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GS8320E18GT-150 Folha de dados(PDF) 1 Page - GSI Technology

Nome de Peças GS8320E18GT-150
Descrição Electrónicos  2M x 18, 1M x 32, 1M x 36 36Mb Sync Burst SRAMs
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Fabricante Electrônico  GSI [GSI Technology]
Página de início  http://www.gsitechnology.com
Logo GSI - GSI Technology

GS8320E18GT-150 Folha de dados(HTML) 1 Page - GSI Technology

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Preliminary
GS8320E18/32/36T-xxxV
2M x 18, 1M x 32, 1M x 36
36Mb Sync Burst SRAMs
250 MHz–133 MHz
1.8 V or 2.5 V VDD
1.8 V or 2.5 V I/O
100-Pin TQFP
Commercial Temp
Industrial Temp
Rev: 1.03 6/2006
1/24
© 2001, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Features
• FT pin for user-configurable flow through or pipeline
operation
• Single Dual Cycle Deselect (SDCD) operation
• 1.8 V or 2.5 V core power supply
• 1.8 V or 2.5 V I/O supply
• LBO pin for Linear or Interleaved Burst mode
• Internal input resistors on mode pins allow floating mode pins
• Byte Write (BW) and/or Global Write (GW) operation
• Internal self-timed write cycle
• Automatic power-down for portable applications
• JEDEC-standard 100-lead TQFP package
• RoHS-compliant 100-lead TQFP package available
Functional Description
Applications
The GS8320E18/32/36T-xxxV is a 37,748,736-bit high
performance synchronous SRAM with a 2-bit burst address
counter. Although of a type originally developed for Level 2
Cache applications supporting high performance CPUs, the
device now finds application in synchronous SRAM
applications, ranging from DSP main store to networking chip
set support.
Controls
Addresses, data I/Os, chip enables (E1, E2, E3), address burst
control inputs (ADSP, ADSC, ADV), and write control inputs
(Bx, BW, GW) are synchronous and are controlled by a
positive-edge-triggered clock input (CK). Output enable (G)
and power down control (ZZ) are asynchronous inputs. Burst
cycles can be initiated with either ADSP or ADSC inputs. In
Burst mode, subsequent burst addresses are generated
internally and are controlled by ADV. The burst address
counter may be configured to count in either linear or
interleave order with the Linear Burst Order (LBO) input. The
Burst function need not be used. New addresses can be loaded
on every cycle with no degradation of chip performance.
pin (Pin 14)DCD Pipelined Reads
The GS8320E18/32/36T-xxxV is a DCD (Dual Cycle
Deselect) pipelined synchronous SRAM. SCD (Single Cycle
Deselect) versions are also available. DCD SRAMs pipeline
disable commands to the same degree as read commands. DCD
RAMs hold the deselect command for one full cycle and then
begin turning off their outputs just after the second rising edge
of clock.
Byte Write and Global Write
Byte write operation is performed by using Byte Write enable
(BW) input combined with one or more individual byte write
signals (Bx). In addition, Global Write (GW) is available for
writing all bytes at one time, regardless of the Byte Write
control inputs.
Sleep Mode
Low power (Sleep mode) is attained through the assertion
(High) of the ZZ signal, or by stopping the clock (CK).
Memory data is retained during Sleep mode.
Core and Interface Voltages
The GS8320E18/32/36T-xxxV operates on a 1.8 V or 2.5 V
power supply. All inputs are 1.8 V or 2.5 V compatible.
Separate output power (VDDQ) pins are used to decouple
output noise from the internal circuits and are 1.8 V or 2.5 V
compatible.
Parameter Synopsis
-250 -225 -200 -166 -150 -133 Unit
Pipeline
3-1-1-1
tKQ
tCycle
3.0
4.0
3.0
4.4
3.0
5.0
3.5
6.0
3.8
6.6
4.0
7.5
ns
ns
Curr (x18)
Curr (x32/x36)
285
350
265
320
245
295
220
260
210
240
185
215
mA
mA
Flow
Through
2-1-1-1
tKQ
tCycle
6.5
6.5
7.0
7.0
7.5
7.5
8.0
8.0
8.5
8.5
8.5
8.5
ns
ns
Curr (x18)
Curr (x32/x36)
205
235
195
225
185
210
175
200
165
190
155
175
mA
mA


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