AN1047: EFM8 NOR Flash USB MSD Reference Design
This application note describes the implementation of a USB Mass Storage Device with an external NOR-Flash memory.
A method of logical to physical address mapping is also implemented in this reference design. The full source code is included, which contains information about USB Mass Storage Device class specification, SCSI, and the logical to physical transition for EFM8UB1.
KEY POINTS:
● USB Mass Storage Device Class
● Logical to Physical address mapping
● NOR-Flash application
The USB Mass Storage Device (MSD) class is one of the most widely supported device classes among the USB device classes natively supported by popular operating systems. A USB device that supports this class can use the built-in drivers provided by the operating system without the need to install or maintain any custom device drivers. The USB MSD Reference Design utilizes this widespread support by providing device firmware for Silicon Labs USB microcontrollers that complies with the MSD class specification. In addition,as any page of the NOR-Flash to be programmed must be erased first, a method of logical to physical address mapping is implemented in the firmware to improve the performance and reliability of NOR-Flash arrays.
This document describes the various components of the device firmware in detail.
Note: This example builds upon the USB Mass Storage Reference Design described in AN282: USB Mass Storage Device Reference Design Programmer’s Guide. See this document for additional information.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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November 28th, 2016 |
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Rev. 0.1 |
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AN1047 |
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1011 KB |
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