The SD Card Reader reference design allows users to read and write files stored in a SD Card from a PC or another USB host enabled system through the full speed USB module included. The SD Card interface is based on SPI protocol. Mass Storage Device class is used to implement the high level communication between the host application and data memory.

The SD Card reader reference design shows how easy are to interface a SD Card to an 8-bit MCU with a SPI module. This design is an alternative Flexis JM family development board; The user can exchange a MCF51JM128 for a MC9S08JM60 (pin-to-pin compatible). It includes two user LED’s, one button and one expansion header that allows users to access other MCU peripherals like SPI, RGPIO, etc.

The MCF51JM family is part of the NXP Flexis microcontroller series, the connection point on NXP's Controller Continuum where 8-bit and 32-bit compatibility becomes a reality. The Flexis series of devices includes complementary families of 8-bit S08 and 32-bit V1 ColdFire microcontrollers that have a common set of peripherals and development tools to deliver the ultimate in migration flexibility.

The S08JM family extends NXP’s entry-level USB portfolio with one of the industry’s most cost-effective USB control solutions. Featuring on-chip USB 2.0 full-speed device support, it provides a fast, economical and easy way to standardize serial communications.

Key Application: SD Card Reader