- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄173638 > GS832472GC-250T (GSI TECHNOLOGY) 512K X 72 CACHE SRAM, 6 ns, PBGA209 PDF資料下載
參數(shù)資料
| 型號： | GS832472GC-250T |
| 廠商： | GSI TECHNOLOGY |
| 元件分類： | SRAM |
| 英文描述： | 512K X 72 CACHE SRAM, 6 ns, PBGA209 |
| 封裝： | 14 X 22 MM, 1 MM PITCH, BGA-209 |
| 文件頁數(shù)： | 1/46頁 |
| 文件大?。?/td> | 1126K |
| 代理商： | GS832472GC-250T |
當前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁
Rev: 1.00 10/2001
1/46
2001, Giga Semiconductor, Inc.
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
ByteSafe is a Trademark of Giga Semiconductor, Inc. (GSI Technology).
Preliminary
GS832418(B/C)/GS832436(B/C)/GS832472(C)
2M x 18, 1M x 36, 512K x 72
36Mb S/DCD Sync Burst SRAMs
250 MHz–133MHz
2.5 V or 3.3 V VDD
2.5 V or 3.3 V I/O
119- and 209-Pin BGA
Commercial Temp
Industrial Temp
Features
FT pin for user-configurable flow through or pipeline operation
Single/Dual Cycle Deselect selectable (x36 and x72)
Dual Cycle Deselect only (x18)
IEEE 1149.1 JTAG-compatible Boundary Scan
ZQ mode pin for user-selectable high/low output drive
2.5 V or 3.3 V +10%/–5% 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
Default to SCD x36/x72 Interleaved Pipeline mode
Byte Write (BW) and/or Global Write (GW) operation
Internal self-timed write cycle
Automatic power-down for portable applications
JEDEC-standard 119- and 209-bump BGA package
Functional Description
Applications
The GS832418/36/72 is a 37,748,736-bit high performance 2-die
synchronous SRAM module 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 . 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 and DCD Pipelined Reads
The GS832436(B/C) and the GS832472(C) are SCD (Single
Cycle Deselect) and DCD (Dual Cycle Deselect) pipelined
synchronous SRAMs. The GS832418(B/C) is a DCD-only
SRAM. DCD SRAMs pipeline disable commands to the same
degree as read commands. 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. 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. The user
may configure the x36 or x72 versions of this SRAM for either
mode of operation using the SCD mode input.
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.
FLXDrive
The ZQ pin allows selection between high drive strength (ZQ low)
for multi-drop bus applications and normal drive strength (ZQ
floating or high) point-to-point applications. See the Output Driver
Characteristics chart for details.
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 GS832418/36/72 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.
-250 -225 -200 -166 -150 -133 Unit
Pipeline
3-1-1-1
tKQ
tCycle
2.3
4.0
2.5
4.4
3.0
5.0
3.5
6.0
3.8
6.6
4.0
7.5
ns
3.3 V
Curr (x18)
Curr (x36)
Curr (x72)
365
560
660
335
510
600
305
460
540
265
400
460
245
370
430
215
330
380
mA
2.5 V
Curr (x18)
Curr (x36)
Curr (x72)
360
550
640
330
500
590
305
460
530
260
390
450
240
360
420
215
330
370
mA
Flow
Through
2-1-1-1
tKQ
tCycle
6.0
7.0
6.5
7.5
8.5
10
11
15
ns
3.3 V
Curr (x18)
Curr (x36)
Curr (x72)
235
300
350
230
300
350
210
270
300
200
270
300
195
270
300
150
200
220
mA
2.5 V
Curr (x18)
Curr (x36)
Curr (x72)
235
300
340
230
300
340
210
270
300
200
270
300
195
270
300
145
190
220
mA
相關PDF資料 |
PDF描述 |
|---|---|
| GS8342D08E-333T | 4M X 8 STANDARD SRAM, 0.45 ns, PBGA165 |
| GS8342Q08AE-278 | 4M X 8 DDR SRAM, 0.45 ns, PBGA165 |
| GS84018AB-190 | 256K X 18 CACHE SRAM, 7.5 ns, PBGA119 |
| GS840E18AGT-150T | 256K X 18 CACHE SRAM, 10 ns, PQFP100 |
| GS840E18AT-166IT | 256K X 18 CACHE SRAM, 8.5 ns, PQFP100 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| GS8324Z36B-133 | 制造商:GSI Technology 功能描述:SRAM SYNC QUAD 2.5V/3.3V 36MBIT 1MX36 10NS/4NS 119FBGA - Trays |
| GS8324Z36B-200I | 制造商:GSI Technology 功能描述:SRAM SYNC QUAD 2.5V/3.3V 36MBIT 1MX36 7.5NS/3NS 119FBGA - Trays |
| GS8324Z72C200 | 制造商:G.S.I. 功能描述: |
| GS8342D06BD-350 | 制造商:GSI Technology 功能描述:165 FBGA - Bulk |
| GS8342D06BD-500 | 制造商:GSI Technology 功能描述:165 FBGA - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。