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W971GG6JB25I Datasheet(PDF) 46 Page - Winbond |
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W971GG6JB25I Datasheet(HTML) 46 Page - Winbond |
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46 / 87 page  W971GG6JB Publication Release Date: Nov. 18, 2011 - 46 - Revision A08 AC Characteristics and Operating Condition for -25/25L/25I/25A/25K/-3 speed grades, continued Notes: 1-3 and 45-47 apply to the entire table SYM. SPEED GRADE DDR2-800 ( -25/25L/25I/25A/25K) DDR2-667 ( -3) UNITS 25 NOTES Bin(CL-tRCD-tRP) 5-5-5 5-5-5 PARAMETER MIN. MAX. MIN. MAX. tWPRE Write preamble 0.35 0.35 tCK(avg) tWPST Write postamble 0.4 0.6 0.4 0.6 tCK(avg) 12 tRPRE Read preamble 0.9 1.1 0.9 1.1 tCK(avg) 14,36 tRPST Read postamble 0.4 0.6 0.4 0.6 tCK(avg) 14,37 tDS(base) DQ and DM input setup time 50 100 pS 16,27,29, 41,42,44 tDH(base) DQ and DM input hold time 125 175 pS 17,27,29, 41,42,44 tDS(ref) DQ and DM input setup time 250 300 pS 16,27,29, 41,42,44 tDH(ref) DQ and DM input hold time 250 300 pS 17,27,29, 41,42,44 tDIPW DQ and DM input pulse width for each input 0.35 0.35 tCK(avg) tHZ Data-out high-impedance time from CLK/ CLK tAC,max tAC,max pS 15,35 tLZ(DQS) DQS/ DQS -low-impedance time from CLK/ CLK tAC,min tAC,max tAC,min tAC,max pS 15,35 tLZ(DQ) DQ low-impedance time from CLK/ CLK 2 x tAC,min tAC,max 2 x tAC,min tAC,max pS 15,35 tHP Clock half pulse width Min. (tCH(abs), tCL(abs)) Min. (tCH(abs), tCL(abs)) pS 32 tQHS Data hold skew factor 300 340 pS 33 tQH DQ/DQS output hold time from DQS tHP - tQHS tHP - tQHS pS 34 tXSNR Exit Self Refresh to a non-Read command tRFC + 10 tRFC + 10 nS 23 tXSRD Exit Self Refresh to a Read command 200 200 nCK tXP Exit precharge power down to any command 2 2 nCK tXARD Exit active power down to Read command 2 2 nCK 18 tXARDS Exit active power down to Read command (slow exit, lower power) 8 - AL 7 - AL nCK 18,19 tAOND ODT turn-on delay 2 2 2 2 nCK 20 tAON ODT turn-on tAC,min tAC,max + 0.7 tAC,min tAC,max + 0.7 nS 20,35 tAONPD ODT turn-on (Power Down mode) tAC,min + 2 2 x tCK(avg) + tAC,max + 1 tAC,min + 2 2 x tCK(avg) + tAC,max + 1 nS tAOFD ODT turn-off delay 2.5 2.5 2.5 2.5 nCK 21,39 tAOF ODT turn-off tAC,min tAC,max + 0.6 tAC,min tAC,max + 0.6 nS 21,38,39 tAOFPD ODT turn-off (Power Down mode) tAC,min + 2 2.5 x tCK(avg) + tAC,max + 1 tAC,min + 2 2.5 x tCK(avg) + tAC,max + 1 nS tANPD ODT to power down Entry Latency 3 3 nCK tAXPD ODT Power Down Exit Latency 8 8 nCK tMRD Mode Register Set command cycle time 2 2 nCK tMOD MRS command to ODT update delay 0 12 0 12 nS 23 tOIT OCD Drive mode output delay 0 12 0 12 nS 23 tDELAY Minimum time clocks remain ON after CKE asynchronously drops LOW tIS+tCK(avg)+ tIH tIS+tCK(avg)+ tIH nS 22 |
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