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HY5PS12421CFP-E3 Datasheet(PDF) 24 Page - Hynix Semiconductor |
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HY5PS12421CFP-E3 Datasheet(HTML) 24 Page - Hynix Semiconductor |
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24 / 38 page  Rev. 0.8 / Oct. 2007 24 1HY5PS12421C(L)FP 1HY5PS12821C(L)FP 1HY5PS121621C(L)FP Parameter Symbol DDR2-667 DDR2-800 Unit Note min max min max Four Active Window for 1KB page size products tFAW 37.5 - 37.5 - ns Four Active Window for 2KB page size products 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 14 Internal write to read command delay tWTR 7.5 -7.5 - ns Internal read to precharge command delay tRTP 7.5 7.5 ns 3 Exit self refresh to a non-read command tXSNR tRFC + 10 tRFC + 10 ns Exit self refresh to a read command tXSRD 200 - 200 - tCK Exit precharge power down to any non- read command tXP 2 - 2 - tCK Exit active power down to read command tXARD 2 2 tCK 1 Exit active power down to read command (Slow exit, Lower power) tXARDS 7 - AL 8 - AL tCK 1, 2 CKE minimum pulse width (high and low pulse width) tCKE 3 3 tCK ODT turn-on delay tAOND 22 2 2 tCK ODT turn-on tAON tAC(min) tAC(max) +0.7 tAC(min) tAC(max) +0.7 ns 6,16 ODT turn-on(Power-Down mode) tAONPD tAC(min)+2 2tCK+ tAC(max)+1 tAC(min) +2 2tCK+ tAC(max)+1 ns ODT turn-off delay tAOFD 2.5 2.5 2.5 2.5 tCK ODT turn-off tAOF tAC(min) tAC(max)+ 0.6 tAC(min) tAC(max) +0.6 ns 17 ODT turn-off (Power-Down mode) tAOFPD tAC(min) +2 2.5tCK+ tAC(max)+1 tAC(min) +2 2.5tCK+ tAC(max)+1 ns ODT to power down entry latency tANPD 3 3 tCK ODT power down exit latency tAXPD 8 8 tCK OCD drive mode output delay tOIT 0 12 0 12 ns Minimum time clocks remains ON after CKE asynchronously drops LOW tDelay tIS+tCK+tI H tIS+tCK +tIH ns 15 -Continue- |
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