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HY5PS12421BFP-Y5 参数 Datasheet PDF下载

HY5PS12421BFP-Y5图片预览
型号: HY5PS12421BFP-Y5
PDF下载: 下载PDF文件 查看货源
内容描述: 512MB DDR2 SDRAM [512Mb DDR2 SDRAM]
分类和应用: 动态存储器双倍数据速率
文件页数/大小: 38 页 / 612 K
品牌: HYNIX [ HYNIX SEMICONDUCTOR ]
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1HY5PS12421B(L)FP  
1HY5PS12821B(L)FP  
1HY5PS121621B(L)FP  
-Continue-  
PIN  
TYPE  
DESCRIPTION  
Data Strobe : Output with read data, input with write data. Edge aligned with read data,  
centered in write data. For the x16, LDQS correspond to the data on DQ0~DQ7; UDQS  
corresponds to the data on DQ8~DQ15. For the x8, an RDQS option using DM pin can  
be enabled via the EMRS(1) to simplify read timing. The data strobes DQS, LDQS,  
UDQS, and RDQS may be used in single ended mode or paired with optional comple-  
mentary signals DQS, LDQS,UDQS and RDQS to provide differential pair signaling to the  
system during both reads and wirtes. An EMRS(1) control bit enables or disables all  
complementary data strobe signals.  
DQS, (DQS)  
In this data sheet, "differential DQS signals" refers to any of the following with A10 = 0  
(UDQS),(UDQS) Input/  
(LDQS),(LDQS) Output  
(RDQS),(RDQS)  
of EMRS(1)  
x4 DQS/DQS  
x8 DQS/DQS  
x8 DQS/DQS, RDQS/RDQS,  
if EMRS(1)[A11] = 0  
if EMRS(1)[A11] = 1  
x16 LDQS/LDQS and UDQS/UDQS  
"single-ended DQS signals" refers to any of the following with A10 = 1  
of EMRS(1)  
x4 DQS  
x8 DQS  
if EMRS(1)[A11] = 0  
x8 DQS, RDQS, if EMRS(1)[A11] = 1  
x16 LDQS and UDQS  
NC  
No Connect : No internal electrical connection is present.  
VDDQ  
VSSQ  
VDDL  
VSSDL  
VDD  
Supply DQ Power Supply: 1.8V +/- 0.1V  
Supply DQ Ground  
Supply DLL Power Supply : 1.8V +/- 0.1V  
Supply DLL Ground  
Supply Power Supply : 1.8V +/- 0.1V  
Supply Ground  
VSS  
VREF  
Supply Reference voltage for inputs for SSTL interface.  
Rev. 0.7 / Oct. 2007  
9