can work normally.

Therefore, if you want to use Loongson in future projects, you only need a notebook DDR3 female socket and then provide it with 5V power supply.

In terms of production, the core board does not use any package that is not convenient for manual soldering. It can be easily soldered and put into use using solder paste, air gun and soldering iron.

It should be noted that in terms of production technology, the board thickness is 1.0 , the four-layer board, gold finger (tin finger) chamfering can be done or not.