5秒后页面跳转
捷配首页

Datasheet > BQ4285ES
BQ4285ES PDF预览

BQ4285ES

更新时间： 2024-11-12 02:58:27
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
32页 1565K
描述
Enhanced RTC With NVRAM Control

阅读下载

中文翻译

获取价格

BQ4285ES 技术参数

生命周期：Obsolete零件包装代码：SOIC
包装说明：0.300 INCH, PLASTIC, SOIC-24针数：24
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.82
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-PDSO-G24长度：15.43 mm
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：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP24,.4封装形状：RECTANGULAR
封装形式：SMALL OUTLINE电源：5 V
认证状态：Not Qualified座面最大高度：2.67 mm
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：YES技术：CMOS
温度等级：COMMERCIAL端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
最短时间：SECONDS易失性：YES
宽度：7.56 mmuPs/uCs/外围集成电路类型：TIMER, REAL TIME CLOCK

BQ4285ES 数据手册

 浏览型号BQ4285ES的Datasheet PDF文件第2页浏览型号BQ4285ES的Datasheet PDF文件第3页浏览型号BQ4285ES的Datasheet PDF文件第4页浏览型号BQ4285ES的Datasheet PDF文件第5页浏览型号BQ4285ES的Datasheet PDF文件第6页浏览型号BQ4285ES的Datasheet PDF文件第7页 
bq4285E/L  
Enhanced RTC With NVRAM Control  
➤ BCD or binary format for clock  
General Description  
and calendar data  
Features  
➤ Direct clock/calendar replace-  
ment for IBM® AT-compatible  
computers and other applications  
The CMOS bq4285E/L is a low-power  
microprocessor peripheral providing a  
time-of-day clock and 100-year calen-  
dar with alarm features and battery  
operation. Other features include  
three maskable interrupt sources,  
square wave output, and 114 bytes of  
general nonvolatile storage.  
➤ Calendar in day of the week, day  
of the month, months, and years,  
with automatic leap-year adjust-  
ment  
➤ 114 bytes of general nonvolatile  
storage  
➤ Time of day in seconds, minutes,  
and hours  
➤ Enhanced features include:  
- 12- or 24-hour format  
- System wake-up capability—  
alarm interrupt output active  
in battery-backup mode  
- Optional daylight saving  
A 32.768kHz output is available for  
sustaining power-management activi-  
ties. Wake-up capability is provided by  
an alarm interrupt, which is active in  
battery-backup mode.  
adjustment  
- 2.7–3.6V operation (bq4285L);  
➤ Programmable square wave out-  
4.5–5.5V operation (bq4285E)  
put  
- 32kHz output for power  
➤ Three individually maskable in-  
The bq4285E/L write-protects the  
clock, calendar, and storage registers  
during power failure. A backup bat-  
tery then maintains data and oper-  
ates the clock and calendar.  
management  
terrupt event flags:  
➤ Automatic backup and write-  
- Periodic rates from 122µs to  
protect control to external SRAM  
500ms  
➤ Functionally compatible with the  
- Time-of-day alarm once per  
DS1285  
second to once per day  
The bq4285E/L is a fully compatible  
real-time clock for IBM AT-  
compatible computers and other ap-  
plications. The only external compo-  
nents are a 32.768kHz crystal and a  
backup battery.  
- End-of-clock update cycle  
➤ 24-pin plastic DIP or SOIC  
➤ Less than 0.5 µA load under bat-  
tery operation  
The bq4285E/L integrates  
battery-backup controller to make a  
a
➤ 14 bytes for clock/calendar and  
control  
Pin Names  
Pin Connections  
AD0–AD7 Multiplexed address/data  
input/output  
MOT  
Bus type select input  
V
24  
1
V
CC  
OUT  
X
1
23  
22  
2
3
SQW  
CE  
CS  
AS  
DS  
R/W  
INT  
RST  
SQW  
BC  
X1–X2  
NC  
Chip select input  
Address strobe input  
Data strobe input  
Read/write input  
Interrupt request output  
Reset input  
Square wave output  
3V backup cell input  
Crystal inputs  
X
2
OUT  
4
CE  
AD  
0
21  
20  
19  
18  
17  
16  
15  
14  
13  
IN  
5
BC  
AD  
1
AD  
2
AD  
3
AD  
4
AD  
5
AD  
6
6
INT  
RST  
DS  
V
SS  
R/W  
7
8
9
10  
11  
12  
AS  
CS  
AD  
7
No connect  
V
SS  
CEIN  
CEOUT  
VOUT  
VCC  
RAM chip enable input  
RAM chip enable output  
Supply output  
28-Pin PLCC: No Longer Available  
24-Pin DIP or SOIC  
PN428501.eps  
+5V supply  
SLUS006A - MAY 1994 - REVISED MAY 2004  
1
1234567...32

中文翻译

下载PDF

与BQ4285ES相关器件

型号 品牌 获取价格 描述 数据表
BQ4285L TI

获取价格

 		Enhanced RTC With NVRAM Control
BQ4285LP TI

获取价格

 		Enhanced RTC With NVRAM Control
BQ4285LQ ETC

获取价格
BQ4285LQN TI

获取价格

 		1 TIMER(S), REAL TIME CLOCK, PQCC28, PLASTIC, LCC-28
BQ4285LS TI

获取价格

 		Enhanced RTC With NVRAM Control
BQ4285LSN TI

获取价格

 		1 TIMER(S), REAL TIME CLOCK, PDSO24, 0.300 INCH, PLASTIC, SOIC-24
BQ4285LSNTR TI

获取价格

 		IC 1 TIMER(S), REAL TIME CLOCK, PDSO24, 0.300 INCH, PLASTIC, SOIC-24, Timer or RTC
BQ4285LSTR TI

获取价格

 		Enhanced RTC With NVRAM Control
BQ4285P- TI

获取价格

 		Real-Time Clock RTC With NVRAM Control
BQ4285P-SB2 TI

获取价格

 		Real-Time Clock RTC With NVRAM Control

与BQ4285ES相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证