Electronic Components Datasheet Search |
|
W3EG7218S-AD4 Datasheet(PDF) 8 Page - White Electronic Designs Corporation |
|
W3EG7218S-AD4 Datasheet(HTML) 8 Page - White Electronic Designs Corporation |
8 / 13 page 8 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs November 2004 Rev. 1 PRELIMINARY W3EG7218S-AD4 -BD4 ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS (continued) AC CHARACTERISTICS 262 265/202 UNITS NOTES PARAMETER SYMBOL MIN MAX MIN MAX DQ-DQS hold, DQS to first DQ to go non-valid, per access tQH tHP - tQHS tHP - tQHS ns 22, 23 Data Hold Skew Factor tQHS 0.75 0.75 ns ACTIVE to PRECHARGE command tRAS 40 120,000 40 120,000 ns 31, 48 ACTIVE to READ with Auto precharge command tRAP 15 20 ns ACTIVE to ACTIVE/AUTO REFRESH command period tRC 60 65 ns AUTO REFRESH command period tRFC 75 75 ns 43 ACTIVE to READ or WRITE delay tRCD 15 20 ns PRECHARGE command period tRP 15 20 ns DQS read preamble tRPRE 0.9 1.1 0.9 1.1 tCK 38 DQS read postamble tRPST 0.4 0.6 0.4 0.6 tCK 38 ACTIVE bank a to ACTIVE bank b command tRRD 15 15 ns DQS write preamble tWPRE 0.25 0.25 tCK DQS write preamble setup time tWPRES 0 0 ns 18, 19 DQS write postamble tWPST 0.4 0.6 0.4 0.6 tCK 17 Write recovery time tWR 15 15 ns Internal WRITE to READ command delay tWTR 11 tCK Data valid output window (DVW) na tQH - tDQSQ tQH - tDQSQ ns 22 REFRESH to REFRESH command interval tREFC 140.6 140.6 µs 21 Average periodic refresh interval tREFI 15.6 15.6 µs 21 Terminating voltage delay to VDD tVTD 00 ns Exit SELF REFRESH to non-READ command tXSNR 75 75 ns Exit SELF REFRESH to READ command tXSRD 200 200 tCK |
Similar Part No. - W3EG7218S-AD4 |
|
Similar Description - W3EG7218S-AD4 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |