JP4238163B2 - 半導体集積回路装置 - Google Patents
半導体集積回路装置 Download PDFInfo
- Publication number
- JP4238163B2 JP4238163B2 JP2004074415A JP2004074415A JP4238163B2 JP 4238163 B2 JP4238163 B2 JP 4238163B2 JP 2004074415 A JP2004074415 A JP 2004074415A JP 2004074415 A JP2004074415 A JP 2004074415A JP 4238163 B2 JP4238163 B2 JP 4238163B2
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- JP
- Japan
- Prior art keywords
- sram
- data
- dram
- memory
- memory block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/41—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/413—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing, timing or power reduction
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/41—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger
- G11C11/412—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming static cells with positive feedback, i.e. cells not needing refreshing or charge regeneration, e.g. bistable multivibrator or Schmitt trigger using field-effect transistors only
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1051—Data output circuits, e.g. read-out amplifiers, data output buffers, data output registers, data output level conversion circuits
- G11C7/1066—Output synchronization
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/10—Input/output [I/O] data interface arrangements, e.g. I/O data control circuits, I/O data buffers
- G11C7/1078—Data input circuits, e.g. write amplifiers, data input buffers, data input registers, data input level conversion circuits
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2207/00—Indexing scheme relating to arrangements for writing information into, or reading information out from, a digital store
- G11C2207/10—Aspects relating to interfaces of memory device to external buses
- G11C2207/107—Serial-parallel conversion of data or prefetch
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Dram (AREA)
- Static Random-Access Memory (AREA)
Description
Hideo Ohwada他6名 ‘A single-Chip Band-Segmented-Transmission OFDM Demodulator for Digital Terrestrial Television Broadcasting’ 2001 IEEE International Solid-State Circuits Conference 東芝セミコンダクター社 ‘DRAM混載技術’ [平成15年9月25日検索]、インターネット <http://www.semicon.toshiba.co.jp/prd/asic/index.html>
まず時間Aにおいて、システムクロックに同期して、論理回路11,12からシリアル/パラレル変換回路21,22に、それぞれ20ビットデータD1A,D2Aが転送される。同様に、時間Bにおいて20ビットデータD1B,D2Bが、そして時間Cにおいて20ビットデータD1C,D2Cが、論理回路11,12からシリアル/パラレル変換回路21,22に、それぞれ転送される。
時間Dにおいて、アクセス回路20はREADコマンドによって、メモリブロック14にデータDSP1Cの読み出しを指示する。またアクセス回路20は、次のクロックサイクルである時間Mにおいて、READコマンドによって、メモリブロック14にデータDSP2Cの読み出しを指示する。
14 メモリブロック
15a,15b DRAM
16 SRAM
25 データ出力用レジスタ
Claims (3)
- 複数の論理回路と、
前記複数の論理回路からアクセス可能なメモリブロックと、
前記複数の論理回路から指示を受け、時分割処理によって、前記メモリブロックをアクセスするアクセス回路とを備え、
前記メモリブロックは、
少なくとも1つのDRAMと、少なくとも1つのSRAMとを有し、アドレスの全部または一部について、データのビットの一部が前記DRAMに格納されるとともに、残部が前記SRAMに格納されるように、構成されており、かつ、
前記SRAMの出力側に設けられ、前記SRAMからのデータ出力タイミングを、前記DRAMからのデータ出力タイミングに合わせるためのデータ出力用レジスタを備えており、
前記メモリブロックの動作クロックは、前記論理回路の動作クロックよりも、高い周波数に設定されている
ことを特徴とする半導体集積回路装置。 - 請求項1において、
前記DRAMは、アドレス指定方式が前記SRAMと共通なように、構成されている
ことを特徴とする半導体集積回路装置。 - 請求項1において、
前記DRAMは、コマンド入力方式が前記SRAMと共通なように、構成されている
ことを特徴とする半導体集積回路装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004074415A JP4238163B2 (ja) | 2004-03-16 | 2004-03-16 | 半導体集積回路装置 |
US11/075,739 US7057968B2 (en) | 2004-03-16 | 2005-03-10 | Semiconductor integrated circuit device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004074415A JP4238163B2 (ja) | 2004-03-16 | 2004-03-16 | 半導体集積回路装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005267678A JP2005267678A (ja) | 2005-09-29 |
JP4238163B2 true JP4238163B2 (ja) | 2009-03-11 |
Family
ID=34986116
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004074415A Expired - Fee Related JP4238163B2 (ja) | 2004-03-16 | 2004-03-16 | 半導体集積回路装置 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7057968B2 (ja) |
JP (1) | JP4238163B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005259267A (ja) * | 2004-03-11 | 2005-09-22 | Matsushita Electric Ind Co Ltd | 半導体集積回路装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2940457B2 (ja) * | 1996-01-23 | 1999-08-25 | 日本電気株式会社 | 半導体メモリ |
CA2340804A1 (en) | 2001-03-14 | 2002-09-14 | Atmos Corporation | Sram emulator |
-
2004
- 2004-03-16 JP JP2004074415A patent/JP4238163B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-10 US US11/075,739 patent/US7057968B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US7057968B2 (en) | 2006-06-06 |
US20050207266A1 (en) | 2005-09-22 |
JP2005267678A (ja) | 2005-09-29 |
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