參數(shù)資料
型號: HM5113165F
廠商: Hitachi,Ltd.
英文描述: 128M EDO DRAM(128M 擴(kuò)展數(shù)據(jù)輸出模式動態(tài)RAM)
中文描述: 128M的內(nèi)存江戶(128M的擴(kuò)展數(shù)據(jù)輸出模式動態(tài)內(nèi)存)
文件頁數(shù): 5/32頁
文件大?。?/td> 461K
代理商: HM5113165F
HM5113165F Series
5
Operation Table
RAS
LCAS
UCAS
WE
OE
I/O 0 to I/O 7
I/O 8 to I/O 15 Operation
H
×
×
×
×
High-Z
High-Z
Standby
L
L
H
H
L
Dout
High-Z
Read cycle
L
H
L
H
L
High-Z
Dout
L
L
L
H
L
Dout
Dout
L
L
H
L*
2
×
×
×
Din
×
Early write cycle
L
H
L
L*
2
×
Din
L
L
L
L*
2
Din
Din
L
L
H
L*
2
H
Din
×
Delayed write cycle
L
H
L
L*
2
H
×
Din
L
L
L
L*
2
H
Din
Din
L
L
H
H to L
L to H
Dout/Din
High-Z
Read-modify-write cycle
L
H
L
H to L
L to H
High-Z
Dout/Din
L
L
L
H to L
L to H
Dout/Din
Dout/Din
L
H
H
×
×
×
High-Z
High-Z
RAS
-only refresh cycle
CAS
-before-
RAS
refresh cycle or
Self refresh cycle (L-version)
H to L
L
L
H
High-Z
High-Z
L
Notes: 1. H: V
IH
(inactive) L: V
IL
(active)
×
: V
IH
or V
IL
2. t
WCS
0 ns: Early write cycle
t
WCS
< 0 ns: Delayed write cycle
3.
UCAS
controls the upper pellet (I/O 8 to 15) only, and
LCAS
controls the lower pellet (I/O 0 to 7)
only. Therefore, mode, read/write and High-Z control are done independently by each
UCAS
,
LCAS
.
L
L
H
H
High-Z
High-Z
Read cycle (Output disabled)
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