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GPR323A16A डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Synchronous DRAM - Generalplus

भाग संख्या GPR323A16A
समारोह Synchronous DRAM
मैन्युफैक्चरर्स Generalplus 
लोगो Generalplus लोगो 
पूर्व दर्शन
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GPR323A16A pdf
GPR323A16A
Table of Contents
PAGE
1. GENERAL DESCRIPTION .......................................................................................................................................................................... 4
2. FEATURES .................................................................................................................................................................................................. 4
3. BLOCK DIAGRAM ...................................................................................................................................................................................... 5
4. SIGNAL DESCRIPTIONS............................................................................................................................................................................ 6
4.1. KEY SPECIFICATIONS ............................................................................................................................................................................. 7
4.2. PIN ASSIGNMENT (TOP VIEW)................................................................................................................................................................. 7
5. FUNCTIONAL DESCRIPTIONS.................................................................................................................................................................. 8
5.1. OPERATION MODE ................................................................................................................................................................................. 8
5.2. COMMANDS ........................................................................................................................................................................................... 8
6. ELECTRICAL SPECIFICATIONS ............................................................................................................................................................. 18
6.1. ABSOLUTE MAXIMUM RATING ............................................................................................................................................................... 18
6.2. RECOMMENDED D.C. OPERATING CONDITIONS (TA = 0~70°C) .............................................................................................................. 18
6.3. CAPACITANCE (VDD = 3.3V, F = 1MHZ, TA = 25°C) .............................................................................................................................. 18
6.4. RECOMMENDED D.C. OPERATING CONDITIONS (VDD = 3.3V ± 0.3V, TA = 0~70°C)............................................................................... 18
6.5. ELECTRICAL CHARACTERISTICS AND RECOMMENDED A.C. OPERATING CONDITIONS .............................................................................. 19
7. TIMING WAVEFORMS .............................................................................................................................................................................. 21
7.1. AC PARAMETERS FOR WRITE TIMING (BURST LENGTH=4)..................................................................................................................... 21
7.2. AC PARAMETERS FOR READ TIMING (BURST LENGTH=2, CAS# LATENCY=2) ........................................................................................ 22
7.3. AUTO REFRESH (CBR) (BURST LENGTH=4, CAS# LATENCY=2)............................................................................................................ 23
7.4. POWER ON SEQUENCE AND AUTO REFRESH (CBR) .............................................................................................................................. 23
7.5. SELF REFRESH ENTRY & EXIT CYCLE................................................................................................................................................... 24
7.6. CLOCK SUSPENSION DURING BURST READ (USING CKE)...................................................................................................................... 25
7.7. CLOCK SUSPENSION DURING BURST WRITE (USING CKE) .................................................................................................................... 26
7.8. POWER DOWN MODE AND CLOCK MASK (BURST LENGTH=4, CAS# LATENCY=2) .................................................................................. 27
7.9. RANDOM COLUMN READ (PAGE WITHIN SAME BANK) ............................................................................................................................. 28
7.10.RANDOM COLUMN WRITE (PAGE WITHIN SAME BANK) ........................................................................................................................... 29
7.11. RANDOM ROW READ (INTERLEAVING BANKS)........................................................................................................................................ 30
7.12.RANDOM ROW WRITE (INTERLEAVING BANKS) ...................................................................................................................................... 31
7.13.READ AND WRITE CYCLE ..................................................................................................................................................................... 32
7.14.INTERLEAVING COLUMN READ CYCLE ................................................................................................................................................... 33
7.15.INTERLEAVED COLUMN WRITE CYCLE................................................................................................................................................... 34
7.16.AUTO PRECHARGE AFTER READ BURST................................................................................................................................................ 35
7.17.AUTO PRECHARGE AFTER WRITE BURST .............................................................................................................................................. 36
7.18.FULL PAGE READ CYCLE...................................................................................................................................................................... 37
7.19.FULL PAGE WRITE CYCLE .................................................................................................................................................................... 38
7.20.BYTE WRITE OPERATION (BURST LENGTH=4)....................................................................................................................................... 39
7.21.RANDOM ROW READ (INTERLEAVING BANKS) (BURST LENGTH=2, CAS# LATENCY=2) ........................................................................... 40
7.22.FULL PAGE RANDOM COLUMN READ (BURST LENGTH=FULL PAGE, CAS# LATENCY=2) ......................................................................... 41
7.23.FULL PAGE RANDOM COLUMN WRITE (BURST LENGTH=FULL PAGE, CAS# LATENCY=2) ........................................................................ 42
7.24.FIGURE 24. PRECHARGE TERMINATION OF A BURST (BURST LENGTH=4, 8 OR FULL PAGE, CAS# LATENCY=3) ..................................... 43
© Generalplus Technology Inc.
Proprietary & Confidential
2
Dec. 5, 2008
Version: 1.0

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