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V53C8258HT50 Просмотр технического описания (PDF) - Mosel Vitelic Corporation
Номер в каталоге
Компоненты Описание
производитель
V53C8258HT50
HIGH PERFORMANCE 256K X 8 EDO PAGE MODE CMOS DYNAMIC RAM
Mosel Vitelic Corporation
V53C8258HT50 Datasheet PDF : 18 Pages
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MOSEL VITELIC
Waveforms of CAS-before-RAS Refresh Counter Test Cycle
RAS
V
IH
V
IL
V
IH
CAS
V
IL
ADDRESS
V
IH
V
IL
t
RAS (1)
t
CHR (49)
t
CSR (47)
t
CP (43)
t
RSH (W)(25)
t
CAS (5)
READ CYCLE
V
IH
WE
V
IL
OE
V
IH
V
IL
V
IH
I/O
V
IL
WRITE CYCLE
t
WSR
V
IH
WB/WE
V
IL
V
IH
BE/OE
V
IL
I/O
V
IH
V
IL
t
RWH
t
RCS (7)
t
WCS (27)
t
ROH (16)
t
OAC (17)
t
LZ (21)
t
RWL (31)
t
CWL (26)
t
WCH (28)
D
OUT
t
DS (32)
t
DH (33)
D
IN
V53C8258H
t
RP (3)
t
RRH (15)
t
RCH (14)
t
HZ (22)
t
HZ (22)
t
HZ (22)
2736 13
Waveforms of CAS-before-RAS Refresh Cycle
RAS
V
IH
V
IL
CAS
V
IH
V
IL
I/O
V
OH
V
OL
t
RP (3)
t
RPC (48)
t
CP (43)
t
HZ (22)
t
RC (2)
t
RAS (1)
t
CSR (47)
t
CHR (49)
NOTE: WE, OE, A
0
–A
8
= Don’t care
V53C8258H Rev. 1.4 February 1997
13
t
RP (3)
2736 14
Don’t Care
Undefined
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