FLASH MEMORY PROJECT | CONTROLLER FOR FLASH MEMORY

Boris MittelbergSupervisor: Amit Berman2012-2013, semester A

Final presentation

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RY PROJECT | ABSTRACT

FLASH MEMORY

The flash memory is a part of each electronic device

• Usb storage devices• Music/video player• Mobile phone• Computer storage• Memory cards

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FLASH MEMORY

Sometimes reliability is the main factor• BIOS, 4-64Mb serial devices• Automotive and space industriesBut main consumers are interested in capacity today

Today solutions• Are made of MLC flash• Use smart controllers • Are proprietary

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PROJECT OVERVIEW

Main goal• Create basic memory controller, compatible with ONFI spec

• Learn uController design• Understanding the FW basics • Connect flash memory to controller• Create user-friendly memory controller software

Implementation requirements• Memory read/write/erase • Basic FW funtions• init• reset • write block• read block• send ONFI commands• UART communication

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RMPLATFORM

TI Stellaris LaunchPad

o Ultra low power (and low-cost) boardo Cortex-M4 core @80MHzo Enough GPIO pinso Video tutorialso Easy to use

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ITECTURE

HARDWARE ABSTRACTION LAYER

ONFI MLC NANDMicron MT29F64G08CBAAAWP

Stellaris LaunchPad– FW control, and power

PC (IO)via microUSB

PC (Debug and control)via microUSB (debug port)

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ITECTURE

HW AND SW STRUCTURE

MICRONMT29F64G08CBAAAWP

TI MCU LX4F120H

ONFI

TI StellarisLaunch Pad

LM4F120XLHOST

Power

UART over USB

specs

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ARD CO

NECTIO

NS

HW PINOUT

Pinout from NAND chip to Stellaris

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ARCHITECTU

RESW ARCHITECTURE

GPIO_funcs

• Definitions for GPIO pins and basic memory functions

TIMINGS

• Definitions and macro to translate SW timings to HW, based on current frequency

COMMANDS

• Functions and definitions for UART commands

…• Any functionality

can be easily added…

ONFI_controller The main part of the project, initia-lization of memory and control of operations

*note: the FW and it’s components described in project book

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READ

This is an example of READ operation on the device

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ARCHITECTU

RESW ARCHITECTURE - GUI

Simple user-friendly GUI to communicate with FW via UART

Read pageWrite pageErase blockTest page

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EDU

LEApproximate project schedule

Registration took a while…

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OLS

TOOLS

Subversion system:Assembla SVN

uContriller programming:TI CCS v5

Terminal programming:MS Visual Studio

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DEMO

Erase block

Program page

Verify page

THE END

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OTO

SBONUS

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CIAL FAB VIDEO

BONUS