Datasheet > BQ4024MA-120

BQ4024MA-120

更新时间： 2024-11-11 06:44:15

品牌	Logo	应用领域
其他 - ETC		内存集成电路静态存储器光电二极管
页数	文件大小	规格书
12页	433K
描述
128Kx16 Nonvolatile SRAM

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中文翻译

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数据手册

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BQ4024MA-120 数据手册

bq4024/bq4024Y

128Kx16 Nonvolatile SRAM

At t h is t im e t h e in t egr a l en er gy

source is switched on to sustain the

memory until after V_CCreturns valid.

Features

➤ Data retention in the absence of

General Description

The CMOS bq4024 is a nonvolatile

2,097,152-bit static RAM organized

as 131,072 words by 16 bits. The

integral control circuitry and lith-

ium energy source provide reliable

nonvolatility coupled with the un-

lim it ed wr it e cycles of st a n da r d

SRAM.

power

Th e bq4024 u ses ext r em ely low

standby current CMOS SRAMs, cou-

pled with small lithium coin cells to

provide nonvolatility without long

write-cycle times and the write-cycle

limitations associated with EEPROM.

➤ Automatic write-protection dur-

ing power-up/power-down cycles

➤ Industry-standard 40-pin 128K x

16 pinout

➤ Conventional SRAM operation;

The bq4024 requires no external cir-

cuitry and is compatible with the

industry-standard 2Mb SRAM pin-

out.

Th e con t r ol cir cu it r y con st a n t ly

monitors the single 5V supply for

a n ou t -of-t ole r a n ce con d it ion .

When V_CCfalls out of tolerance, the

SRAM is u n con dit ion a lly wr it e-

protected to prevent an inadvertent

write operation.

unlimited write cycles

➤ 10-year minimum data retention

in absence of power

➤ Battery internally isolated until

power is applied

Pin Connections

Pin Names

Block Diagram

A₀–A₁₆

Address inputs

DQ₀–DQ₁₅Data input/output

Chip enable input

Output enable input

Write enable input

No connect

V_CC

V_SS

+5 volt supply input

Ground

40-Pin DIP Module

PN402401.eps

Selection Guide

Maximum

Access

Negative

Supply

Maximum

Access

Negative

Supply

Part

Number

Time (ns)

Tolerance

Number

Time (ns)

Tolerance

bq4024MA -85

bq4024MA -120

-5%

bq4024YMA -85

bq4024YMA -120

-10%

120

Sept. 1992

12 3 4 5 6 7...12

中文翻译

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