DataFlash® Is...DataFlash FEATURESDataFlash CommandsDigikey PricesBETTER THAN OTHER FLASHIDEAL FOR DATA STORAGEThe DataFlash ExtraDataFlash DEVICE FAMILYDIGITAL ANSWERING MACHINE BLOCK DIAGRAMDIGITAL ANSWERING MACHINE VOICE STORAGE CHARACTERISTICSDIGITAL ANSWERING MACHINE MEMORY MAP — 4M DataFlashDIGITAL ANSWERING MACHINE MESSAGE MANAGER TABLEDIGITAL ANSWERING MACHINE INCOMING MESSAGE STORAGEDIGITAL ANSWERING MACHINE DELETED MESSAGESDIGITAL ANSWERING MACHINE “CLEAN UP” OPERATION — RESTRUCTURINGDIGITAL ANSWERING MACHINE SMALL SECTORS ARE BETTERDIGITAL ANSWERING MACHINESDataFlashTM… Pure GeniusQ4 2002 - Slide 1•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 flexibilityDataFlashTM… Pure GeniusQ4 2002 - Slide 2– 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 ACCESSDataFlash FEATURESDataFlashTM… Pure GeniusQ4 2002 - Slide 4DataFlash CommandsDataFlashTM… Pure GeniusQ4 2002 - Slide 5Digikey Prices Part Size Page Size # Pages Price/100AT45DB041B 4 Mbit 264 bytes 2048 $2.07AT45DB081B 8 Mbit 264 bytes 4096 $2.79AT45DB161B 16 Mbit 528 bytes 4096 $3.79AT45DB321B 32 Mbit 528 bytes 8192 $5.51AT45DB642 64 Mbit 1056 bytes 8192 $10.94DataFlashTM… Pure GeniusQ4 2002 - Slide 6•Traditional Flash, NAND and other serial flash are Not Ideal for Data Storage–Large blocks (4K to 128K bytes) must be erased at a time–Makes data manipulation difficult–External RAM must be used to manipulate small amounts of data•DataFlash Incorporates On-Chip SRAM–Allows true EEPROM emulation–A single byte can be modified without the use of any external RAM–All data manipulation operations are totally self-containedBETTER THAN OTHER FLASHLARGE BLOCKFLASHMCUSRAM(32K to 1M)•Added Cost•Extra Board Space•Added Weight•Reduced Battery LifeDataFlashTM… Pure GeniusQ4 2002 - Slide 7IDEAL FOR DATA STORAGEDATA STORAGE REQUIREMENT DataFlash FEATURESIMPLE DATA MANIPULATION – Small Pages– On-Chip SRAM Buffers– Single-Cycle ProgrammingRELIABLE MEMORY – 100% Good Bits (NOR flash)E2PROM EMULATION – Small Pages– Byte Alterability(Using On-Chip SRAM Buffers)ERROR DETECTION/CORRECTION – COMPARE Command– Extra 8 or 16 Bytes Per Page(to Append Checksums)DataFlashTM… Pure GeniusQ4 2002 - Slide 8The DataFlash ExtraThe DataFlash Extra•Every DataFlash Comes With Extra Memory–DataFlash has more memory than “equivalent” density Flash products»Every DataFlash page includes extra bytes for code or data storage•Save money! –Integrate the EE2 function and Code size over runs can still fit in the original target density!OtherExpected DensityExtra Total Serial or Parallel Flash1024-Kbits 32-Kbits 1056-Kbits 1024-Kbits2048-Kbits 64-Kbits 2112-Kbits 2048-Kbits4096-Kbits 128-Kbits 