Interfacing Microcontrollers with SD Card
The secure digital card (SD) is a low cost, non-volatile memory card format developed by the SD Card Association. Since its inception back at the start of the century, the demand for this medium-sized, energy and space efficient, memory storage device has been growing at a fast rate. Therefore, to meet the market requirements, the SDA was set up as a non-profit organization to promote and create SD card standards. There are various topics related to the SD card such as the different device families, speed classes, smart cards, card security and so on and it is used in various markets like digital cameras, personal computers, and embedded systems. Some of the standard variations include SD, SDHC, SDXC, SD-ultra high speed etc. The microSD is the miniaturized SD memory card format with a small form factor and is widely used in various electronic devices. What we are going to learn is the use of SD cards in an embedded system. To be specific, we will be dealing with the use of SD cards in small embedded systems.
