(12) United States Patent
`Miura et a].
`
`(10) Patent N0.:
`(45) Date of Patent:
`
`US 7,136,978 B2
`Nov. 14, 2006
`
`US007136978B2
`
`(54) SYSTEM AND METHOD FOR USING
`DYNAMIC RANDOM ACCESS MEMORY
`AND FLASH MEMORY
`
`(75) Inventors: Seiji Miura, Hachioji (JP); Kazushige
`AyukaWa, Kokubunji (JP); Tetsuya
`IWamura, Akiruno (JP)
`
`(73) Assignee: Renesas Technology Corporation,
`Tokyo (JP)
`
`( * ) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`U.S.C. 154(b) by 394 days.
`
`(21) App1.No.: 10/445,922
`
`(22) Filed:
`
`May 28, 2003
`
`(65)
`
`Prior Publication Data
`
`US 2004/0049629 A1
`
`Mar. 11, 2004
`
`Foreign Application Priority Data
`(30)
`Sep. 11, 2002
`
`(JP)
`
`......................... .. P2002-265334
`
`(52)
`
`(51) Int. Cl.
`(2006.01)
`G06F 12/00
`(2006.01)
`G06F 12/02
`(2006.01)
`G06F 12/16
`US. Cl. ......................... .. 711/165; 711/170; 711/5;
`711/103; 711/105; 714/6; 365/23003; 365/51
`Field of Classi?cation Search .................. .. 711/5,
`711/103,105,149; 365/18511, 230.03,
`365/23005
`See application ?le for complete search history.
`
`(58)
`
`(56)
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`6,392,950 B1
`6,411,561 B1*
`6,587,393 B1*
`6,791,877 B1*
`6,847,575 B1*
`
`5/2002
`6/2002
`7/2003
`9/2004
`1/2005
`
`Ayukawa et a1.
`Ayukawa et a1. .... .. 365/23003
`
`Ayukawa et a1. .... .. 365/23003
`
`Miura et a1. ......... .. 365/185.11
`
`Ayukawa et a1. .... .. 365/23003
`
`2002/0199056 A1 * 12/2002 Ayukawa et al. ......... .. 711/106
`2003/0028733 A1 *
`2/2003 Tsunoda et al. .... ..
`711/154
`2004/0049629 A1 *
`3/2004 Miura et al. .............. .. 711/105
`2004/0223366 A1 * 11/2004 Miura et al. .............. .. 365/154
`2005/0232059 A1 * 10/2005 Miura et al. ......... .. 365/23003
`
`FOREIGN PATENT DOCUMENTS
`
`EP
`JP
`JP
`JP
`JP
`JP
`
`0 566 306 A2
`5-299616
`7-146820
`8-137736
`2001-510612
`2001-005723
`
`4/1993
`4/1992
`4/1994
`ll/l994
`10/1997
`6/1999
`
`(Continued)
`OTHER PUBLICATIONS
`
`“Data Sheet of Combination Memory (Stacked CSP), Flash
`Memory + RAM,” Model LRS1380, Sharp Corporation, Jun. 5,
`2001, pp. 1-36, reference pp. i-iv.
`
`Primary ExamineriBrian R. Peugh
`Assistant ExamineriJesse Diller
`(74) Attorney, Agent, or F irmiReed Smith LLP; Stanley P.
`Fisher, Esq.; Juan Carlos A. Marquez, Esq.
`
`(57)
`
`ABSTRACT
`
`A system and method are provided for using dynamic
`random access memory and ?ash memory. In one example,
`the memory system comprises a nonvolatile memory; syn
`chronous dynamic random access memories; circuits includ
`ing a control circuit Which is coupled With the nonvolatile
`memory and the synchronous dynamic random access
`memories, and controls accesses to the nonvolatile memory
`and the synchronous dynamic random access memories; and
`a plurality of input/output terminals coupled With the cir
`cuits, Wherein in data transfer from the nonvolatile memory
`to the synchronous dynamic random access memories, error
`corrected data is transferred.
`
`15 Claims, 29 Drawing Sheets
`
`D‘IKPR
`I
`
`BANKII
`
`FLASH
`
`rADaul u
`
`nADauin(
`\_.
`Auln download
`
`F-IPR
`‘
`
`Load/Slur:
`
`1124515’?
`
`r24575
`
`A F4.)
`
`[110240
`é r1l]24|]
`
`III]
`F‘ rl]
`‘7%
`
`/
`
`)
`
`F-REP
`
`BANKZ
`
`Load/Store
`
`BANK]
`
`IK-Arna
`
`IK—Araa/V
`BANKI]
`
`REG
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 1
`
`

