Integrated Silicon Solution, Inc. 1
Rev. C
05/27/2010
Copyright © 2010 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without 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 applications 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
IS61VPS102436A IS61LPS102436A
IS61VPS204818A IS61LPS204818A
FEATURES
• Internalself-timedwritecycle
• IndividualByteWriteControlandGlobalWrite
• Clockcontrolled,registeredaddress,dataand
control
• BurstsequencecontrolusingMODEinput
• Threechipenableoptionforsimpledepthex-
pansion and address pipelining
• Commondatainputsanddataoutputs
• AutoPower-downduringdeselect
• Singlecycledeselect
• SnoozeMODEforreduced-powerstandby
• PowerSupply
LPS: V
d d 3.3V + 5%, Vd d q 3.3V/2.5V + 5%
VPS: V
d d 2.5V + 5%, Vd d q 2.5V + 5%
• JEDEC100-PinTQFPand165-ballPBGA
packages
• Lead-freeavailable
DESCRIPTION
The ISSI IS61LPS/VPS102436A and IS61LPS/VPS
204818Aarehigh-speed,low-powersynchronousstatic
RAMs
designed to provide burstable,
high-performance
memory for communication and networking applications.
TheIS61LPS/VPS102436Aisorganizedas1,048,476
wordsby36bits.TheIS61LPS/VPS204818A is organized
as2M-wordby18bits.FabricatedwithISSI's advanced
CMOS technology, the deviceintegrates a 2-bit burst
counter,high-speedSRAMcore,andhigh-drivecapability
outputs into a single monolithic circuit. All synchronous
inputspassthroughregisterscontrolledbyapositive-
edge-triggeredsingleclockinput.
Writecyclesareinternallyself-timedandareinitiatedby
therisingedgeoftheclockinput.Writecyclescanbe
one to four bytes wide as controlled by the write control
inputs.
Separate byte enables allow individual bytes to be written.
Thebytewriteoperationisperformedbyusingthebyte
write enable (BWE) input combined with one or more
individual byte write signals (BWx). Inaddition,Global
Write(GW) is available for writing all bytes at one time,
regardless of the byte write controls.
BurstscanbeinitiatedwitheitherADSP (Address Status
Processor) or ADSC (Address Status Cache Controller)
input pins. Subsequent burst addresses can be gener-
ated internally and controlled by the ADV (burst address
advance) input pin.
Themodepinisusedtoselecttheburstsequenceor-
der,LinearburstisachievedwhenthispinistiedLOW.
InterleaveburstisachievedwhenthispinistiedHIGH
or left floating.
1Mb x 36, 2Mb x 18
36Mb SYNCHRONOUS PIPELINED,
SINGLE CYCLE DESELECT STATIC RAM
JUNE 2010
FAST ACCESS TIME
Symbol Parameter 200 166 Units
tk q ClockAccessTime 3.1 3.5 ns
tk c CycleTime 5 6 ns
Frequency 200 166 MHz
2 Integrated Silicon Solution, Inc.
Rev. C
05/27/2010
IS61VPS102436A, IS61LPS102436A, IS61VPS204818A, IS61LPS204818A
BLOCK DIAGRAM
20/21
BINARY
COUNTER
GW
CLR
CE
CLK
Q0
Q1
MODE
A0'
A0
A1
A1'
CLK
ADV
ADSC
ADSP
18/19 20/21
ADDRESS
REGISTER
CE
D
CLK
Q
DQ(a-h)
BYTE WRITE
REGISTERS
D
CLK
Q
ENABLE
REGISTER
CE
D
CLK
Q
ENABLE
DELAY
REGISTER
D
CLK
Q
BWE
BW(a-h)
x18: a,b
x36: a-d
CE
CE2
CE2
1Mx36;
2Mx18
MEMORY ARRAY
36,
or 18
INPUT
REGISTERS
CLK
OUTPUT
REGISTERS
CLK
OE
2/4/8
OE
DQa - DQd
36,
or 18
36,
or 18
A
POWER
DOWN
ZZ
Integrated Silicon Solution, Inc.3
Rev. C
05/27/2010
IS61VPS102436A, IS61LPS102436A, IS61VPS204818A, IS61LPS204818A
BOTTOMVIEW
165-PIN BGA
165-Ball,13x15mmBGA
1mmBallPitch,11x15BallArray

IS61LPS102436A-166TQLI

Mfr. #:
Manufacturer:
ISSI
Description:
SRAM 36M (1Mx36) 166MHz Sync SRAM 3.3v
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union