4224-Kbits 4096-Kbits8192-Kbits 256-Kbits 8448-Kbits 8192-Kbits16,384-Kbits 512-Kbits 16,896-Kbits 16,384-Kbits32-Mbit 1-Mbit 33-Mbit 32-Mbit64-Mbit 2-Mbits 66-Mbit 64-Mbit128-Mbit 4-Mbits 132-Mbit 128-Mbit256-Mbit 8-Mbits 264-Mbit 256-MbitDATAFLASH® MEMORY COMPARISONDensity1MDataFlash Memory256M2M4M8M16M32M64M128MDataFlashTM… Pure GeniusQ4 2002 - Slide 9128M (x1/x8)AT45DB1282DataFlash DEVICE FAMILY•Single Voltage•Multiple Architectures•Multiple Interfaces•Die shrinks of all densities ensure long term support and price reduction path199719981999 2000DEVICES= Year of Introduction200120022MAT45D/DB0214MAT45D/DB0418MAT45D/DB0811MAT45D/DB0112MAT45D/DB0211MAT45D/DB0112MAT45D/DB0214MAT45D/DB0418MAT45D/DB0811MAT45DB0112MAT45DB0214MAT45D/DB0418MAT45DB08116MAT45DB16132MAT45DB3214MAT45D/DB0418MAT45D/DB08116MAT45D/DB16116MAT45D/DB16132MAT45DB32164M (x1/x8)AT45DB6421MAT45DB011B2MAT45DB021B4MAT45DB041B8MAT45DB081B16MAT45DB161B32MAT45DB321B64M (x1/x8)AT45DB6421MAT45DB011B2MAT45DB021B4MAT45DB041B8MAT45DB081B16MAT45DB161B32MAT45DB321B64M (x1/x8)AT45DB642128M (x1/x8)AT45DB128220031MAT45DB011B2MAT45DB021B4MAT45DB041B8MAT45DB081B16MAT45DB161B32MAT45DB321B64M (x1/x8)AT45DB642256M (x1/x8)AT45DB2562DataFlashTM… Pure GeniusQ4 2002 - Slide 10DIGITAL ANSWERING MACHINEBLOCK DIAGRAMDataFlashDIGITALSIGNALPROCESSORµ-LAWCODECHOSTMCULINEINTERFACETELEPHONE LINERING DETECTHOOK CONTROLSPEAKERMICDISPLAYKEYPADPLAY REW FFDEL MEMO TIMEDataFlashTM… Pure GeniusQ4 2002 - Slide 11DSP 1 DSP 2 DSP 3SILENCE COMPRESSION: YES YES NOCOMPRESSED DATA RATE: 2.4 KBPS 4.35 KBPS 5.44 KBPSTIME PER BIT: 416.67 µs/bit 229.89 µs/bit 183.82 µs/bitNO. OF BYTES FOR 1 SECOND OF VOICE: 300 bytes 544 bytes 680 bytesDIGITAL ANSWERING MACHINEVOICE STORAGE CHARACTERISTICS4M SERIAL DataFlashENTIRE ARRAY 30.04 min. 16.57 min. 13.25 min.PROTECTED REGION (OGM / VOICE PROMPTS) 3.75 min. 2.07 min. 1.66 min.NON-PROTECTED REGION (ICM) 26.28 min. 14.50 min. 11.60 min.2M SERIAL DataFlashENTIRE ARRAY 15.02 min. 8.29 min. 6.63 min.PROTECTED REGION (OGM / VOICE PROMPTS) 3.75 min. 2.07 min. 1.66 min.NON-PROTECTED REGION (ICM) 11.26 min. 6.21 min. 4.97 min.MAXIMUM VOICE STORAGE TIMESDataFlashTM… Pure GeniusQ4 2002 - Slide 12•Protected Region–256 pages total (12.5%)–Preprogrammed information that never changes»Voice prompts for remote access»Time/day stamp recordings–Outgoing message (changes infrequently)•Message Manager Table–99 pages total (4.83%)»Allows addressing of 99 messages–Header information for each message•Incoming Message Storage–1693 pages total (82.67%)–13.7 minutes at 4.35 kbps data rateDIGITAL ANSWERING MACHINEMEMORY MAP — 4M DataFlashSECTOR 0
View Full Document
Unlocking...