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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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EM488M1644LBA-10F Fiches technique(PDF) 13 Page - Eorex Corporation |
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EM488M1644LBA-10F Fiches technique(HTML) 13 Page - Eorex Corporation |
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13 / 17 page  eorex EM488M1644LBA Jul. 2006 www.eorex.com 4. Operative Command Table (Note 7) Current State /CS /R /C /W Addr. Command Action H X X X X DESL Nop or power down (Note 8) L H H X X NOP or BST Nop or power down (Note 8) L H L H BA/CA/A10 READ/READA ILLEGAL (Note 9) L H L L BA/CA/A10 WRIT/WRITA ILLEGAL (Note 9) L L H H BA/RA ACT Row activating L L H L BA, A10 PRE/PALL Nop L L L H X REF/SELF Refresh or self refresh (Note 10) Idle L L L L Op-Code MRS Mode register accessing 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 (Note 11) L H L L BA/CA/A10 WRIT/WRITA Begin write: Determine AP (Note 11) L L H H BA/RA ACT ILLEGAL (Note 9) L L H L BA, A10 PRE/PALL Pre-charge (Note 12) L L L H X REF/SELF ILLEGAL (Note 10) Row Active L L L L Op-Code MRS ILLEGAL 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 stop → Row active L H L H BA/CA/A10 READ/READA Terminate burst, new read: Determine AP (Note 13) L L L L BA/CA/A10 WRIT/WRITA Terminate burst, start write: Determine AP (Note 13, 14) L L H H BA/RA ACT ILLEGAL (Note 9) L L H L BA, A10 PRE/PALL Terminate burst, pre-charging (Note 10) L L L H X REF/SELF ILLEGAL Read L L L L Op-Code MRS ILLEGAL 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 Terminate burst, start read: Determine AP 7, 8 (Note 13, 14) L L L L BA/CA/A10 WRIT/WRITA Terminate burst, new write: Determine AP 7 (Note 13) L L H H BA/RA ACT ILLEGAL (Note 9) L L H L BA, A10 PRE/PALL Terminate burst, pre-charging (Note 15) L L L H X REF/SELF ILLEGAL Write L L L L Op-Code MRS ILLEGAL Remark H = High level, L = Low level, X = High or Low level (Don't care) 13/17 |
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