IS42S83200G, IS42S16160G
IS45S83200G, IS45S16160G
32Meg x 8, 16Meg x16
MARCH 2013
256Mb SYNCHRONOUS DRAM
OVERVIEW
FEATURES
ISSI'sꢀ256MbꢀSynchronousꢀDRAMꢀꢀachievesꢀhigh-speedꢀ
data transfer using pipeline architecture. All inputs and
outputs signals refer to the rising edge of the clock input.
Theꢀ256MbꢀSDRAMꢀisꢀorganizedꢀasꢀfollows.ꢀ
•ꢀ Clockꢀfrequency:ꢀ200,166,ꢀ143ꢀꢀMHz
•ꢀ Fullyꢀsynchronous;ꢀallꢀsignalsꢀreferencedꢀtoꢀaꢀ
positive clock edge
•ꢀ Internalꢀbankꢀforꢀhidingꢀrowꢀaccess/precharge
•ꢀ SingleꢀPowerꢀsupply:ꢀ3.3Vꢀ+ꢀ0.3Vꢀ
•ꢀ LVTTLꢀinterface
IS42S83200Gꢀ
IS42S16160Gꢀ
8Mꢀxꢀ8ꢀxꢀ4ꢀBanksꢀ 4Mꢀx16x4ꢀBanksꢀ
54-pinꢀTSOPIIꢀ
54-ballꢀBGAꢀ
54-pinꢀTSOPII
54-ballꢀBGAꢀ
•ꢀ Programmableꢀburstꢀlengthꢀ
–ꢀ(1,ꢀ2,ꢀ4,ꢀ8,ꢀfullꢀpage)
ꢀ ꢀ
•ꢀ Programmableꢀburstꢀsequence:ꢀ
KEY TIMING PARAMETERS
Sequential/Interleave
Parameter
-5
-6
-7
Unit
•ꢀ AutoꢀRefreshꢀ(CBR)
•ꢀ SelfꢀRefresh
ClkꢀCycleꢀTimeꢀ ꢀꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ ꢀ
ꢀ
ꢀ
ꢀ
ꢀ5ꢀ
10ꢀ
ꢀ6ꢀ
10ꢀ
ꢀ7ꢀ
7.5ꢀ
nsꢀ
ns
•ꢀ 8Kꢀrefreshꢀcyclesꢀeveryꢀ32ꢀmsꢀ(A2ꢀgrade)ꢀorꢀ
64ꢀmsꢀ(commercial,ꢀindustrial,ꢀA1ꢀgrade)
ClkꢀꢀFrequencyꢀ ꢀꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ ꢀ
ꢀ
ꢀ
ꢀ
200ꢀ
100ꢀ
166ꢀ
100ꢀ
143ꢀ
133ꢀ
Mhzꢀ
Mhz
•ꢀ Randomꢀcolumnꢀaddressꢀeveryꢀclockꢀcycle
•ꢀ ProgrammableꢀCAS latency (2, 3 clocks)
AccessꢀTimeꢀꢀfromꢀClockꢀ
ꢀ
ꢀ
ꢀ
ꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀ 5ꢀ
5ꢀ
5.4ꢀ
5.4ꢀ
5.4ꢀ
5.4ꢀ
nsꢀ
ns
•ꢀ Burstꢀread/writeꢀandꢀburstꢀread/singleꢀwriteꢀ
operations capability
•ꢀ Burstꢀterminationꢀbyꢀburstꢀstopꢀandꢀprechargeꢀ
command
ADDRESS TABLE
OPTIONS
Parameter
32M x 8
16M x 16
•ꢀ Package:
Configuration
8M x 8 x 4
banks
4M x 16 x 4
banks
54-pinꢀTSOP-IIꢀ
54-ballꢀBGA
Refresh Count
Com./Ind. 8K/64ms
A1 8K/64ms
8K/64ms
8K/64ms
8K/32ms
•ꢀ OperatingꢀTemperatureꢀRange:
Commercial (0oC to +70oC)
A2 8K/32ms
Industrialꢀ(-40oCꢀtoꢀ+85oC)
Row Addresses
A0-A12
A0-A12
A0-A8
AutomotiveꢀGradeꢀA1ꢀ(-40oCꢀtoꢀ+85oC)
AutomotiveꢀGradeꢀA2ꢀ(-40oC to +105oC)
Column Addresses
Bank Address Pins
Auto Precharge Pins
A0-A9
BA0, BA1
A10/AP
BA0, BA1
A10/AP
Copyright © 2013 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time with-
out notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain
the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such ap-
plications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. — www.issi.com
1
Rev. E
3/13/2013