參數(shù)資料
型號: HB52E89EM
廠商: Hitachi,Ltd.
英文描述: 64 MB Unbuffered SDRAM DIMM(64MB 未緩沖同步DRAM DIMM)
中文描述: 64 MB的無緩沖SDRAM的內(nèi)存(64MB的未緩沖同步的DRAM內(nèi)存)
文件頁數(shù): 48/64頁
文件大小: 2741K
代理商: HB52E89EM
HB52E88EM-F, HB52E89EM-F, HB52E168EN-F, HB52E169EN-F
48
When the precharge command is executed for the same bank as the read command that preceded it, the min-
imum interval between the two commands is one clock. However, since the output buffer then becomes
High-Z after the clocks defined by l
HZP
, there is a case of interruption to burst read data output will be inter-
rupted, if the precharge command is input during burst read. To read all data by burst read, the clocks defined
by l
EP
must be assured as an interval from the final data output to precharge command execution.
READ to PRECHARGE Command Interval (same bank): To output all data
CE Latency = 2, Burst Length = 4
CE Latency = 3, Burst Length = 4
READ to PRECHARGE Command Interval (same bank): To stop output data
CE Latency = 2, Burst Length = 1, 2, 4, 8, full page burst
CK
Command
Dout
READ
PRE/PALL
out A0
out A1
out A2
out A3
CL=2
l = -1 cycle
CK
Command
Dout
READ
PRE/PALL
out A0
out A1
out A2
out A3
CL=3
l = -2 cycle
EP
CK
Command
Dout
READ
PRE/PALL
out A0
High-Z
l
HZP
= 2
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