Datasheet > GVT1256DA18B-6

GVT1256DA18B-6

更新时间： 2024-10-28 23:54:15

品牌	Logo	应用领域
其他 - ETC		静态存储器
页数	文件大小	规格书
24页	294K
描述
x18 Fast Synchronous SRAM

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中文翻译

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数据手册

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GVT1256DA18B-6 数据手册

CY7C1347C/GVT71128DA36

CY7C1327C/GVT71256DA18

256K x 18/128K x 36 Synchronous-Pipelined

Cache RAM

The CY7C1347C/GVT71128DA36 and CYC7C1327C/

GVT71256DA18 SRAMs integrate 131,072x36 and

262,144x18 SRAM cells with advanced synchronous periph-

Features

• Fast access times: 2.5 and 3.5 ns

eral circuitry and a 2-bit counter for internal burst operation. All

synchronous inputs are gated by registers controlled by a pos-

itive-edge-triggered clock input (CLK). The synchronous in-

puts include all addresses, all data inputs, address-pipelining

Chip Enable (CE), depth-expansion Chip Enables (CE2 and

CE2), Burst Control Inputs (ADSC, ADSP, and ADV), Write

Enables (BWa, BWb, BWc, BWd, and BWE), and Global Write

(GW).

• Fast clock speed: 250, 225, 200, and 166 MHz

• 1-ns set-up time and hold time

• Fast OE access times: 2.5 ns and 3.5 ns

• Optimal for depth expansion (one cycle chip deselect

to eliminate bus contention)

• 3.3V –5% and +10% power supply

• 3.3V or 2.5V I/O supply

• 5V tolerant inputs except I/Os

Asynchronous inputs include the Output Enable (OE) and

Burst Mode Control (MODE). The data outputs (Q), enabled

by OE, are also asynchronous.

• Clamp diodes to V at all inputs and outputs

• Common data inputs and data outputs

Addresses and chip enables are registered with either Ad-

dress Status Processor (ADSP) or Address Status Controller

(ADSC) input pins. Subsequent burst addresses can be inter-

nally generated as controlled by the Burst Advance pin (ADV).

• Byte Write Enable and Global Write control

• Three chip enables for depth expansion and address

pipeline

• Address, data, and control registers

• Internally self-timed Write Cycle

• Burst control pins (interleaved or linear burst se-

quence)

• Automatic power-down for portable applications

• JTAG boundary scan

• JEDEC standard pinout

• Low profile 119-lead, 14-mm x 22-mm BGA (Ball Grid

Array) and 100-pin TQFP packages

Address, data inputs, and write controls are registered on-chip

to initiate self-timed Write cycle. Write cycles can be one to

four bytes wide as controlled by the write control inputs. Indi-

vidual byte write allows individual byte to be written. BWa con-

trols DQa. BWb controls DQb. BWc controls DQc. BWd con-

trols DQd. BWa, BWb, BWc, and BWd can be active only with

BWE being LOW. GW being LOW causes all bytes to be writ-

ten. The x18 version only has 18 data inputs/outputs (DQa and

DQb) along with BWa and BWb (no BWc, BWd, DQc, and

DQd).

Functional Description

Four pins are used to implement JTAG test capabilities: Test

Mode Select (TMS), Test Data-in (TDI), Test Clock (TCK), and

Test Data-out (TDO). The JTAG circuitry is used to serially shift

data to and from the device. JTAG inputs use LVTTL/LVCMOS

levels to shift data during this testing mode of operation.

The Cypress Synchronous Burst SRAM family employs

high-speed, low-power CMOS designs using advanced tri-

ple-layer polysilicon, double-layer metal technology. Each

memory cell consists of four transistors and two high-valued

resistors.

The

CY7C1347C/GVT71128DA36

and

CY7C1327C/

GVT71256DA18 operate from a +3.3V power supply. All inputs

and outputs are LVTTL compatible

Selection Guide

7C1347C-250

7C1347C-225

71128DA36-4.4

7C1327C-225

71256DA18-4.4

7C1347C-200

71128DA36-5

7C1327C-200

71256DA18-5

7C1347C-166

71128DA36-6

7C1327C-166

71256DA18-6

71128DA36-4

7C1327C-250

71256DA18-4

Maximum Access Time (ns)

2.5

450

2.5

400

2.5

360

3.5

300

Maximum Operating Current (mA)

Maximum CMOS Standby Current (mA)

Cypress Semiconductor Corporation

•

3901 North First Street

•

San Jose

•

CA 95134

•

408-943-2600

July 21, 2000

12 3 4 5 6 7...24

中文翻译

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与GVT1256DA18B-6相关器件

型号	品牌	获取价格	描述	数据表
GVT1256DA18T-4	ETC	获取价格	x18 Fast Synchronous SRAM
GVT1256DA18T-4.4	ETC	获取价格	x18 Fast Synchronous SRAM
GVT1256DA18T-5	ETC	获取价格	x18 Fast Synchronous SRAM
GVT1256DA18T-6	ETC	获取价格	x18 Fast Synchronous SRAM
GVT-2000	LevelOne	获取价格	10/100/1000BASE-T to 1000BASE-X SFP Converter
GVT-2001	LevelOne	获取价格	10/100/1000BASE-T to 1000BASE-SX MMF SC Converter, 550m
GVT-417B	GWINSTEK	获取价格	AC MILLIVOLT METER
GVT-427B	GWINSTEK	获取价格	AC MILLIVOLT METER
GVT71128C32T-6	CYPRESS	获取价格	Standard SRAM, 128KX32, 6ns, CMOS, PQFP100, 14 X 20 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-100
GVT71128C32T-6I	CYPRESS	获取价格	Standard SRAM, 128KX32, 6ns, CMOS, PQFP100, 14 X 20 MM, 1.40 MM HEIGHT, PLASTIC, TQFP-100

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