Atmel Corporation - · PDF fileAtmel Corporation DataFlash® and ARM Microcontrollers ... 32-lead PLCC. DataFlash ... Slide 13 Atmel ARM Products

Atmel Corporation

DataFlash® and ARM MicrocontrollersThe ideal system solution

DataFlash®… Pure Genius

ARM and DataFlash 2003-Slide 2

• Ideal for Data Storage Applications

– Digital voice storage

– Digital image storage

– Text/data storage

• Ideal for Code Storage Applications

– Many applications execute code out of RAM instead of Flash

– Program Code is stored in DataFlash and shadowed into RAM

– One DataFlash can store both code and data!

• The #1 Serial Interface Flash Family Since 1997!

DataFlash® Is...• Low Pin Count, Feature Rich Sequential Access Flash

• Incorporates Features Not Found in Other Flash

– Unique software and hardware features

– Features designed to provide optimum flexibility



NOR Flash MemoryArray with Small Pages

SPI compatibleSerial Interface

Chip SelectInput allows

multipledevices on the

same bus

RESETRESET input inputallows theallows theSystem toSystem to

Terminate AnyTerminate AnyOperationOperation

Write ProtectWrite ProtectProvides methodProvides method

to protect ato protect aportion of theportion of thememory Arraymemory Array

Dual SRAM BuffersDual SRAM Buffers to toprovide enhancedprovide enhanced

flexibility andflexibility andsimultaneous read orsimultaneous read or

write operationswrite operations

HighSpeedClock

MultipleMultipleData PathsData Pathsfor Readingfor Readingand Writingand Writing

RDY/BSYRDY/BSYoutputoutput

provides theprovides thedevice statusdevice status

I/O INTERFACEI/O INTERFACE

SISI SOSO

FLASH MEMORY ARRAY

PAGE SIZE = BUFFER SIZE

BUFFER 1BUFFER 1 BUFFER 2BUFFER 2SCKSCK

WPWP

RESETRESET

RDY/BSYRDY/BSY

DataFlash® Block Diagram

CSCS



– 264 bytes (1M, 2M, 4M, and 8M)

– 528 bytes (16M and 32M)

– 1056 bytes (64M and 128M)

– 2112 bytes (256M)

– Separate erase cycle not required prior to writing

– Same size as a DataFlash page

– Eases data manipulation

– Allows self-contained read-modify-write operations

– Uses proven NOR Flash technology

– 2.7V and 2.5V read and write

– 4mA-5mA typical read current

– Simple serial interface (SPI compatible)

– Dual-interface (serial and 8-bit) on 64M+ densities

– Low active pin count

100% GOOD BITS

SINGLE CYCLE PROGRAMMING

ON-CHIP SRAM BUFFERS

FEATURE

VERY SMALL PAGE SIZES

SINGLE VOLTAGE OPERATION

SEQUENTIAL ACCESS

DATAFLASH FEATURES



DataFlash vs. Parallel Flash– Parallel Flash Not Needed - (code shadowing or data storage)

– Pad limitation on the ASIC can easily occur

– A serial memory reduces the number of bond pads on theASIC

• Design using a 4Mbit Parallel Flash• 30 Interface Pins Required (19 Address, 8 Data, 3 Control)

• ASIC May Be Pad Limited Because of Parallel Flash Interface

• Design using a 4Mbit DataFlash• Only 4-7 Interface Pins Required

• Reduces Number of Bond Pads on the ASIC• Reduces the ASIC’s Die Size• Reduces the ASIC’s Package Size and Pin Count• Saves Board Space (8-pin SOIC vs. 32-pin PLCC)

DataFlash saves Money!

8-lead SOIC

32-lead PLCC



Parallel flash requires 39signals to be routed. 20address, 3 control and 16 I/O’s 48-pin TSOP - 240mm2

ASIC/micro

16Mbitflash

A19

A0

I/O0

I/O15

20 Address lines

16 Data lines

ASIC/micro

16MbitData-Flash

SI

SO

CS#

SCK

DataFlash requires only 4signals to be routed

DataFlash greatly reduces ASIC pin count andsimplifies system routing

Parallel flash Vs DataFlash

28-pin TSOP - 107mm2

8-pin CASON - 48mm2

Lower System

Cost!

CE#OE#WE#

Lower system power!

