IS42S86400B
IS42S16320B, IS45S16320B
64M x 8, 32M x 16
512Mb SYNCHRONOUS DRAM
SEPTEMBER 2009
OVERVIEW
FEATURES
ISSI'sꢀ512MbꢀSynchronousꢀDRAMꢀꢀachievesꢀhigh-speedꢀ
data transfer using pipeline architecture. All inputs and
outputs signals refer to the rising edge of the clock input.
Theꢀ512MbꢀSDRAMꢀisꢀorganizedꢀasꢀfollows.ꢀ
•ꢀ Clockꢀfrequency:ꢀ166,ꢀ143,ꢀ133ꢀꢀMHz
•ꢀ Fullyꢀsynchronous;ꢀallꢀsignalsꢀreferencedꢀtoꢀaꢀ
positive clock edge
•ꢀ Internalꢀbankꢀforꢀhidingꢀrowꢀaccess/precharge
•ꢀ Powerꢀsupply
Vd d
Vd d q
IS42/45S16320Bꢀ ꢀ3.3Vꢀ 3.3Vꢀ
IS42S86400Bꢀ
IS42/45S16320Bꢀ
ꢀ IS42S86400Bꢀ
•ꢀ LVTTLꢀinterface
ꢀ3.3Vꢀ 3.3Vꢀꢀꢀ
16Mx8x4ꢀBanksꢀ 8Mꢀx16x4ꢀBanksꢀ
54-pinꢀTSOPIIꢀ
54-pinꢀTSOPII
54-ballꢀW-BGAꢀ
•ꢀ Programmableꢀburstꢀlengthꢀ
–ꢀ(1,ꢀ2,ꢀ4,ꢀ8,ꢀfullꢀpage)
ꢀ
ꢀ
•ꢀ Programmableꢀburstꢀsequence:ꢀ
Sequential/Interleaveꢀ
•ꢀ AutoꢀRefreshꢀ(CBR)
•ꢀ SelfꢀRefresh
KEY TIMING PARAMETERS
•ꢀ 8Kꢀrefreshꢀcyclesꢀeveryꢀ64ꢀms
•ꢀ Randomꢀcolumnꢀaddressꢀeveryꢀclockꢀcycle
•ꢀ ProgrammableꢀCASꢀlatencyꢀ(2,ꢀ3ꢀclocks)
Parameter
-6
-7
-75E Unit
ClkꢀCycleꢀTimeꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ
ꢀꢀ
6ꢀ
10ꢀ
ꢀ
ꢀ
ꢀ
7ꢀ
10ꢀ
–ꢀ
7.5ꢀ
nsꢀ
ns
•ꢀ Burstꢀread/writeꢀandꢀburstꢀread/singleꢀwriteꢀ
operations capability
ClkꢀFrequencyꢀ
ꢀꢀ
ꢀ
ꢀ
ꢀ
•ꢀ Burstꢀterminationꢀbyꢀburstꢀstopꢀandꢀprechargeꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ
166ꢀ
100ꢀ
143ꢀ
100ꢀ
–ꢀ
133ꢀ
Mhzꢀ
Mhz
command
AccessꢀTimeꢀꢀfromꢀClockꢀ
CASꢀLatencyꢀ=ꢀ3ꢀ
CASꢀLatencyꢀ=ꢀ2ꢀ
ꢀ
ꢀ
ꢀ
–ꢀ
5.5ꢀ
ꢀ
•ꢀ Availableꢀinꢀ54-pinꢀTSOP-IIꢀandꢀ54-ballꢀW-BGAꢀ
(x16ꢀonly)
5.4ꢀ
6ꢀ
5.4ꢀ
6ꢀ
nsꢀ
ns
•ꢀ OperatingꢀTemperatureꢀRange:
Commercial:ꢀ0oC to +70oC
Industrial:ꢀ-40oCꢀtoꢀ+85oC
Automotive,ꢀA1:ꢀ-40oCꢀtoꢀ+85oC
Copyright © 2006 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. — www.issi.com
1
Rev. C
08/27/09