HYS72T64000HP Datasheet, PDF (18/49 Pages) Qimonda AG – 240-Pin Registered DDR2 SDRAM Modules

Internet Data Sheet
HYS72T[64/128/256]xx0HP–[3S/3.7]–A
Registered DDR2 SDRAM Modules
Speed Grade
DDR2–533C
Unit
Note
QAG Sort Name
–3.7
CAS-RCD-RP latencies
4–4–4
t_CK
Parameter
Symbol
Min.
Max.
—
RAS-CAS-Delay
t_RCD
15
—
ns
1)2)3)4)
Row Precharge Time
t_RP
15
—
ns
1)2)3)4)
1) Timings are guaranteed with CK/CK differential Slew Rate of 2.0 V/ns. For DQS signals timings are guaranteed with a differential Slew
Rate of 2.0 V/ns in differential strobe mode and a Slew Rate of 1 V/ns in single ended mode.Timings are further guaranteed for normal
OCD drive strength (EMRS(1) A1 = 0)
2) The CK/CK input reference level (for timing reference to CK/CK) is the point at which CK and CK cross. The DQS / DQS, RDQS / RDQS,
input reference level is the crosspoint when in differential strobe mode.
3) Inputs are not recognized as valid until V_REF stabilizes. During the period before V_REF stabilizes, CKE = 0.2 x V_DDQ is recognized as low.
4) The output timing reference voltage level is V_TT.
5) t_RAS.MAX is calculated from the maximum amount of time a DDR2 device can operate without a refresh command which is equal to 9 x t_REFI.
Rev. 1.02, 2007-07
18
03292006-08VU-L8WK