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SEU02G64B4BF2SA-30R Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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SEU02G64B4BF2SA-30R Datasheet(HTML) 10 Page - List of Unclassifed Manufacturers |
10 / 16 page preliminary Data Sheet Rev.0.9 17.12.2012 Swissbit AG Industiestrasse 4 Fon: +41 (0) 71 913 03 03 www.swissbit.com Page 10 CH-9552 Bronschhofen Fax: +41 (0) 71 913 03 15 eMail: info@swissbit.com of 16 DDR2 SDRAM COMPONENT ELECTRICAL CHARACTERISTICS AND RECOMMENDED AC OPERATING CONDITIONS (Continued) (0°C ≤ TCASE ≤ + 85°C ; VDDQ = +1.8V ± 0.1V, VDD = +1.8V ± 0.1V) AC CHARACTERISTICS 6400-6-6-6 5300-5-5-5 PARAMETER SYMBOL MIN MAX MIN MAX Unit Address and control input hold time tIH 0.25 - 0.275 - ns CAS# to CAS# command delay tCCD 2 - 2 - tCK ACTIVE to ACTIVE (same bank) command period tRC 60 - 60 - ns ACTIVE bank a to ACTIVE bank b command tRRD 7.5 - 7.5 - ns ACTIVE to READ or WRITE delay tRCD 15 - 15 - ns Four bank Activate period tFAW 37.5 - 37.5 - ns ACTIVE to PRECHARGE command tRAS 45 70 ’000 45 70 ’000 ns Internal READ to precharge command delay tRTP 7.5 - 7.5 - ns Write recovery time tWR 15 - 15 - ns Auto precharge write recovery + precharge time tDAL tWR + tRP - tWR + tRP - ns Internal WRITE to READ command delay tWTR 7.5 - 7.5 - ns PRECHARGE command period tRP 15 - 15 - ns PRECHARGE ALL command period tRPA tRP + tCK - tRP + tCK - ns LOAD MODE command cycle time tMRD 2 - 2 - tCK CKE low to CK, CK# uncertainty tDELAY tIS + tCK + tIH tIS + tCK + tIH tCK REFRESH to ACTIVE or REFRESH to REFRESH command interval tRFC 127.5 70 ’000 127.5 70 ’000 ns Average periodic refresh interval 0 °C ≤ TCASE ≤ 85°C tREFI - 7.8 - 7.8 µs 85 °C < TCASE ≤ 95°C 3.9 3.9 Exit SELF REFRESH to non- READ command tXSNR tRFC(min) + 10 - tRFC(min) + 10 - ns Exit SELF REFRESH to READ command tXSRD 200 - 200 - tCK Exit SELF REFRESH timing reference tISXR tIS - tIS - ps ODT turn-on delay tAOND 2 2 2 2 tCK ODT turn-on tAON tAC(min) tAC(max) + 1,000 tAC(min) tAC(max) + 1,000 ps ODT turn-off delay tAOFD 2.5 2.5 2.5 2.5 tCK ODT turn-off tAOF tAC(min) tAC(max) + 600 tAC(min) tAC(max) + 600 ps ODT turn-on (power-down mode) tAONPD tAC(min) + 2,000 2 x tCK + tAC(max) + 1,000 tAC(min) + 2,000 2 x tCK + tAC(max) + 1,000 ps ODT turn-off (power-down mode) tAOFPD tAC(min) + 2,000 2.5 x tCK + tAC(max) + 1,000 tAC(min) + 2,000 2.5 x tCK + tAC(max) + 1,000 ps ODT to power-down entry latency tANPD 3 - 3 - tCK |
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