V53C8258H
MOSEL VITELIC
Waveforms of CAS-before-RAS Refresh Counter Test Cycle
t
t
RAS (1)
RP (3)
V
V
IH
IL
RAS
t
RSH (W)(25)
t
t
CP (43)
CHR (49)
t
t
CSR (47)
CAS (5)
V
V
IH
IL
CAS
V
V
IH
IL
ADDRESS
t
t
RRH (15)
RCH (14)
READ CYCLE
t
RCS (7)
V
V
IH
IL
WE
OE
I/O
t
ROH (16)
t
OAC (17)
V
V
IH
IL
t
t
HZ (22)
HZ (22)
t
LZ (21)
V
V
IH
IL
D
OUT
t
t
t
RWL (31)
CWL (26)
HZ (22)
WRITE CYCLE
t
t
t
t
WCS (27)
WSR
RWH
WCH (28)
V
V
IH
IL
WB/WE
BE/OE
I/O
V
V
IH
IL
t
t
DH (33)
DS (32)
V
V
IH
IL
D
IN
2736 13
Waveforms of CAS-before-RAS Refresh Cycle
t
t
RC (2)
t
t
RP (3)
RP (3)
RAS (1)
V
V
IH
IL
RAS
t
RPC (48)
t
t
t
CP (43)
HZ (22)
CHR (49)
t
CSR (47)
V
V
IH
IL
CAS
I/O
V
V
OH
OL
2736 14
WE, OE, A –A = Don’t care
NOTE:
8
0
Don’t Care
Undefined
V53C8258H Rev. 1.4 February 1997
13
MOSEL [ MOSEL VITELIC, CORP ]
