參數(shù)資料
型號: HM5257405B-A6
廠商: Elpida Memory, Inc.
元件分類: 圓形連接器
英文描述: Circular Connector; No. of Contacts:32; Series:; Body Material:Aluminum; Connecting Termination:Solder; Connector Shell Size:18; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:18-32
中文描述: 512M LVTTL接口SDRAM的133 MHz/100 MHz的8 Mword】16位】4-bank/16-Mword】8位】4銀行/ 32 Mword】4位】4銀行PC/133,電腦/ 100內(nèi)存
文件頁數(shù): 24/62頁
文件大?。?/td> 463K
代理商: HM5257405B-A6
HM5257165B/HM5257805B/HM5257405B-75/A6
Data Sheet E0081H10
24
2. Single write:
A single write operation is enabled by setting OPCODE (A9, A8) to (1, 0). In a single write
operation, data is only written to the column address and the bank select address (BA0/BA1) specified by the
write command set cycle without regard to the burst length setting. (The latency of data input is 0 clock).
WRIT
CLK
Command
Din
ACTV
Row
Column
in 0
Address
t
RCD
Auto Precharge
Read with auto-precharge:
In this operation, since precharge is automatically performed after completing a
read operation, a precharge command need not be executed after each read operation. The command executed
for the same bank after the execution of this command must be the bank active (ACTV) command. In
addition, an interval defined by l
APR
is required before execution of the next command.
CAS
latency
Precharge start cycle
3
2 cycle before the final data is output
2
1 cycle before the final data is output
Burst Read
(Burst Length = 4)
CLK
lAPR
lRAS
lAPR
CL=2 Command
CL=3 Command
DQ (input)
DQ (input)
Note: Internal auto-precharge starts at the timing indicated by " ".
And an interval of t
RAS
(l
RAS
) is required between previous active (ACTV) command and internal precharge " ".
ACTV
READ A
ACTV
out3
out2
out1
out0
lRAS
ACTV
READ A
ACTV
out3
out2
out1
out0
相關PDF資料
PDF描述
HM5257805BTD-75 512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5257805BTD-A6 512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5259405B-A6 512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5259165B 512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5259165B-75 512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
相關代理商/技術參數(shù)
參數(shù)描述
HM5257405BTD-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5257405BTD-A6 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5257805B-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5257805B-A6 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM
HM5257805BTD-75 制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 】 16-bit 】 4-bank/16-Mword 】 8-bit 】 4-bank /32-Mword 】 4-bit 】 4-bank PC/133, PC/100 SDRAM