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GPR323816A डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Synchronous DRAM - Generalplus

भाग संख्या GPR323816A
समारोह Synchronous DRAM
मैन्युफैक्चरर्स Generalplus 
लोगो Generalplus लोगो 
पूर्व दर्शन
1 Page
		
<?=GPR323816A?> डेटा पत्रक पीडीएफ

GPR323816A pdf
GPR323816A
Table of Contents
PAGE
1. GENERAL DESCRIPTION .......................................................................................................................................................................... 4
2. FEATURES .................................................................................................................................................................................................. 4
3. BLOCK DIAGRAM ...................................................................................................................................................................................... 5
4. PIN DESCRIPTIONS ................................................................................................................................................................................... 6
4.1. PIN ASSIGNMENT (TSOP II TOP VIEW).................................................................................................................................................... 7
5. OPERATION MODE .................................................................................................................................................................................... 8
6. COMMANDS ............................................................................................................................................................................................... 9
6.1. BANKACTIVATE (RAS# = "L", CAS# = "H", WE# = "H", BSS = BANK, A0-A11 = ROW ADDRESS).............................................................. 9
6.2. BANKPRECHARGE COMMAND(RAS# = "L", CAS# = "H", WE# = "L", BSS = BANK, A10 = "L", A0-A9 AND A11 = DON'T CARE) .................. 9
6.3. PRECHARGEALL COMMAND (RAS# = "L", CAS# = "H", WE# = "L", BSS = DONT CARE, A10 = "H", A0-A9 AND A11 = DON'T CARE).......... 9
6.4. READ COMMAND (RAS# = "H", CAS# = "L", WE# = "H", BSS = BANK, A10 = "L", A0-A7 = COLUMN ADDRESS) ....................................... 9
6.5. READ AND AUTOPRECHARGE COMMAND (RAS# = "H", CAS# = "L", WE# = "H", BSS = BANK, A10 = "H", A0-A7 = COLUMN ADDRESS) .. 10
6.6. 6 WRITE COMMAND (RAS# = "H", CAS# = "L", WE# = "L", BSS = BANK, A10 = "L", A0-A7 = COLUMN ADDRESS) .................................. 10
6.7. WRITE AND AUTOPRECHARGE COMMAND (RAS# = "H", CAS# = "L", WE# = "L", BSS = BANK, A10 = "H", A0-A7 = COLUMN ADDRESS) ..11
6.8. MODE REGISTER SET COMMAND (RAS# = "L", CAS# = "L", WE# = "L", A0-A11 = REGISTER DATA) .......................................................11
6.9. NO-OPERATION COMMAND(RAS# = "H", CAS# = "H", WE# = "H") ....................................................................................................... 13
6.10.BURST STOP COMMAND (RAS# = "H", CAS# = "H", WE# = "L") ........................................................................................................... 13
6.11. DEVICE DESELECT COMMAND (CS# = "H") ........................................................................................................................................... 13
6.12.AUTOREFRESH COMMAND (RAS# = "L", CAS# = "L", WE# = "H", CKE = "H", A11 = “DONT CARE, A0-A9 = DON'T CARE)...................... 13
6.13.SELFREFRESH ENTRY COMMAND(RAS# = "L", CAS# = "L", WE# = "H", CKE = "L", A0-A9 = DON'T CARE) ........................................... 13
6.14.SELFREFRESH EXIT COMMAND ............................................................................................................................................................ 13
6.15.CLOCK SUSPEND MODE ENTRY / POWERDOWN MODE ENTRY COMMAND (CKE = "L") ........................................................................... 13
6.16.CLOCK SUSPEND MODE EXIT / POWERDOWN MODE EXIT COMMAND (CKE= "H") .................................................................................. 14
6.17.DATA WRITE / OUTPUT ENABLE, DATA MASK / OUTPUT DISABLE COMMAND (DQM = "L", "H") ................................................................. 14
7. ELECTRICAL SPECIFICATIONS ............................................................................................................................................................. 15
7.1. ABSOLUTE MAXIMUM RATING ............................................................................................................................................................... 15
7.2. RECOMMENDED D.C. OPERATING CONDITIONS (TA = - 0~70) ............................................................................................................ 15
7.3. CAPACITANCE (VDD = 3.3V, F = 1MHZ, TA = 25) .............................................................................................................................. 15
7.4. RECOMMENDED D.C. OPERATING CONDITIONS (VDD = 3.3V ± 0.3V, TA = 0~70)............................................................................... 15
7.5. ELECTRICAL CHARACTERISTICS AND RECOMMENDED A.C. OPERATING CONDITIONS (VDD = 3.3V±0.3V, TA = 0~70°C) (NOTE: 5, 6, 7, 8)16
8. TIMING WAVEFORMS .............................................................................................................................................................................. 18
8.1. AC PARAMETERS FOR WRITE TIMING (BURST LENGTH=4)..................................................................................................................... 18
8.2. AC PARAMETERS FOR READ TIMING (BURST LENGTH=2, CAS# LATENCY=2) ........................................................................................ 19
8.3. AUTO REFRESH (CBR) (BURST LENGTH=4, CAS# LATENCY=2)............................................................................................................ 20
8.4. POWER ON SEQUENCE AND AUTO REFRESH (CBR) .............................................................................................................................. 21
8.5. SELF REFRESH ENTRY & EXIT CYCLE................................................................................................................................................... 22
8.6. CLOCK SUSPENSION DURING BURST READ (USING CKE) ..................................................................................................................... 23
8.7. CLOCK SUSPENSION DURING BURST WRITE (USING CKE).................................................................................................................... 25
8.8. POWER DOWN MODE AND CLOCK MASK (BURST LENGTH=4, CAS# LATENCY=2) .................................................................................. 27
8.9. RANDOM COLUMN READ (PAGE WITHIN SAME BANK) ............................................................................................................................. 28
8.10.RANDOM COLUMN WRITE (PAGE WITHIN SAME BANK) ........................................................................................................................... 30
8.11. RANDOM ROW READ (INTERLEAVING BANKS)........................................................................................................................................ 32
© Generalplus Technology Inc.
Proprietary & Confidential
2
OCT. 08, 2008
Version: 1.0

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