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SEN01G64D1BF1SA-25R Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers |
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10 / 14 page Data Sheet Rev.1.2 12.12.2010 Swissbit AG Industriestrasse 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 14 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 5300-555 6400-666 Unit PARAMETER SYMBOL MIN MAX MIN MAX Address and control input setup time tIS(base) 0.20 0.175 ns Address and control input hold time tIH(base) 0.275 0.250 ns CAS# to CAS# command delay tCCD 2 2 tCK ACTIVE to ACTIVE (same bank) command period tRC 55 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 127 127 ns Average periodic refresh interval (0°C<TC>85°C) tREFI - 7.8 - 7.8 µs Average periodic refresh interval (85°C<TC>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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