Datasheet > BQ4014_08

BQ4014_08

更新时间： 2024-12-01 03:22:27

品牌	Logo	应用领域
德州仪器 - TI		静态存储器
页数	文件大小	规格书
13页	803K
描述
256Kx8 Nonvolatile SRAM

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中文翻译

获取价格

数据手册

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BQ4014_08 数据手册

bq4014/bq4014Y

256Kx8 Nonvolatile SRAM

source is switched on to sustain the

Features

➤ Data retention in the absence of

General Description

m em or y u n t il a ft er V_CCr et ur ns

valid.

The CMOS bq4014 is a nonvolatile

2,097,152-bit static RAM organized as

262,144 words by 8 bits. The integral

control circuitry and lithium energy

source provide reliable nonvolatility

coupled with the un limited wr ite

cycles of standard SRAM.

power

Th e bq4014 u ses ext r em ely low

s t a n dby cu r r en t CMOS SRAMs,

cou pled wit h sm a ll lit h iu m coin

cells to provide nonvolatility without

long write-cycle times and the write-

cycle lim it a tion s a ssocia ted with

EEPROM.

➤ Automatic write-protection

during power-up/power-down

cycles

➤ Industry-standard 32-pin 256K x

8 pinout

Th e con tr ol cir cu it r y con s ta n t ly

monitors the single 5V supply for an

out-of-toler an ce condition. When

V_CCfalls out of tolerance, the SRAM

is unconditionally write-protected to

prevent inadvertent write operation.

At t his tim e t he integr a l ener gy

➤ Conventional SRAM operation;

The bq4014 requires no external cir-

cuitr y and is compatible with the

in d u s t r y-s t a n da r d 2Mb SRAM

pinout.

unlimited write cycles

➤ 10-year minimum data retention

in absence of power

➤ Battery internally isolated until

power is applied

Pin Names

Block Diagram

Pin Connections

A₀–A₁₇

Address inputs

DQ₀–DQ₇Data input/output

Chip enable input

Output enable input

Write enable input

No connect

V_CC

V_SS

+5 volt supply input

Ground

Selection Guide

Maximum

Access

Negative

Supply

Maximum

Access

Negative

Supply

Part

Number

Time (ns)

Tolerance

Number

Time (ns)

Tolerance

bq4014 -85

bq4014Y -85

bq4014Y -120

-5%

-10%

bq4014 -120

120

Sept. 1992

12 3 4 5 6 7...13

中文翻译

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与BQ4014_08相关器件

型号	品牌	获取价格	描述	数据表
BQ4014MB-120	TI	获取价格	256Kx8 Nonvolatile SRAM
BQ4014MB-85	TI	获取价格	256Kx8 Nonvolatile SRAM
BQ4014Y	TI	获取价格	256Kx8 Nonvolatile SRAM
BQ4014YMA-120	TI	获取价格	256KX8 NON-VOLATILE SRAM MODULE, 120ns, DMA32, MODULE, DIP-32
BQ4014YMA-85	TI	获取价格	256KX8 NON-VOLATILE SRAM MODULE, 85ns, DMA32, MODULE, DIP-32
BQ4014YMB-120	TI	获取价格	256Kx8 Nonvolatile SRAM
BQ4014YMB-85	TI	获取价格	256Kx8 Nonvolatile SRAM
BQ4015	TI	获取价格	512Kx8 Nonvolatile SRAM
BQ4015_07	TI	获取价格	512Kx8 Nonvolatile SRAM
BQ4015LYMA-70	TI	获取价格	Texas Instruments BQ4015LYMA-70