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BQ3287LDMT

更新时间： 2024-11-29 13:05:59

品牌	Logo	应用领域
德州仪器 - TI		时钟
页数	文件大小	规格书
9页	305K
描述
0 TIMER(S), REAL TIME CLOCK, DMA24, MODULE, DIP-24

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中文翻译

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技术参数
数据手册

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BQ3287LDMT 技术参数

生命周期：	Obsolete	零件包装代码：	DMA
包装说明：	,	针数：	24
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.83
外部数据总线宽度：	8	信息访问方法：	PARALLEL, MUXED BUS
JESD-30 代码：	R-XDMA-T24	端子数量：	24
计时器数量：		最高工作温度：	70 °C
最低工作温度：		封装主体材料：	UNSPECIFIED
封装形状：	RECTANGULAR	封装形式：	MICROELECTRONIC ASSEMBLY
认证状态：	Not Qualified	最大供电电压：	5.5 V
最小供电电压：	2.7 V	标称供电电压：	3 V
表面贴装：	NO	技术：	CMOS
温度等级：	COMMERCIAL	端子形式：	THROUGH-HOLE
端子位置：	DUAL	uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK
Base Number Matches：	1

BQ3287LDMT 数据手册

Not Recommended For New Designs

bq3287/bq3287A

(

)

Real-Time Clock RTC Module

➤ Calendar in day of the week, day

of the month, months, and years

with automatic leap-year adjust-

ment

bq3287A version is identical to the

bq3287, with the addition of the RAM

clear input.

Features

➤ Dir ect clock/ca len da r r epla ce-

m en t for IBM^®AT-com pa t ible

computers and other applications

The bq3287 is a fully compatible

r e a l-t im e clock for I B M AT-

compatible computers and other ap-

p lica t ion s . T h e b q 3 2 8 7 w r it e -

pr ot ect s t h e clock, ca len da r, a n d

storage registers during power fail-

u r e. Th e in t egr a l ba cku p en er gy

source then maintains data and op-

erates the clock and calendar.

➤ Programmable square wave out-

➤ Functionally compatible with the

put

DS1287/DS1287A and MC146818A

➤ Three individually maskable in-

➤ 114 bytes of general nonvolatile

terrupt event flags:

storage

- ^{Periodic rates from 122}^µ^{s to}

➤ Integral lithium cell and crystal

500 ms

➤ 160 ns cycle time allows fast bus

As shipped from Benchma rq, the

real time clock is turned off to maxi-

mize battery capacity for in-system

operation.

- ^{Time-of-day alarm once per}

operation

second to once per day

➤ Selectable Intel or Motorola bus

timing

- ^{End-of-clock update cycle}

➤ B e t t e r t h a n on e m in u t e p e r

➤ 14 bytes for clock/calendar and

The bq3287 is functionally equiva-

lent to the bq3285, except that the

battery (16, 20) and crystal (2, 3)

pins are not accessible. These pins

are connected internally to a coin

cell and quartz crystal. The coin cell

is sized to provide 10 years of data

retention and clock operation in the

absence of power. For a complete de-

scription of features, operating con-

dit ion s, elect r ica l ch a r a ct er ist ics,

bus timing, and pin descriptions, see

the bq3285 data sheet.

control

month clock accuracy

➤ BCD or binary format for clock

and calendar data

General Description

➤ Time of day in seconds, minutes,

Th e CMOS bq3287/bq3287A is a

low-power microprocessor periph-

eral providing a time-of-day clock

and 100-year calendar with alarm

fea t u r es a n d ba t t er y oper a t ion .

O t h e r fe a t u r e s in clu d e t h r e e

maskable interrupt sources, square-

wave output, and 114 bytes of gen-

e r a l n on vola t ile s t or a ge. Th e

and hours

- ^{12- or 24-hour format}

- Optional daylight saving

adjustment

Pin Connections

Pin Names

AD₀–AD₇Multiplexed address/data

RST

SQW

Reset input

input/output

MOT

Square wave output

No connect

MOT

Bus type select input

Chip select input

SQW

NC/RCL

RCL

RAM clear input

(bq3287A only)

Address strobe input

Data strobe input

INT

RST

V_CC

V_SS

+5V supply

Ground

R/W

INT

Read/write input

R/W

Interrupt request output

24-Pin DIP Module

PN328701.eps

Sept. 1996 D

12 3 4 5 6 7...9

中文翻译

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与BQ3287LDMT相关器件

型号	品牌	获取价格	描述	数据表
BQ3287MT	TI	获取价格	1 TIMER(S), REAL TIME CLOCK, PDIP24
BQ3287MT-	TI	获取价格	Real-Time Clock RTC Module
BQ3287MT-I	TI	获取价格	Real-Time Clock RTC Module
BQ3287MT-K	TI	获取价格	1 TIMER(S), REAL TIME CLOCK, DMA24, MODULE, DIP-24
BQ3287MT-SB2	TI	获取价格	Real-Time Clock RTC Module
BQ-3303301%	VISHAY	获取价格	General Purpose Inductor, 330uH, 1%, 1 Element, Ferrite-Core
BQ-33033010%	VISHAY	获取价格	General Purpose Inductor, 330uH, 10%, 1 Element, Ferrite-Core
BQ-3303303%	VISHAY	获取价格	General Purpose Inductor, 330uH, 3%, 1 Element, Ferrite-Core
BQ-3303305%	VISHAY	获取价格	General Purpose Inductor, 330uH, 5%, 1 Element, Ferrite-Core
BQ33100	TI	获取价格	Super Capacitor Manager Capacitance Learning ESR Measurement

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