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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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VG36128401A Scheda tecnica(PDF) 10 Page - Vanguard International Semiconductor |
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VG36128401A Scheda tecnica(HTML) 10 Page - Vanguard International Semiconductor |
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10 / 69 page  Document : 1G5-0154 Rev.1 Page 10 VIS VG36128401A Preliminary VG36128801A VG36128161A CMOS Synchronous Dynamic RAM 2.4 Operative Command Table Notes 1 Current state CS RAS CAS WE Address Command Action Notes Idle H X X X X DESL Nop or Power down 2 L H H X X NOP or BST Nop or Power down 2 L H L H BA, CA, A10 READ/READA ILLEGAL 3 L H L L BA, CA, A10 WRIT/WRITA ILLEGAL 3 L L H H BR, RA ACT Row active L L H L BA, A10 PRE/PALL Nop L L L H X REF/SELF Refresh or Self refresh 4 L L L L Op - Code MPS Mode register access Row active H X X X X DESL Nop L H H X X NOP or BST Nop L H L H BA, CA, A10 READ/READA Begin read : Determine AP 5 L H L L BA, CA, A10 WRIT/WRITA Begin write : Determine AP 5 L L H H BA, RA ACT ILLEGAL 3 L L H L BA, A10 PRE/PALL Precharge 6 L L L H X REF/SELF ILLEGAL L L L L Op - Code MRS ILLEGAL Read H X X X X DESL Continue burst to end Row active L H H H X NOP Continue burst to end Row active L H H L X BST Burst end Row active L H L H BA, CA, A10 READ/READA Term burst, new read : Determine AP 7 L H L L BA, CA, A10 WRIT/WRITA Term burst, start write : Determine AP 7,8 L L H H BA, RA ACT ILLEGAL 3 L L H L BA, A10 PRE/PALL Term burst, precharging L L L H X REF/SELF ILLEGAL L L L L Op - Code MRS ILLEGAL Write H X X X X DESL Continue burst to end Write recovering L H H H X NOP Continue burst to end Write recovering L H H L X BST Burst stop Row active L H L H BA, CA, A10 READ/READA Term burst, start read : determine AP 7,8 L H L L BA, CA, A10 WRIT/WRITA Term burst, new write : Determine AP 7 L L H H BA, RA ACT ILLEGAL 3 L L H L BA, A10 PRE/PALL Term burst, precharging 9 L L L H X REF/SELF ILLEGAL L L L L Op - Code MRS ILLEGAL → → → → → → (1/3) |
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