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CXK79M72C165GB Datasheet(PDF) 6 Page - Sony Corporation |
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CXK79M72C165GB Datasheet(HTML) 6 Page - Sony Corporation |
6 / 29 page SONY® ΣRAM CXK79M72C165GB / CXK79M36C165GB Preliminary 18Mb 1x1Dp, LVCMOS, rev 1.3 6 / 29 November 18, 2003 Clock Truth Table Notes: 1. “1” = input “high”; “0” = input “low”; “X” = input “don’t care”; “T” = input “true”; “F” = input “false”. 2. “***” indicates that the DQ input requirement or output state and the CQ output state are determined by the previous operation. 3. “---” indicates that the DQ input requirement or output state and the CQ output state are determined by the next operation. 4. If E2 = EP2 and E3 = EP3 then E = “T” else E = “F”. 5. If one or more Bx = 0 then B = “T” else B = “F”. 6. DQs are tri-stated in response to Bank Deselect, Deselect, and Write commands, one full cycle after the command is sampled. 7. CQs are tri-stated in response to Bank Deselect commands only, one full cycle after the command is sampled. 8. Up to three (3) Continue operations may be initiated after a Read or Write operation is initiated to burst transfer up to four (4) distinct pieces of data per single external address input. If a fourth (4th) Continue operation is initiated, the internal ad- dress wraps back to the initial external (base) address. CK E1 (tn) E (tn) ADV (tn) W (tn) B (tn) Previous Operation Current Operation DQ/CQ (tn) DQ/CQ (tn+1) DQ/CQ (tn+2) ↑ X F 0 X X X Bank Deselect *** Hi-Z --- ↑ X X 1 X X Bank Deselect Bank Deselect (Continue) Hi-Z Hi-Z --- ↑ 1 T 0 X X X Deselect *** Hi-Z/CQ --- ↑ X X 1 X X Deselect Deselect (Continue) Hi-Z/CQ Hi-Z/CQ --- ↑ 0T 0 0 T X Write Loads new address Stores DQx if Bx = 0 *** Hi-Z/CQ D1/--- ↑ 0T 0 0 F X Write (Abort) Loads new address No data stored *** Hi-Z/CQ X/--- ↑ X X 1 X T Write Write Continue Increments address by 1 Stores DQx if Bx = 0 Hi-Z/CQ D1/CQ D2/--- ↑ X X 1 X F Write Write Continue (Abort) Increments address by 1 No data stored Hi-Z/CQ D1/CQ X/--- ↑ 0T 0 1 X X Read Loads new address *** Q1/CQ --- ↑ X X 1 X X Read Read Continue Increments address by 1 Q1/CQ Q2/CQ --- |
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