`
`US 7,136,978 B2
`Page 2
`
`FOREIGN PATENT DOCUMENTS
`
`WO 98/29816
`
`10/1997
`
`2001-357684
`
`6/2000
`
`* cited by examiner
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 2
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 3
`
`

`
`U.S. Patent
`
`Nov. 14,2006
`
`Sheet 2 0f 29
`
`US 7,136,978 B2
`
`F I G. 2
`
`CHIP2(CTL_LOGIC)
`
`SDCUN
`
`CKE
`/CS
`CUM /RAS
`/cAs
`/WE
`DUMBO-DOMB1
`DCIMBZ-DCIMBB
`
`D-CKE
`D-/CS
`D-/RAS D-CUM
`D—/CAS
`D—/WE
`D1-DCIMU/DUML
`DZ-DOMU/DUML
`
`AU~A15
`
`MU
`
`AGEN
`
`l/Dl]~ l/015
`l/016~l/031
`CLK
`
`TE
`
`L-VCC
`L-VSS
`
`FAR INT CT REF
`
`IOCON
`
`BUF
`
`REU
`
`REG
`
`TDBUF
`
`FCUN
`
`RB
`
`RESET
`
`S-VCC
`S-VSS
`
`D-VCC
`D-VSS
`D-VCCl]
`D-VSSD
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 4
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 3 0f 29
`
`US 7,136,978 B2
`
`SDRAM
`
`D’zPR
`
`,
`
`BANKS
`
`cP‘Ama’V
`
`rADauto
`nADau?tog
`
`,.
`
`------------ -- ,
`Auto download
`
`Load/Store
`[124575
`r24575’
`
`5
`
`FLASH
`
`F-IPR
`
`2
`
`A/ILMD
`
`/|11 0240
`g/rl [124E]
`
`BANK2
`
`Load/Store
`
`CP—Areaf\/
`
`----------- "41g
`________________________ __
`5
`F4/
`
`F-REP 5123153
`
`BANK1
`
`WK—Area/\/
`
`WK—Area/V
`BANKI]
`
`REG
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 5
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 4 0f 29
`
`US 7,136,978 B2
`
`FIG.4
`
`2T S TR
`
`
`
`3| TN
`
`T
`
`D
`
`D “L A
`
`
`
` N 5E TR S
`
`S
`
`X _IE
`TR S
`
`BE
`TD
`
`I\ll
`
`1
`
`0 TP
`
`N
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 6
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 5 0f 29
`
`US 7,136,978 B2
`
`FIG.5
`
`D'N'T
`
`RST
`
`STEP1
`ABP
`
`STEP2
`AREF
`
`STEP1]
`MRSET
`
`BL
`H d
`CL=2
`
`ALD
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 7
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 6 0f 29
`
`US 7,136,978 B2
`
`FIG.6
`
`RST
`
`STEP]
`ABP
`
`STEPZ
`AREF
`
`DINIT
`
`STEP3
`MRSET
`
`BL=1
`CL=Z
`
`STEP4
`EMRSET
`
`Ret=Al l hanks
`Temn=B5°C
`Drv=Normal
`
`ALD
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 8
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 7 0f 29
`
`US 7,136,978 B2
`
`ALD
`
`225:3‘
`
`FROM
`FLASH
`
`STEP4
`READ FROM FLASH
`
`STEPZ
`ERROR
`
`YES
`
`N0
`
`STEP3
`ERROR
`CORRECTION
`I
`
`STEPS
`ERROR CORRECTION
`N0
`<—1
`
`_>
`
`$TEP7
`WRITE T0 SRAM
`
`STEPS
`REFRESH
`
`STEP1 I]
`WRITE T0 SDRAM
`
`STEPH
`INISHI
`
`YES
`
`STEPI 2
`lNlSH
`
`YES
`STEP13
`WRITE T0 REG
`\II
`STEP14
`SELF REF ENTRY
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 9
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 8 0f 29
`
`US 7,136,978 B2
`
`FIG.8
`
`e
`
`NO
`
`STEP1
`AUTO REF
`
`l
`
`STEPZ
`SEL REF
`
`STEP3
`SEL REF
`EXIT
`
`YES
`
`.
`STEP4
`SELF REF EXIT
`
`i
`
`STEPS
`CHG REF
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 10
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 9 0f 29
`
`US 7,136,978 B2
`
`F I G . 9
`
`STEP1
`LOAD & ADDRESS
`&
`STEPZ
`READ FROM FLASH
`
`STEP4
`ERROR CORRECTION
`NU
`e—___l
`
`STEPS
`WRITE To SRAM
`
`STEP7
`COMMAND EXEC
`& COMPLETE
`
`STEPH
`WRITE TD SDRAM
`
`STEP14
`WRITE TD REG
`___|
`
`STEPH
`PA‘JSE
`STEP12
`comma EXEC
`
`YES
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 11
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 10 0f 29
`
`US 7,136,978 B2
`
`FIG.1O
`
`STEP'1
`STORE & ADDRESS
`
`1 STEP 0
`
`WRITE Tl] SRAM
`
`STEPH
`WRITE TO FLASH
`
`STEP13
`ADDRESS
`REPLACE
`
`YES
`
`STEP5
`READ FRPM SDRAM
`
`STEPB
`COMMAND
`FROM CPU
`
`STEP7
`PAUSE
`W
`STEPB
`COMMAND EXEC
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 12
