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HYS64T256022EDL-2.5-B 参数 Datasheet PDF下载

HYS64T256022EDL-2.5-B图片预览
型号: HYS64T256022EDL-2.5-B
PDF下载: 下载PDF文件 查看货源
内容描述: 200针双芯片小外形- DDR2 -SDRAM模块 [200-Pin Dual Die Small-Outline-DDR2-SDRAM Modules]
分类和应用: 存储内存集成电路动态存储器双倍数据速率时钟
文件页数/大小: 40 页 / 2384 K
品牌: QIMONDA [ QIMONDA AG ]
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Internet Data Sheet  
HYS64T256022EDL–[25F/2.5/3/3S/3.7]–B  
Small Outline DDR2 SDRAM Modules  
3.3  
Timing Characteristics  
3.3.1  
Speed Grade Definitions  
All Speed grades faster than DDR2-400B comply with DDR2-400B timing specifications(tCK = 5ns with tRAS = 40ns).  
Speed Grade Definition: Table 12 for DDR2–800, Table 13 for DDR2–667D and Table 14 for DDR2–533C  
TABLE 12  
Speed Grade Definition Speed Bins for DDR2–800  
Speed Grade  
DDR2–800D  
DDR2–800E  
Unit  
Note  
QAG Sort Name  
CAS-RCD-RP latencies  
–2.5F  
–2.5  
5–5–5  
6–6–6  
tCK  
Parameter  
Symbol  
Min.  
Max.  
Min.  
Max.  
1)2)3)4)  
1)2)3)4)  
1)2)3)4)  
1)2)3)4)  
1)2)3)4)5)  
1)2)3)4)  
1)2)3)4)  
1)2)3)4)  
Clock Frequency  
@ CL = 3  
@ CL = 4  
@ CL = 5  
@ CL = 6  
tCK  
5
8
5
8
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
tCK  
3.75  
2.5  
8
3.75  
3
8
tCK  
8
8
tCK  
2.5  
8
2.5  
45  
60  
15  
15  
8
Row Active Time  
Row Cycle Time  
RAS-CAS-Delay  
Row Precharge Time  
tRAS  
tRC  
tRCD  
tRP  
45  
70000  
70000  
57.5  
12.5  
12.5  
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 VREF stabilizes. During the period before VREF stabilizes, CKE = 0.2 x VDDQ is recognized as low.  
4) The output timing reference voltage level is VTT  
.
5) 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 tREFI  
t
.
Rev. 1.0, 2006-11  
14  
11172006-DXYK-2PPW  
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