tm
CAS
TE
CH
READ WRITE CYCLE
(LATE WRITE and READ-MODIFY-WRITE CYCLES)
t
T221160A
RWC
RAS
t
t
RP
V
IH
RAS V
IL
t
t
CSH
t
t
RSH
CRP
t
RCD
t
CAS
CRP
V
IH
V
IL
t
t
ASR
t
AR
t
t
ASC
RAD
RAL
t
RAH
t
CAH
V
IH
ADDR V
IL
ROW
t
COLUMN
t
ROW
RWD
CWD
t
t
CWL
RWL
t
WP
RCS
t
t
AWD
V
IH
WE V
IL
t
t
t
AA
t
RAC
CAC
DS
t
DH
t
CLZ
V
IOH
I/O V
IOL
t
VAILD D
OUT
VAILD D
IN
t
OAC
OFF2
t
OEH
V
IH
OE V
IL
FAST-PAGE-MODE READ CYCLE
t
RA SC
t
RP
RA S
V
V
IH
IL
t
t
CSH
t
t
PC
t
t
t
RSH
CR P
t
CR P
t
RC D
CA S
t
CP
CA S
t
CP
t
CA S
CPN
CA S
V
V
IH
IL
t
t
t
A R
t
t
RA D
A SC
t
RA L
A SR
t
RA H
CA H
t
A SC
t
CA H
t
A SC
t
CA H
A D D R
V
V
IH
IL
R O W
C O L U M N
C O L U M N
C O L U M N
t
R O W
RR H
t
RC S
t
RC H
W E
V
V
IH
IL
t
t
t
t
t
A A
t
t
t
A A
A A
t
A C P
CA C
t
RA C
CA C
O FF1
t
V A IL D
D AT A
A C P
CA C
t
t
O FF1
t
t
O FF1
CLZ
CLZ
V A IL D
D AT A
O PE N
I/O
V
V
IO H
O PE N
CLZ
V A IL D
D AT A
IO L
t
O A C
t
O FF2
t
O A C
t
O FF2
t
O A C
t
O FF2
O E
V
V
IH
IL
D O N 'T C A R E
U N D E F IN E D
Note:
1. t
OFF1
is referenced from the rising edge of RAS or CAS , whichever occurs last.
2. t
PC
can be measured from falling edge of CAS to falling edge of CAS , or from rising edge of
CAS to rising edge of CAS . Both measurements must meet the t
PC
specification.
Taiwan Memory Technology, Inc. reserves the right
P. 9
to change products or specifications without notice.
Publication Date: FEB. 2002
Revision:A
TMT [ TAIWAN MEMORY TECHNOLOGY ]
