is42s16128 Integrated Silicon Solution, Inc., is42s16128 Datasheet - Page 60

• Manufacturer Part Number: is42s16128
• Description: 128k Words Bits Banks Sdram
• Manufacturer: Integrated Silicon Solution, Inc.

Read Cycle / Ping Pong Operation (Bank Switching)
60
IS42S16128
A0-A7
DQM
CKE
RAS
CAS
CAS latency = 3, burst length = 2
CLK
WE
CS
I/O
A8
A9
t
CKS
t
CS
T0
t
t
t
t
t
t
t
t
CS
CS
CS
AS
AS
t
AS
CKA
CK
CH
<
BANK 0
ACT 0
ROW
ROW
T1
(BANK 0 TO 1)
t
CHI
>
(BANK 0)
(BANK 0)
(BANK 0)
t
t
t
t
t
RCD
t
t
t
t
RRD
t
AH
AH
RAS
CH
CH
CH
AH
RC
T2
t
CL
T3
<
BANK 1
ROW
ROW
ACT1
T4
>
(BANK 1)
t
RCD
<
AUTO PRE
<
COLUMN
READA 0
NO PRE
READ 0
BANK 0
T5
>
(BANK 0)
>
t
t
CAC
CS
T6
(BANK 1)
(BANK 1)
t
t
RAS
t
QMD
RC
Integrated Silicon Solution, Inc. — 1-800-379-4774
<
<
AUTO PRE
COLUMN
READA 1
READ 1
BANK 1
NO PRE
T7
>
>
(BANK 1)
t
AC
t
CAC
t
LZ
BANK 0 OR 1
<
BANK 0
PRE 0
T8
D
OUT
t
>
OH
0m
(BANK 0)
(BANK 0)
t
AC
t
RQL
t
RP
T9
D
OUT
t
OH
0m+1
t
AC
t
BANK 0 OR 1
CH
<
BANK1
PRE 1
T10
D
OUT
t
>
OH
(BANK1)
1m
t
AC
t
RP
<
BANK 0
ACT 0
ROW
ROW
T11
D
OUT
>
t
OH
1m+1
(BANK 0)
ISSI
(BANK 0)
(BANK 0)
t
HZ
t
t
t
RCD
RAS
RC
T12
Undefined
Don't Care
03/13/00
Rev. A
®