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HYMP31GP72CMP4-C4 Datasheet(PDF) 24 Page - Hynix Semiconductor |
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HYMP31GP72CMP4-C4 Datasheet(HTML) 24 Page - Hynix Semiconductor |
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24 / 32 page  Rev. 0.7 / Jun. 2009 25 1 240pin Registered DDR2 SDRAM DIMMs (DDR2-667 & DDR2-800) Parameter Symbol DDR2-667 DDR2-800 Unit Note min max min max DQ output access time from CK/CK tAC -450 +450 -400 +400 ps DQS output access time from CK/CK tDQSCK -400 +400 -350 +350 ps CK high-level width tCH 0.45 0.55 0.45 0.55 tCK CK low-level width tCL 0.45 0.55 0.45 0.55 tCK CK half period tHP min(tCL, tCH) - min(tCL, tCH) - ps Clock cycle time, CL=x tCK 3000 8000 2500 ps DQ and DM input setup time (differential strobe) tDS 100 - 50 - ps 1 DQ and DM input hold time (differential strobe) tDH 175 - 125 - ps 1 Control & Address input pulse width for each input tIPW 0.6 - 0.6 - tCK DQ and DM input pulse width for each input tDIPW 0.35 - 0.35 - tCK Data-out high-impedance time from CK/CK tHZ - tAC max - tAC max ps DQS low-impedance time from CK/CK tLZ(DQS) tAC min tAC max tAC min tAC max ps DQ low-impedance time from CK/CK tLZ(DQ) 2*tAC min tAC max 2*tAC min tAC max ps DQS-DQ skew for DQS and associated DQ signals tDQSQ - 240 -200 ps DQ hold skew factor tQHS - 340 -300 ps DQ/DQS output hold time from DQS tQH tHP - tQHS - tHP - tQHS - ps First DQS latching transition to associated clock edge tDQSS - 0.25 + 0.25 - 0.25 + 0.25 tCK DQS input high pulse width tDQSH 0.35 - 0.35 - tCK DQS input low pulse width tDQSL 0.35 - 0.35 - tCK DQS falling edge to CK setup time tDSS 0.2 - 0.2 - tCK DQS falling edge hold time from CK tDSH 0.2 - 0.2 - tCK Mode register set command cycle time tMRD 2 - 2 - tCK Write preamble tWPRE 0.35 - 0.35 - tCK Write postamble tWPST 0.4 0.6 0.4 0.6 tCK Auto-Refresh to Active/Auto-Refresh command period tRFC 127.5 - 127.5 - ns Row Active to Row Active Delay for 1KB page size tRRD 7.5-7.5- ns Address and control input setup time tIS 200 -175 - ps Address and control input hold time tIH 275 -250 - ps Read preamble tRPRE 0.9 1.1 0.9 1.1 tCK Read postamble tRPST 0.4 0.6 0.4 0.6 tCK Activate to precharge command tRAS 45 70000 45 70000 ns Active to active command period for 1KB page size products tRRD 7.5 -7.5 - ns Row Active to Row Active Delay for 2KB page size tRRD 10 - 10 - ns Four Active Window for 1KB page size products tFAW 37.5 - 35 - ns Four Activate Window for 2KB page size tFAW 50 - 50 - ns CAS to CAS command delay tCCD 2 2 tCK Write recovery time tWR 15 -15 - ns Auto precharge write recovery + precharge time tDAL WR+tRP - WR+tRP - tCK Internal write to read command delay tWTR 7.5 -7.5 - ns Internal read to precharge command delay tRTP 7.5 7.5 ns |
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