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IS61NF25618-10TQI

Description
ZBT SRAM, 256KX18, 10ns, CMOS, PQFP100, TQFP-100
Categorystorage    storage   
File Size151KB,20 Pages
ManufacturerIntegrated Silicon Solution ( ISSI )
Download Datasheet Parametric View All

IS61NF25618-10TQI Overview

ZBT SRAM, 256KX18, 10ns, CMOS, PQFP100, TQFP-100

IS61NF25618-10TQI Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerIntegrated Silicon Solution ( ISSI )
Parts packaging codeQFP
package instructionTQFP-100
Contacts100
Reach Compliance Codecompliant
ECCN code3A991.B.2.A
Maximum access time10 ns
Other featuresFLOW-THROUGH ARCHITECTURE
Maximum clock frequency (fCLK)83 MHz
I/O typeCOMMON
JESD-30 codeR-PQFP-G100
JESD-609 codee0
length20 mm
memory density4718592 bit
Memory IC TypeZBT SRAM
memory width18
Number of functions1
Number of terminals100
word count262144 words
character code256000
Operating modeSYNCHRONOUS
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
organize256KX18
Output characteristics3-STATE
Package body materialPLASTIC/EPOXY
encapsulated codeLQFP
Encapsulate equivalent codeQFP100,.63X.87
Package shapeRECTANGULAR
Package formFLATPACK, LOW PROFILE
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)240
power supply3.3 V
Certification statusNot Qualified
Maximum seat height1.6 mm
Maximum standby current0.015 A
Minimum standby current3.14 V
Maximum slew rate0.29 mA
Maximum supply voltage (Vsup)3.465 V
Minimum supply voltage (Vsup)3.135 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.65 mm
Terminal locationQUAD
Maximum time at peak reflow temperature30
width14 mm
IS61NF12832 IS61NF12836 IS61NF25618
IS61NLF12832 IS61NLF12836 IS61NLF25618
128K x 32, 128K x 36 and 256K x 18
FLOW-THROUGH 'NO WAIT' STATE BUS
SRAM
ISSI
®
PRELIMINARY INFORMATION
OCTOBER 2000
FEATURES
100 percent bus utilization
No wait cycles between Read and Write
Internal self-timed write cycle
Individual Byte Write Control
Single R/W (Read/Write) control pin
Clock controlled, registered address,
data and control
Interleaved or linear burst sequence control
using MODE input
Three chip enables for simple depth expansion
and address pipelining for TQFP
Power Down mode
Common data inputs and data outputs
CKE
pin to enable clock and suspend operation
JEDEC 100-pin TQFP, 119 PBGA package
Single +3.3V power supply (± 5%)
NF Version: 3.3V I/O Supply Voltage
NLF Version: 2.5V I/O Supply Voltage
Industrial temperature available
DESCRIPTION
The 4 Meg 'NF' product family feature high-speed,
low-power synchronous static RAMs designed to provide
a burstable, high-performance, 'no wait' state, device for
network and communications customers. They are
organized as 131,072 words by 32 bits, 131,072 words
by 36 bits and 262,144 words by 18 bits, fabricated with
ISSI
's advanced CMOS technology.
Incorporating a 'no wait' state feature, wait cycles are
eliminated when the bus switches from read to write, or
write to read. This device integrates a 2-bit burst counter,
high-speed SRAM core, and high-drive capability outputs
into a single monolithic circuit.
All synchronous inputs pass through registers are controlled
by a positive-edge-triggered single clock input. Operations
may be suspended and all synchronous inputs ignored
when Clock Enable,
CKE
is HIGH. In this state the internal
device will hold their previous values.
All Read, Write and Deselect cycles are initiated by the
ADV input. When the ADV is HIGH the internal burst
counter is incremented. New external addresses can be
loaded when ADV is LOW.
Write cycles are internally self-timed and are initiated by
the rising edge of the clock inputs and when
WE
is LOW.
Separate byte enables allow individual bytes to be written.
A burst mode pin (MODE) defines the order of the burst
sequence. When tied HIGH, the interleaved burst sequence
is selected. When tied LOW, the linear burst sequence is
selected.
FAST ACCESS TIME
Symbol
t
KQ
t
KC
Parameter
Clock Access Time
Cycle Time
Frequency
-8.5*
8.5
10
100
-9
9
12
83
-10
10
12
83
Units
ns
ns
MHz
*This speed available only in NF version
This document contains PRELIMINARY INFORMATION data. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the
best possible product. We assume no responsibility for any errors which may appear in this publication. © Copyright 2000, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. — 1-800-379-4774
PRELIMINARY INFORMATION
11/30/00
Rev. 00C
1
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