HYS64T32000EU-25F-B2 Datasheet, PDF (18/95 Pages) Qimonda AG – 240-Pin unbuffered DDR2 SDRAM Modules

Internet Data Sheet
HYS[64/72]T[32/64/128][0/9]xxEU-[25F/2.5/3/3S/3.7]-B2
Unbuffered DDR2 SDRAM Module
3.3
Timing Characteristics
All Speed grades faster than DDR2-DDR400B comply with DDR2-DDR400B timing specifications (t_CK = 5ns with t_RAS = 40ns).
3.3.1
Speed Grade Definitions
Speed Grade Definition: Table 12 for DDR2–800; Table 13 for DDR2–667 and Table 14 for DDR2–533C
Speed Grade
TABLE 12
Speed Grade Definition Speed Bins for DDR2–800
DDR2–800D
DDR2–800E
Unit Note
QAG Sort Name
–2.5F
–2.5
CAS-RCD-RP latencies
5–5–5
6–6–6
t_CK
Parameter
Symbol
Min. Max.
Min. Max.
—
Clock Frequency
@ CL = 3
t_CK
5
8
5
8
ns
1)2)3)4)
@ CL = 4
t_CK
3.75 8
3.75 8
ns
1)2)3)4)
@ CL = 5
t_CK
2.5
8
3
8
ns
1)2)3)4)
@ CL = 6
t_CK
2.5
8
2.5
8
ns
1)2)3)4)
Row Active Time
t_RAS
45
70000
45
70000
ns
1)2)3)4)5)
Row Cycle Time
t_RC
57.5 —
60
—
ns
1)2)3)4)
RAS-CAS-Delay
t_RCD
12.5 —
15
—
ns
1)2)3)4)
Row Precharge Time
t_RP
12.5 —
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. 1.0, 2006-10
18
10202006-L0SM-FEYT