MOSEL VITELIC
V53C8256H
Waveforms of Fast Page Mode Read-Write Cycle
VIH
RAS
VIL
V
IH
CAS
VIL
V
ADDRESS IH
VIL
tRAS (1)
tRCD (6)
t CSH (4)
tPCM (50)
t RAD (24)
tCAS (5)
tRAH (9)
tASC (10)
tASR (8)
tASC (10)
tCAH (11)
ROW
ADD
COLUMN
ADDRESS
tCP(43)
tCAS (5)
COLUMN
ADDRESS
tASC (10)
tCAH (11)
tRP (3)
tRSH (W)(25)
tCRP (13)
tCAS (5)
tCAR (44)
t CAH (11)
COLUMN
ADDRESS
V
IH
WE VIL
V
IH
OE VIL
VI/OH
I/O
VI/OL
t RCS (7)
tRWD (39)
t CWD (38)
tCAA (20)
t OAC (17)
tAWD (41)
tCWD (38)
t CWL (26)
tAWD (41)
t WP(29)
tOAC (17)
t CWL (26)
t CWD (38)
tRWL(31)
tCWL (26)
tAWD (41)
tWP (29)
tOAC (17)
tWP (29)
tOED (35)
tCAC (18)
tRAC (19)
tCAP (45)
tCAA (20)
tOED (35)
tCAC (18)
tHZ (22)
tDH (33)
tDS (32)
tCAP (45)
tCAA (20)
tHZ (22)
tDH (33)
tDS (32)
tOED (35)
tCAC (18)
tHZ (22)
tDH (33)
tDS (32)
OUT
IN
OUT
IN
OUT
IN
tLZ (21)
tLZ (21)
tLZ (21)
8256H-12
Waveforms of RAS Only Refresh Cycle
RAS V IH
V IL
CAS V IH
V IL
ADDRESS V IH
V IL
t CRP (13)
t ASR (8)
t RAH (9)
ROWADDR
NOTE: WE, OE = Don’t care
t RC (2)
t RAS (1)
t RP (3)
8256H-13
V53C8256H Rev. 1.2 July 1997
Don’t Care
Undefined
11