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BQ3287EMT

更新时间： 2024-11-28 21:54:55
品牌 Logo 应用领域
德州仪器 - TI 外围集成电路光电二极管时钟
页数 文件大小 规格书
7页 95K
描述
Real-Time Clock RTC Module

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中文翻译

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BQ3287EMT 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete包装说明：DIP, DIP24,.6
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.78
最大时钟频率：0.032 MHz外部数据总线宽度：8
信息访问方法：PARALLEL, MUXED BUS中断能力：Y
JESD-30 代码：R-XDMA-T24端子数量：24
计时器数量：1最高工作温度：70 °C
最低工作温度：封装主体材料：UNSPECIFIED
封装代码：DIP封装等效代码：DIP24,.6
封装形状：RECTANGULAR封装形式：MICROELECTRONIC ASSEMBLY
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
认证状态：Not Qualified子类别：Timer or RTC
最大供电电压：5.5 V最小供电电压：4.5 V
标称供电电压：5 V表面贴装：NO
技术：CMOS温度等级：COMMERCIAL
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL最短时间：SECONDS
处于峰值回流温度下的最长时间：NOT SPECIFIED易失性：NO
uPs/uCs/外围集成电路类型：TIMER, REAL TIME CLOCKBase Number Matches：1

BQ3287EMT 数据手册

 浏览型号BQ3287EMT的Datasheet PDF文件第2页浏览型号BQ3287EMT的Datasheet PDF文件第3页浏览型号BQ3287EMT的Datasheet PDF文件第4页浏览型号BQ3287EMT的Datasheet PDF文件第5页浏览型号BQ3287EMT的Datasheet PDF文件第6页浏览型号BQ3287EMT的Datasheet PDF文件第7页 
bq3287E/bq3287EA  
(
)
Real-Time Clock RTC Module  
vided by an alarm interrupt, which is  
➤ Calendar in day of the week, day  
active in battery-backup mode. The  
of the month, months, and years  
bq3287EA version is identical to the  
with automatic leap-year adjust-  
bq3287E, with the addition of the  
ment  
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  
RAM clear input.  
➤ Programmable square wave out-  
The bq3287E is a fully compatible  
put  
➤ F u n ct ion a lly com pa t ible wit h  
t h e D S 1 2 8 7 /D S 1 2 8 7 A a n d  
MC146818A/ MC146818B  
real-time clock for IBM AT-compatible  
computers and other applications. The  
➤ Three individually maskable in-  
bq3287E write-protects the clock, cal-  
endar, and storage registers during  
power failure. The integral backup en-  
ergy source then maintains data and  
operates the clock and calendar.  
terrupt event flags:  
➤ 242 bytes of general nonvolatile  
storage  
- Periodic rates from 122µs to  
500ms  
➤ Provides a 32.768kHz output for  
power management  
- Time-of-day alarm once per  
As shipped from Benchma rq, the  
real time clock is turned off to maxi-  
mize battery capacity for in-system  
operation.  
➤ System wake-up capability—  
a la r m in t e r r u p t a ct ive in  
battery-backup mode  
second to once per day  
- 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  
➤ Integral lithium cell and crystal  
The bq3287E is functionally equiva-  
lent to the bq3285E, except the bat-  
tery (16,20) and crystal pins (2,3)  
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 re-  
tention 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 bq3285E data sheet.  
month clock accuracy  
➤ 160 ns cycle time allows fast bus  
operation  
General Description  
➤ 14 bytes for clock/calendar and  
control  
The CMOS bq3287E/bq3287EA 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 242 bytes of gen-  
➤ Time of day in seconds, minutes,  
and hours  
- 12- or 24-hour format  
- Optional daylight saving  
adjustment  
e r a l n on vola t ile s t or a ge.  
A
32.768kHz output is available for  
sustaining power-management ac-  
tivities. Wake-up capability is pro-  
Pin Connections  
Pin Names  
AD0–AD7 Multiplex address/data  
RST  
Reset input  
MOT  
24  
input/output  
1
V
CC  
NC  
NC  
23  
22  
2
3
SQW  
EXTRAM  
SQW  
Square wave output  
MOT  
4
NC/RCL  
NC  
AD  
0
AD  
1
AD  
2
AD  
3
AD  
4
AD  
5
AD  
6
21  
20  
19  
18  
17  
16  
15  
14  
13  
EXTRAM Extended RAM enable  
5
CS  
Chip select input  
6
INT  
NC  
No connect  
7
RST  
DS  
NC  
AS  
Address strobe input  
Data strobe input  
8
9
RCL  
RAM clear input  
(bq3287EA only)  
DS  
10  
11  
12  
R/W  
AS  
CS  
AD  
7
R/W  
INT  
Read/write input  
V
SS  
VCC  
VSS  
+5V supply  
Ground  
24-Pin DIP Module  
Interrupt request output  
PN3287E1.eps  
Sept. 1996 C  
1
1234567

中文翻译

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BQ3287EMT 替代型号

型号 品牌 替代类型 描述 数据表
BQ3287AMT-SB2 TI

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 Real-Time Clock (RTC) Module
BQ3287AMT-I TI

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 Real-Time Clock RTC Module
BQ3287MT-I TI

类似代替

 Real-Time Clock RTC Module

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BQ3287LDMT TI

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 		0 TIMER(S), REAL TIME CLOCK, DMA24, MODULE, DIP-24
BQ3287MT TI

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 		1 TIMER(S), REAL TIME CLOCK, PDIP24
BQ3287MT- TI

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 		Real-Time Clock RTC Module
BQ3287MT-I TI

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 		Real-Time Clock RTC Module
BQ3287MT-K TI

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BQ3287MT-SB2 TI

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 		Real-Time Clock RTC Module
BQ-3303301% VISHAY

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 		General Purpose Inductor, 330uH, 1%, 1 Element, Ferrite-Core
BQ-33033010% VISHAY

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 		General Purpose Inductor, 330uH, 10%, 1 Element, Ferrite-Core
BQ-3303303% VISHAY

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 		General Purpose Inductor, 330uH, 3%, 1 Element, Ferrite-Core
BQ-3303305% VISHAY

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 		General Purpose Inductor, 330uH, 5%, 1 Element, Ferrite-Core

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