Reduced switching noise!



128M (x1/x8)AT45DB1282

• Single Voltage

• Multiple Architectures

• Multiple Interfaces

• Die shrinks for all densities-ensures long-term costeffectiveness and support

1997 1998 1999 2000

DE

VIC

ES

= Year of Introduction

2001 2002

2MAT45D/DB021

4MAT45D/DB041

8MAT45D/DB081

1MAT45D/DB011

2MAT45D/DB021

1MAT45D/DB011

2MAT45D/DB021

4MAT45D/DB041

8MAT45D/DB081

1MAT45DB011

2MAT45DB021

4MAT45D/DB041

8MAT45DB081

16MAT45DB161

32MAT45DB321

4MAT45D/DB041

8MAT45D/DB081

16MAT45D/DB161

16MAT45D/DB161

32MAT45DB321

64M (x1/x8)AT45DB642

1MAT45DB011B

2MAT45DB021B

4MAT45DB041B

8MAT45DB081B

16MAT45DB161B

32MAT45DB321B

64M (x1/x8)AT45DB642

1MAT45DB011B

2MAT45DB021B

4MAT45DB041B

8MAT45DB081B

16MAT45DB161B

32MAT45DB321B

64M (x1/x8)AT45DB642

2003

1MAT45DB011B

2MAT45DB021B

4MAT45DB041B

8MAT45DB081B

16MAT45DB161B

32MAT45DB321B

64M (x1/x8)AT45DB642

The DataFlash Family



PACKAGE OPTIONS

8-pin Solution -

» 8-pin SOIC (EIAJ - 5mm x 8mm) - 1M, 2M, 4M

» 8-pin CASON (6mm x 8mm) - 8M and 16M - Production Now!

– 8-pin SOIC and 8-pin CASON are footprint compatible and allow aneasy upgrade path!

• Easy to handle packages for consumer products

– 28-pin SOIC

» Upgrade path for 2M through 32M

• Small form-factor packages for portable products

– 28-pin TSOP - Upgrade path for 2M through 16M

– 8-pin SOIC (EIAJ) - Upgrade path for 1M through 4M

– 8-pin CASON- 8M and 16M, upgrade path from SOIC

– 14-pin TSSOP for 1M

– CBGA upgrade path for 1M through 256M

» All CBGAs have a 1mm ball pitch

8-pin SOIC

14-pin TSSOP

28-pin TSOP

28-pin SOIC

24-ball CBGA7mm x 9.5mm

8-ball dBGA

24-ball CBGA6mm x 8mm



8-pin Road Map128Mbit in 8-pins mid 2004

DataFlash will offer 8-pin compatible solutions at higher andhigher densities!

• Today- 1M thru 4M in SOIC, 8M and 16M in CASON•SOIC and CASON are footprint compatible

• 0.18um- 32M in CASON (Q403)• 0.13um- 64M and 128M in CASON!

CASON socket adapter by Emulation TechnologyAS-08-20-01-ML-6 www.emulation.com



• The DataFlash Is the Only Nonvolatile Memory YourDesign Needs

– Flexible architecture allows DataFlash to store all of your codeand data

SECTOR 0 (8 Pages)SECTOR 0 (8 Pages) E2PROM DataE2PROM Data

SECTOR 1 (248 Pages)SECTOR 1 (248 Pages) Boot BlockBoot Block

Program CodeProgram CodeSECTOR 2 (256 Pages)SECTOR 3 (256 Pages)SECTOR 2 (256 Pages)SECTOR 3 (256 Pages)

SECTOR 30 (256 Pages)SECTOR 31 (256 Pages)SECTOR 30 (256 Pages)SECTOR 31 (256 Pages)

••••••

Data StorageData StorageSECTOR 32 (256 Pages)SECTOR 33 (256 Pages)SECTOR 32 (256 Pages)SECTOR 33 (256 Pages)

SECTOR 63 (256 Pages)SECTOR 64 (256 Pages)SECTOR 63 (256 Pages)SECTOR 64 (256 Pages)

••••••

ProtectedProtectedbybyWPWP

128M DataFlash Example128M DataFlash Example

• Boot code to be shadowed• Doesn’t get updated and needs to be locked• Store it uncompressed for fast shadow time• Use DataFlash sector 1

• Boot code to be shadowed• Doesn’t get updated and needs to be locked• Store it uncompressed for fast shadow time• Use DataFlash sector 1

• Program code to be shadowed• Store it compressed to save space• Atmel can provide the compression routines

• Program code to be shadowed• Store it compressed to save space• Atmel can provide the compression routines

• Nonvolatile user data space• Store data or downloaded applications• Atmel can provide the following:

• Flash file system• ECC• Wear leveling

• Nonvolatile user data space• Store data or downloaded applications• Atmel can provide the following:

• Flash file system• ECC• Wear leveling

• Configuration/parametric data• Typically stored in serial E2PROM• Use DataFlash sector 0 instead!

