IS42S16800D-7TI ISSI, Integrated Silicon Solution Inc, IS42S16800D-7TI Datasheet - Page 21
IS42S16800D-7TI
Manufacturer Part Number
IS42S16800D-7TI
Description
IC SDRAM 128MBIT 143MHZ 54TSOP
Manufacturer
ISSI, Integrated Silicon Solution Inc
Datasheet
1.IS42S16800D-7TL.pdf
(62 pages)
Specifications of IS42S16800D-7TI
Format - Memory
RAM
Memory Type
SDRAM
Memory Size
128M (8Mx16)
Speed
143MHz
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
54-TSOP II
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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IS42S81600D,
INITIALIZE AND LOAD MODE REGISTER
Integrated Silicon Solution, Inc. — www.issi.com
Rev. E
07/28/08
DQML, DQMH
Notes:
1. If CS is High at clock High time, all commands applied are NOP.
2. The Mode register may be loaded prior to the Auto-Refresh cycles if desired.
3. JEDEC and PC100 specify three clocks.
4. Outputs are guaranteed High-Z after the command is issued.
COMMAND
A0-A9, A11
BA0, BA1
DQM/
CKE
CLK
A10
DQ
Power-up: V
and CLK stable
T = 100µs Min.
t
t
CKS
CMH
NOP
T
T0
t
t
CKH
CMS
t
CK
IS42S16800D
CC
SINGLE BANK
ALL BANKS
t
CMH
PRECHARGE
ALL BANKS
T1
Precharge
all banks
t
CMS
t
RP
t
CMH
REFRESH
Tn+1
AUTO
AUTO REFRESH
t
CMS
t
CH
NOP
t
RC
(1)
t
CL
REFRESH
To+1
AUTO
AUTO REFRESH
NOP
t
RC
t
t
t
Load MODE
REGISTER
AS
AS
AS
CODE
CODE
CODE
Tp+1
Program MODE REGISTER
t
t
t
AH
AH
AH
Tp+2
t
NOP
MRD
DON'T CARE
ACTIVE
BANK
ROW
ROW
Tp+3
(2, 3, 4)
21
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