Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to choose the device you wish to talk to. Suggested Reading Stuff that would be helpful to know before

SD cards can be interfaced to microcontrollers using two different protocols: The SD card protocol and the SPI protocol. The SPI protocol is the most commonly used protocol at the moment. In this tutorial, we will use the SPI protocol. Figure 3 below shows a typical SD card interface to a PIC microcontroller in SPI mode. Blog Entry Using Serial Peripheral Interface (SPI) with Microchip PIC18 Families Microcontroller September 12, 2010 by rwb, under Microcontroller.. The Serial Peripheral Interface (SPI) is one of the popular embedded serial communications widely supported by many of today's chip manufacture and it considered as one of the fastest serial data transfer interface for the embedded system. This PIC microcontroller section covers some interesting PIC microcontroller projects as well as a PIC tutorial series to help you getting started with PIC microcontrollers and Embedded systems. This section will cover all basic and advance concepts of PIC microcontrollers (we have mainly used PIC16F877A here for tutorials). SPI transfers data at high speed data. AVR microcontroller contains on chip SPI interface. This article will explore the hardware configuration and programming of SPI. Serial Peripheral Interface is a synchronous, full-duplex protocol. SPI is also known as "3-wire interface" protocol because it needs 3 communication lines named MISO, MOSI The native interface uses four lines for data transfer where the microcontroller has SD card controller module and it needs separate license to use it. Since the SPI is a widely used protocol and it is available in most low-cost microcontrollers, the SPI mode is t