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参数资料
| 型号： | GS816118AGT-200IT |
| 厂商： | GSI TECHNOLOGY |
| 元件分类： | SRAM |
| 英文描述： | 1M X 18 CACHE SRAM, 6.5 ns, PQFP100 |
| 封装： | TQFP-100 |
| 文件页数： | 1/34页 |
| 文件大小： | 703K |
| 代理商： | GS816118AGT-200IT |
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Rev: 1.03a 45/2003
1/34
2001, Giga Semiconductor, Inc.
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
GS816118A(T/D)/GS816132A(D)/GS816136A(T/D)
1M x 18, 512K x 32, 512K x 36
18Mb Sync Burst SRAMs
300 MHz–150 MHz
2.5 V or 3.3 V VDD
2.5 V or 3.3 V I/O
100-Pin TQFP & 165-Bump BGA
Commercial Temp
Industrial Temp
Preliminary
Features
IEEE 1149.1 JTAG-compatible Boundary Scan
2.5 V or 3.3 V +10%/–10% core power supply
2.5 V or 3.3 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-pin TQFP and 165-bump BGA packages
Functional Description
Applications
The GS816118A(T/D)/GS816132A(D)/GS816136A(T/D) is an
18,874,368-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 enable (E1), 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.
Flow Through/Pipeline Reads
The function of the Data Output register can be controlled by the
user via the FT mode pin (Pin 14). Holding the FT mode pin low
places the RAM in Flow Through mode, causing output data to
bypass the Data Output Register. Holding FT high places the RAM
in Pipeline mode, activating the rising-edge-triggered Data Output
Register.
SCD Pipelined Reads
The GS816118A(T/D)/GS816132A(D)/GS816136A(T/D) is a
SCD (Single Cycle Deselect) pipelined synchronous SRAM. DCD
(Dual Cycle Deselect) versions are also available. SCD SRAMs
pipeline deselect commands one stage less than read commands.
SCD RAMs begin turning off their outputs immediately after the
deselect command has been captured in the input registers.
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 GS816118A(T/D)/GS816132A(D)/GS816136A(T/D)
operates on a 2.5 V or 3.3 V power supply. All input are 3.3 V and
2.5 V compatible. Separate output power (VDDQ) pins are used to
decouple output noise from the internal circuits and are 3.3 V and
2.5 V compatible.
Parameter Synopsis
-300
-250
-200
-150
Unit
Pipeline
3-1-1-1
tKQ(x18/x36)
tCycle
2.5
3.3
2.5
4.0
3.0
5.0
3.8
6.7
ns
Curr (x18)
Curr (x32/x36)
335
390
280
330
230
270
185
210
mA
Flow Through
2-1-1-1
tKQ
tCycle
5.0
5.5
6.5
7.5
ns
Curr (x18)
Curr (x32/x36)
230
270
210
240
185
205
170
190
mA
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相关代理商/技术参数 |
参数描述 |
|---|---|
| GS816118BD-150 | 制造商:GSI Technology 功能描述:SRAM SYNC DUAL 2.5V/3.3V 18MBIT 1MX18 7.5NS/3.8NS 165FBGA - Trays |
| GS816118BD-150I | 制造商:GSI Technology 功能描述:SRAM SYNC DUAL 2.5V/3.3V 18MBIT 1MX18 7.5NS/3.8NS 165FBGA - Trays |
| GS816118BD-150IV | 制造商:GSI Technology 功能描述:SRAM SYNC DUAL 1.8V/2.5V 18MBIT 1MX18 7.5NS/3.8NS 165FPBGA - Trays |
| GS816118BD-150V | 制造商:GSI Technology 功能描述:SRAM SYNC DUAL 1.8V/2.5V 18MBIT 1MX18 7.5NS/3.8NS 165FPBGA - Trays |
| GS816118BD-200 | 制造商:GSI Technology 功能描述:SRAM SYNC DUAL 2.5V/3.3V 18MBIT 1MX18 6.5NS/3NS 165FBGA - Trays |
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