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EBE20RE4AAFA PDF预览

EBE20RE4AAFA

更新时间: 2022-11-25 10:32:54
品牌 Logo 应用领域
尔必达 - ELPIDA 动态存储器双倍数据速率
页数 文件大小 规格书
22页 187K
描述
2GB Registered DDR2 SDRAM DIMM (256M words x 72 bits, 1 Rank)

EBE20RE4AAFA 数据手册

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EBE20RE4AAFA  
Byte No. Function described  
Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 Hex value  
Comments  
15ns  
27  
28  
29  
30  
31  
Minimum row precharge time (tRP)  
0
0
0
0
0
0
0
0
0
0
1
0
1
1
0
1
1
1
0
0
1
1
1
1
0
1
1
1
1
0
0
1
0
0
1
0
0
0
1
0
3CH  
1EH  
3CH  
2DH  
02H  
Minimum row active to row active delay  
(tRRD)  
7.5ns  
15ns  
45ns  
2GB  
Minimum /RAS to /CAS delay (tRCD)  
Minimum active to precharge time  
(tRAS)  
Module rank density  
Address and command setup time  
before clock (tIS)  
-5C  
32  
0
0
0
0
0
0
0
0
1
0
1
1
1
0
0
0
1
1
0
1
0
0
1
1
0
1
1
0
0
0
0
0
0
0
0
1
1
0
0
0
25H  
35H  
38H  
48H  
10H  
0.25ns*1  
0.35ns*1  
0.38ns*1  
0.48ns*1  
0.10ns*1  
-4A  
Address and command hold time after  
clock (tIH)  
-5C  
33  
-4A  
Data input setup time before clock  
(tDS)  
-5C  
34  
35  
-4A  
0
0
0
0
0
1
1
0
0
0
1
0
0
1
1
1
15H  
23H  
0.15ns*1  
0.23ns*1  
Data input hold time after clock (tDH)  
-5C  
-4A  
0
0
0
0
1
1
0
1
1
1
0
1
0
0
0
0
28H  
3CH  
0.28ns*1  
15ns*1  
36  
37  
Write recovery time (tWR)  
Internal write to read command delay  
(tWTR)  
-5C  
0
0
0
1
1
1
1
0
1EH  
7.5ns*1  
-4A  
0
0
0
0
1
0
0
1
1
1
0
1
0
1
0
0
28H  
1EH  
10ns*1  
7.5ns*1  
TBD  
Internal read to precharge command  
delay (tRTP)  
38  
39  
40  
41  
Memory analysis probe characteristics 0  
0
0
0
0
0
1
0
0
1
0
0
1
0
1
1
0
1
0
0
0
0
00H  
06H  
3CH  
Extension of Byte 41 and 42  
Active command period (tRC)  
0
0
60ns*1  
Auto refresh to active/  
Auto refresh command cycle (tRFC)  
42  
43  
44  
0
1
0
0
0
1
0
0
0
0
1
0
0
1
1
1
0
1
0
0
1
0
1
0
1
1
0
1
0
0
1
0
1
1
0
1
0
0
1
0
7FH  
80H  
1EH  
23H  
28H  
127.5ns*1  
8ns*1  
SDRAM tCK cycle max. (tCK max.)  
Dout to DQS skew (tDQSQ)  
-5C  
0.30ns*1  
0.35ns*1  
0.40ns*1  
-4A  
Data hold skew (tQHS)  
-5C  
45  
-4A  
0
0
0
0
0
0
1
0
0
0
0
0
1
1
0
1
1
0
0
1
0
1
1
0
2DH  
0FH  
00H  
0.45ns*1  
46  
PLL relock time  
15µs  
47 to 61  
Data Sheet E0440E30 (Ver. 3.0)  
6

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