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 11 0f 29
`
`US 7,136,978 B2
`
`STEP1
`IDLE
`
`STEPZ
`ACTIVE &
`RDw ADDRESS
`
`$TEP3
`2[DYD|_E]
`ma»- ACTIVE &
`RDw ADDRESS
`
`STEP4
`READNRITE 2 [CYCLE]
`s. COLUMN
`5
`ADDRESS
`
`STEPS
`READ/WRITE
`a. COLUMN
`ADDRESS
`
`STEPB
`PRE &
`BANK ADDRESS
`
`STEP7
`2[CYCLE]
`——> PRE &
`BANK ADDRESS
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 13
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 12 0f 29
`
`US 7,136,978 B2
`
`FIG.12A
`
`STEP]
`IDLE
`i
`STEPZ
`CHCY &
`ADDRESS
`
`STEP3
`CHCY EXE
`___J
`
`FIG.‘|2B
`
`EXTERNAL
`CLK Wm
`
`n2
`_ 02-0015
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 14
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 13 0f 29
`
`mmEQc
`)LEEHE
`
`25E
`
`viola
`
`US 7,136,978 B2
`
`Essa 58E 3
`
`llllalmzwa@IIEEEEEIIEIEII-QUUUUUUUUU
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 15
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`
`
`._. Izzy-utm
`
`Sheet 14 0f 29
`
`US 7,136,978 B2
`
`""nw'awawgmw"
`
`E?EMT?IEII-VUUUUUUUUU =85
`
`gab-ma
`@5252
`
`
`
`llll?la?aéllaaaaéll?lalI-CUUUUUUUUU “25
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 16
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 17
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 18
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 17 0f 29
`
`US 7,136,978 B2
`
`FIG.17
`
`STEP1
`IDLE
`
`STEPZ
`MRSET
`
`STEP3
`CTSET
`
`_
`BL-4, B. 16, FP
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 19
`
`

`
`U.S. Patent
`
`Nov. 14, 2006
`
`Sheet 18 0f 29
`
`US 7,136,978 B2
`
`F I G . 1 8
`
`EXTERNAL
`
`CLK
`
`CUM
`
`AU~A15
`IUU~
`I015
`
`DRAM
`_D—CLK
`D-CUM
`“$1155 nnnmiimmmmmmmmmlilli
`D1—DUU~
`01-001 5
`D2-nun~
`DZ-DO15
`
`00 mmmmmmm
`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 20
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 21
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 22
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 23
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 24
`
`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 25
`
`

`
`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 26
`
`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 27
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 28
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 29
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 30
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 31
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 32
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 33
`
`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 34
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 35
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 36
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 37
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 38
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 39
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 40
`
`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 41
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 42
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 43
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 44
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 45
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 46
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`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 47
`
`

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`Petitioners SK hynix Inc., SK hynix America Inc. and SK hynix memory solutions Inc.
`Ex. 1018, p. 48