Datasheet > AS7C251MPFS18A-200TQI

AS7C251MPFS18A-200TQI

更新时间： 2024-11-30 19:50:31

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美国芯成 - ISSI		/
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21页	410K
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AS7C251MPFS18A-200TQI 数据手册

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December 2002

Advance Information

AS7C251MPFS18A

2.5V 1M x 18 pipelined burst synchronous SRAM

Features

• Organization: 1,048,576 x18 bits

• Asynchronous output enable control

• Fast clock speeds to 250MHz in LVTTL/ LVCMOS

• Fast clock to data access: 2.6/ 2.8/ 3/ 3.4 ns

• Fast OEaccess time: 2.6/ 2.8/ 3/ 3.4 ns

• Fully synchronous register-to-register operation

• Single register flow-through mode

• Available 100-pin TQFP and 165-ball BGA packages

• Byte write enables

• Multiple chip enables for easy expansion

• 2.5V core power supply

• NTD™ pipelined architecture available (AS7C251MNTD18A,

AS7C25512NTD32A/ AS7C25512NTD36A)

• Single-cycle deselect

Logic block diagram

LBO

CLK

ADV

CLK

CLR

ADSC

ADSP

Burst logic

20 18

1M ꢀ 18

Memory

array

Addres^Qs

A[19:0]

CLK

GWE

DQb

Byte Write

registers

BWE

CLK

DQa

Byte Write

CLK

registers

CE0

CE1

CE2

^DEnable^Q

Input

Output

registers

CLK

^DEnable^Q

Power

down

delay

CLK

DQ[a,b]

Selection guide

-250

-225

-200

-166

Units

Minimum cycle time

4.4

225

2.8

400

110

Maximum clock frequency

250

2.6

425

110

200

3.0

370

110

166

3.4

340

MHz

Maximum pipelined clock access time

Maximum operating current

Maximum standby current

Maximum CMOS standby current (DC)

12/ 2/ 02, v. 0.9.2 Advance Info

Alliance Semiconductor

1 of 21

12 3 4 5 6 7...21

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与AS7C251MPFS18A-200TQI相关器件

型号	品牌	获取价格	描述	数据表
AS7C251MPFS18A-225BC	ISSI	获取价格	Standard SRAM, 1MX18, 6.9ns, CMOS, PBGA165, BGA-165
AS7C251MPFS18A-225BI	ISSI	获取价格	Standard SRAM, 1MX18, 6.9ns, CMOS, PBGA165, BGA-165
AS7C251MPFS18A-225TQC	ISSI	获取价格	Standard SRAM, 1MX18, 6.9ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100
AS7C251MPFS18A-225TQI	ISSI	获取价格	Standard SRAM, 1MX18, 6.9ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100
AS7C251MPFS18A-250BC	ISSI	获取价格	Standard SRAM, 1MX18, 6.5ns, CMOS, PBGA165, BGA-165
AS7C251MPFS18A-250TQC	ISSI	获取价格	Standard SRAM, 1MX18, 6.5ns, CMOS, PQFP100, 14 X 20 MM, TQFP-100
AS7C251MPFS32A	ALSC	获取价格	2.5V 1M x 32/36 pipelined burst synchronous SRAM
AS7C251MPFS32A-133BIN	ALSC	获取价格	Standard SRAM, 1MX32, 10ns, CMOS, PBGA165, LEAD FREE, BGA-165
AS7C251MPFS32A-133TQC	ALSC	获取价格	2.5V 1M x 32/36 pipelined burst synchronous SRAM
AS7C251MPFS32A-133TQCN	ALSC	获取价格	2.5V 1M x 32/36 pipelined burst synchronous SRAM