MOSEL VITELIC
V53C8256H
Waveforms of Fast Page Mode Read-Write Cycle
t
RAS (1)
V
IH
RAS
V
IL
t
t
CSH (4)
RP (3)
t
RCD (6)
t
t
PCM (50)
RSH (W)(25)
t
t
CP(43)
CRP (13)
t
t
V
t
CAS (5)
CAS (5)
CAS (5)
IH
CAS
t
RAD (24)
V
IL
t
t
RAH (9)
CAR (44)
t
t
t
t
ASC (10)
ASC (10)
CAH (11)
ASC (10)
t
CAH (11)
t
t
CAH (11)
ASR (8)
V
IH
COLUMN
ADDRESS
COLUMN
ADDRESS
COLUMN
ADDRESS
ROW
ADD
ADDRESS
V
IL
t
t
t
RWD (39)
CWD (38)
CWD (38)
t
t
t
CWL (26)
RWL(31)
RCS (7)
t
t
t
CWL (26)
CWD (38)
CWL (26)
V
IH
WE
OE
V
IL
t
AWD (41)
WP(29)
OAC (17)
t
t
AWD (41)
AWD (41)
WP(29)
OAC (17)
t
t
t
t
WP(29)
CAA (20)
t
t
t
OAC (17)
V
IH
V
IL
t
t
CAP (45)
CAP (45)
t
t
t
CAA (20)
t
CAA (20)
t
OED (35)
t
OED (35)
OED (35)
t
t
CAC (18)
CAC (18)
CAC (18)
t
t
t
t
HZ (22)
RAC (19)
HZ (22)
t
HZ (22)
t
t
t
DH (33)
DH (33)
DH (33)
DS (32)
t
t
DS (32)
DS (32)
V
I/OH
OUT
OUT
OUT
I/O
IN
t
IN
IN
V
I/OL
t
t
LZ (21)
8256H-12
LZ (21)
LZ (21)
Waveforms of RAS Only Refresh Cycle
t
RC (2)
t
RP (3)
t
RAS (1)
V
V
IH
IL
RAS
CAS
t
CRP (13)
V
V
IH
IL
t
t
RAH (9)
ASR (8)
V
V
IH
IL
ADDRESS
ROWADDR
8256H-13
NOTE: WE, OE = Don’t care
Undefined
Don’t Care
V53C8256H Rev. 1.2 July 1997
11
MOSEL [ MOSEL VITELIC, CORP ]
