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BQ3287MT-I PDF预览

BQ3287MT-I

更新时间: 2024-11-28 22:23:07
品牌 Logo 应用领域
德州仪器 - TI 计时器或实时时钟微控制器和处理器
页数 文件大小 规格书
6页 79K
描述
Real-Time Clock RTC Module

BQ3287MT-I 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:ROHS COMPLIANT, PLASTIC, MODULE, DIP-24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8473.30.11.80风险等级:5.8
Samacsys Confidence:Samacsys Status:Released
Samacsys PartID:605337Samacsys Pin Count:24
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Other
Samacsys Footprint Name:DIP254P1524X991-24Samacsys Released Date:2017-01-12 12:59:53
Is Samacsys:N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:-20 °C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:OTHER
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

BQ3287MT-I 数据手册

 浏览型号BQ3287MT-I的Datasheet PDF文件第2页浏览型号BQ3287MT-I的Datasheet PDF文件第3页浏览型号BQ3287MT-I的Datasheet PDF文件第4页浏览型号BQ3287MT-I的Datasheet PDF文件第5页浏览型号BQ3287MT-I的Datasheet PDF文件第6页 
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 µs 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–AD7 Multiplexed address/data  
RST  
SQW  
NC  
Reset input  
input/output  
MOT  
24  
1
V
CC  
Square wave output  
No connect  
MOT  
CS  
Bus type select input  
Chip select input  
NC  
NC  
23  
22  
2
3
SQW  
NC  
4
NC/RCL  
NC  
AD  
AD  
AD  
AD  
AD  
AD  
AD  
21  
20  
19  
18  
17  
16  
15  
14  
13  
0
1
2
3
4
5
6
5
RCL  
RAM clear input  
(bq3287A only)  
AS  
Address strobe input  
Data strobe input  
6
INT  
7
RST  
DS  
NC  
DS  
8
9
VCC  
VSS  
+5V supply  
Ground  
R/W  
INT  
Read/write input  
10  
11  
12  
R/W  
AS  
CS  
AD  
7
Interrupt request output  
V
SS  
24-Pin DIP Module  
PN328701.eps  
Sept. 1996 D  
1

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BQ3287AMT-I TI

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