• Configuration/parametric data• Typically stored in serial E2PROM• Use DataFlash sector 0 instead!



• Time to Market Is Key in Today’s Competitive Environment

– System designers want “canned” solutions to reducedevelopment time

• The DataFlash Software Suite Provides Extensive Solutions

– Basic drivers for all DataFlash functions

– Flash file system (FAT12 and FAT16 based)

– Error detection and correction

– Wear leveling and Auto Page Rewrite routines

– Compression and decompression

– All code is written in C

• Software and Manuals (Soft Copy) Provided Free of Charge

– Customers must sign an Atmel license agreement

• Available NOW

DataFlash Software Suite DFSSTM



• DataFlash is an ideal external memory solution!

– ARM 9 and ARM 7 products with native boot support forDataFlash!

» AT91RM9200 (Arm9) and AT91RM3400 (Arm7)

» The DataFlash Card is used for Program Code storage on theARM9 development kit. AT91RM9200-DK

– Other ARM 7 products can interface with DataFlash as well

» AT91M63200, AT91M55800A and AT91M42800A have an SPIinterface

» Other ARM 7 products can interface to DataFlash using GPIO(general purpose input/output pins)

• Refer to Software SPI Master Implementation applicationnote

ARM Based Solutions



Atmel ARM ProductsUse DataFlash for Program Code Storage

• Program code stored in serial DataFlash

• On-chip Bootloader “shadows” theprogram code from DataFlash into SDRAMat system startup

• Application firmware runs out of SDRAM

• Uses DataFlash cards for easy systemupgrade

• Benefits

– Reduced board space, Powerconsumption and Cost

– DataFlash can be used for data storagealso

– Lower load on high speed externalmemory bus improves speed and EMI

ROM

I

DataFlash

SDRAM

EBI

ARM920

Program codestored here

Program code is executed from SDRAM

At power upthe programcode is read fromDataFlash andwritten into SDRAM

SPI



ARM9 Development KitAT91RM9200-DK

DataFlash CardMMC/SD-Card

SC Reader

Ethernet 10/100

JTAG ICEETM Trace

Serial Debug Port

UART Modem Port

Monitor Connector 800x600DUAL USB Host Port USB Device Port

IrDA

Compact Flash

Smart Media

Atmel Fingerchip(on-request)

Phone Line

Audio output

Program code storedin DataFlash Card



ASPECT BENEFITS

FLEXIBLE ARCHITECTURE – Reduces software complexity and overhead

– Small page sizes – Less code space required

– On-chip SRAM buffers – No need for separate serial E2PROM

– Easy data manipulation – Reduces and/or eliminates need for "buffer RAM"

– Saves development time and system cost!

LOW PIN COUNT SOLUTION – Smaller package options compared to parallel Flash

– Minimum of 4 pins needed to interface – Reduces needed board space

– Small package options available – Simplified PCB routing

– Higher board reliability

– Reduces ASIC pin counts

– Can reduce ASIC die and package sizes

– Saves development time and system cost!

Key DataFlash PointsKey DataFlash Points

• Don’t Forget that DataFlash Is Also a Low Power Solution

– 4mA to 5mA typical read current

– 2µA typical standby current

• Don’t Forget that DataFlash Is Also a Low Power Solution

– 4mA to 5mA typical read current

– 2µA typical standby current

DATAFLASH CAN PROVIDE A TOTAL SYSTEM COST SAVINGSDATAFLASH CAN PROVIDE A TOTAL SYSTEM COST SAVINGS

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Atmel Corporation - · PDF fileAtmel Corporation DataFlash® and ARM Microcontrollers ... 32-lead PLCC. DataFlash ... Slide 13 Atmel ARM Products