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HM5259165B bảng dữ liệu(PDF) 25 Page - Elpida Memory

tên linh kiện HM5259165B
Giải thích chi tiết về linh kiện  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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nhà sản xuất  ELPIDA [Elpida Memory]
Trang chủ  http://www.elpida.com/en
Logo ELPIDA - Elpida Memory

HM5259165B bảng dữ liệu(HTML) 25 Page - Elpida Memory

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HM5259165B/HM5259805B/HM5259405B-75/A6
Data Sheet E0118H10
25
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 tRAS (lRAS) 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



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