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HM5259165B датащи(PDF) 32 Page - Elpida Memory

номер детали HM5259165B
подробное описание детали  512M LVTTL interface SDRAM 133 MHz/100 MHz 8-Mword 횞 16-bit 횞 4-bank/16-Mword 횞 8-bit 횞 4-bank /32-Mword 횞 4-bit 횞 4-bank PC/133, PC/100 SDRAM
PDF  63 Pages
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производитель  ELPIDA [Elpida Memory]
домашняя страница  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

HM5259165B датащи(HTML) 32 Page - Elpida Memory

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HM5259165B/HM5259805B/HM5259405B-75/A6
Data Sheet E0118H10
32
Read with auto precharge to Write command interval
1. Different bank: When some banks are in the active state, the second write command (another bank) is
executed. However, DQM, DQMU/DQML must be set High so that the output buffer becomes High-Z before
data input. The internal auto-precharge of one bank starts at the next clock of the second command.
Read with Auto Precharge to Write Command Interval (Different bank)
CLK
Command
BS
Dout
Din
CL = 2
CL = 3
READ A
WRIT
in B0
in B1
in B2
in B3
Burst Length = 4
bank0
Read A
bank3
Write
Note: Internal auto-precharge starts at the timing indicated by "
".
DQM,
DQMU/DQML
High-Z
2. Same bank: The consecutive write command from read with auto precharge (the same bank) is illegal. It
is necessary to separate the two commands with a bank active command.



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