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AS4DDR232M64PBGR-5/IT 参数 Datasheet PDF下载

AS4DDR232M64PBGR-5/IT图片预览
型号: AS4DDR232M64PBGR-5/IT
PDF下载: 下载PDF文件 查看货源
内容描述: 32Mx64 DDR2 SDRAM集成塑封微电路 [32Mx64 DDR2 SDRAM iNTEGRATED Plastic Encapsulated Microcircuit]
分类和应用: 内存集成电路动态存储器双倍数据速率
文件页数/大小: 28 页 / 363 K
品牌: AUSTIN [ AUSTIN SEMICONDUCTOR ]
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iPEM  
2.1 Gb SDRAM-DDR2  
Austin Semiconductor, Inc.  
AS4DDR232M64PBG  
FIGURE 4 - POWER-UP AND INITIALIZATION  
Notes appear on page 7  
VCC  
V
CC  
Q
1
t
1
VTD  
V
TT  
V
REF  
Tk0  
Tl0  
Tm0  
Tg0  
Th0  
Ti0  
Tj0  
Te0  
Tf0  
Tc0  
Td0  
Tb0  
T0  
Ta0  
t
CK  
CK#  
CK  
t
t
CL  
CL  
See  
note  
3
SSTL_18  
LVCMOS  
8
8
LOW LEVEL  
CKE LOW LEVEL  
ODT  
3
2
COMMAND  
REF  
LM  
LM  
VALID  
LM  
LM  
LM  
PRE  
PRE  
LM  
LM  
REF  
NOP  
7
DM  
9
ADDRESS  
CODE  
CODE  
CODE  
A10 = 1  
CODE  
CODE  
CODE  
CODE  
A10 = 1  
VALID  
High-Z  
High-Z  
7
DQS  
7
DQ  
High-Z  
RTT  
t
t
t
t
t
t
t
t
t
MRD  
T = 200μs (MIN)  
Power-up:  
CC and stable  
clock (CK, CK#)  
t
MRD  
t
T = 400ns  
(MIN)  
RPA  
MRD  
MRD  
MRD  
MRD  
EMR with  
RPA  
5
RFC  
RFC  
MRD  
Seenote4  
V
DLL ENABLE  
EMR(2)  
EMR(3)  
MR w/o  
EMR with  
DLL RESET OCD Default  
EMR with  
10  
11  
OCD Exit  
Normal  
Operation  
3
200 cycles of CK  
MR with  
DLL RESET  
Indicates a break in  
time scale  
DON’T CARE  
Austin Semiconductor, Inc.  
Austin, Texas 512.339.1188 www.austinsemiconductor.com  
AS4DDR232M64PBG  
Rev. 1.3 6/09  
6
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