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WEDPN16M64V-133B2C Datasheet(PDF) 11 Page - White Electronic Designs Corporation |
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WEDPN16M64V-133B2C Datasheet(HTML) 11 Page - White Electronic Designs Corporation |
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11 / 15 page  11 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WEDPN16M64V-XB2X January 2005 Rev. 1 ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CHARACTERISTICS (NOTES 5, 6, 8, 9, 11) Parameter Symbol -100 -125 -133 Unit Min Max Min Max Min Max Access time from CLK (pos. edge) (28) CL = 3 tAC (3) 7 6 5.5 ns CL = 2 tAC (2) 766 ns Address hold time tAH 1 1 0.8 ns Address setup time tAS 22 1.5 ns CLK high-level width tCH 33 2.5 ns CLK low-level width tCL 33 2.5 ns Clock cycle time (22) CL = 3 tCK (3) 10 8 7.5 ns CL = 2 tCK (2) 131010 ns CKE hold time tCKH 1 1 0.8 ns CKE setup time (30) tCKS 22 1.5 ns CS#, RAS#, CAS#, WE#, DQM hold time tCMH 1 1 0.8 ns CS#, RAS#, CAS#, WE#, DQM setup time tCMS 22 1.5 ns Data-in hold time tDH 1 1 0.8 ns Data-in setup time tDS 22 1.5 ns Data-out high-impedance time (10) CL = 3 (10) tHZ (3) 7 6 5.5 ns CL = 2 (10) tHZ (2) 7 6 6 ns Data-out low-impedance time tLZ 1 1 1 ns Data-out hold time (load) tOH 3 3 3 ns Data-out hold time (no load) (29) tOH N 1.8 1.8 1.8 ns ACTIVE to PRECHARGE command tRAS 50 120,000 50 120,000 50 120,000 ns ACTIVE to ACTIVE command period tRC 70 68 68 ns ACTIVE to READ or WRITE delay tRCD 20 20 20 ns Refresh period (8,192 rows) – Commercial, Industrial tREF 64 64 64 ms Refresh period (8,192 rows) – Military tREF 16 16 16 ms AUTO REFRESH period tRFC 70 70 70 ns PRECHARGE command period tRP 20 20 20 ns ACTIVE bank A to ACTIVE bank B command tRRD 20 20 20 ns Transition time (7) tT 0.3 1.2 0.3 1.2 0.3 1.2 ns WRITE recovery time (23) tWR 1 CLK + 7ns 1 CLK + 7ns 1 CLK + 7.5ns — (24) 15 15 15 ns Exit SELF REFRESH to ACTIVE command (20) tXSR 80 80 75 ns |
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