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71V3557S80BGG

Description
Cache SRAM, 128KX36, 8ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119
Categorystorage   
File Size524KB,28 Pages
ManufacturerIDT (Integrated Device Technology)
Environmental Compliance  
Download Datasheet Parametric View All

71V3557S80BGG Overview

Cache SRAM, 128KX36, 8ns, CMOS, PBGA119, 14 X 22 MM, PLASTIC, BGA-119

71V3557S80BGG Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
MakerIDT (Integrated Device Technology)
Parts packaging codeBGA
package instructionBGA, BGA119,7X17,50
Contacts119
Reach Compliance Codecompliant
ECCN code3A991.B.2.A
Is SamacsysN
Maximum access time8 ns
Other featuresFLOW-THROUGH ARCHITECHTURE
Spare memory width18
Maximum clock frequency (fCLK)95 MHz
I/O typeCOMMON
JESD-30 codeR-PBGA-B119
JESD-609 codee1
length22 mm
memory density4718592 bit
Memory IC TypeCACHE SRAM
memory width36
Humidity sensitivity level3
Number of functions1
Number of terminals119
word count131072 words
character code128000
Operating modeSYNCHRONOUS
Maximum operating temperature70 °C
Minimum operating temperature
organize128KX36
Output characteristics3-STATE
Package body materialPLASTIC/EPOXY
encapsulated codeBGA
Encapsulate equivalent codeBGA119,7X17,50
Package shapeRECTANGULAR
Package formGRID ARRAY
Parallel/SerialPARALLEL
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Certification statusNot Qualified
Maximum seat height2.36 mm
Maximum standby current0.04 A
Minimum standby current3.14 V
Maximum slew rate0.25 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 levelCOMMERCIAL
Terminal surfaceTin/Silver/Copper (Sn/Ag/Cu)
Terminal formBALL
Terminal pitch1.27 mm
Terminal locationBOTTOM
Maximum time at peak reflow temperature30
width14 mm
Base Number Matches1
128K x 36, 256K x 18,
3.3V Synchronous ZBT™ SRAMs
3.3V I/O, Burst Counter,
Flow-Through Outputs
x
x
IDT71V3557S
IDT71V3559S
IDT71V3557SA
IDT71V3559SA
Features
128K x 36, 256K x 18 memory configurations
Supports high performance system speed - 100 MHz
(7.5 ns Clock-to-Data Access)
ZBT
TM
Feature - No dead cycles between write and read
cycles
Internally synchronized output buffer enable eliminates
the need to control
OE
Single R/W (READ/WRITE) control pin
W
4-word burst capability (Interleaved or linear)
Individual byte write (BW
1
-
BW
4
) control (May tie active)
BW
Three chip enables for simple depth expansion
3.3V power supply (±5%), 3.3V (±5%) I/O Supply (V
DDQ
)
Optional Boundary Scan JTAG Interface (IEEE 1149.1
complaint)
Packaged in a JEDEC Standard 100-pin plastic thin quad
flatpack (TQFP), 119 ball grid array (BGA) and 165 fine
pitch ball grid array (fBGA)
x
x
x
x
x
x
x
x
x
Description
The IDT71V3557/59 are 3.3V high-speed 4,718,592-bit (4.5 Mega-
bit) synchronous SRAMs organized as 128K x 36/256K x 18. They are
designed to eliminate dead bus cycles when turning the bus around
between reads and writes, or writes and reads. Thus they have been
given the name ZBT
TM
, or Zero Bus Turnaround.
Address and control signals are applied to the SRAM during one clock
cycle, and on the next clock cycle the associated data cycle occurs, be
it read or write.
The IDT71V3557/59 contain address, data-in and control signal
registers. The outputs are flow-through (no output data register). Output
enable is the only asynchronous signal and can be used to disable the
outputs at any given time.
A Clock Enable (CEN) pin allows operation of the IDT71V3557/59
to be suspended as long as necessary. All synchronous inputs are
ignored when (CEN) is high and the internal device registers will hold
their previous values.
There are three chip enable pins (CE
1
, CE
2
,
CE
2
) that allow the user
to deselect the device when desired. If any one of these three is not asserted
when ADV/LD is low, no new memory operation can be
initiated. However, any pending data transfers (reads or writes) will
be completed. The data bus will tri-state one cycle after chip is de-
selected or a write is initiated.
The IDT71V3557/59 have an on-chip burst counter. In the burst
mode, the IDT71V3557/59 can provide four cycles of data for a single
address presented to the SRAM. The order of the burst sequence is
defined by the
LBO
input pin. The
LBO
pin selects between linear and
interleaved burst sequence. The ADV/LD signal is used to load a new
external address (ADV/LD = LOW) or increment the internal burst counter
(ADV/LD = HIGH).
The IDT71V3557/59 SRAMs utilize IDT's latest high-performance
CMOS process and are packaged in a JEDEC standard 14mm x 20mm
100-pin thin plastic quad flatpack (TQFP) as well as a 119 ball grid array
(BGA) and a 165 fine pitch ball grid array (fBGA).
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
Input
I/O
Supply
Supply
Synchronous
Synchronous
Asynchronous
Synchronous
Synchronous
Synchronous
N/A
Synchronous
Static
Synchronous
Synchronous
N/A
Synchronous
Asynchronous
Synchronous
Synchronous
Static
Static
5282 tbl 01
Pin Description Summary
A
0
-A
17
Address Inputs
Chip Enables
Output Enable
Read/Write Signal
Clock Enable
Individual Byte Write Selects
Clock
Advance burst address / Load new address
Linear / Interleaved Burst Order
Test Mode Select
Test Data Input
Test Clock
Test Data Output
JTAG Reset (Optional)
Sleep Mode
Data Input / Output
Core Power, I/O Power
Ground
CE
1
, CE
2
,
CE
2
OE
R/
W
CEN
BW
1
,
BW
2
,
BW
3
,
BW
4
CLK
ADV/
LD
LBO
TMS
TDI
TCK
TDO
TRST
ZZ
I/O
0
-I/O
31
, I/O
P1
-I/O
P4
V
DD
, V
DDQ
V
SS
FEBRUARY 2009
1
©2004 Integrated Device Technology, Inc.
DECEMBER 2005
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