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DS1312 PDF预览

DS1312

更新时间: 2024-11-14 22:40:35
品牌 Logo 应用领域
达拉斯 - DALLAS 电池光电二极管监控控制器
页数 文件大小 规格书
11页 204K
描述
Nonvolatile Controller with Lithium Battery Monitor

DS1312 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:0.300 INCH, DIP-8Reach Compliance Code:unknown
风险等级:5.66可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDIP-T8
JESD-609代码:e0信道数量:1
功能数量:1端子数量:8
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:DIP
封装等效代码:DIP8,.3封装形状:RECTANGULAR
封装形式:IN-LINE电源:5 V
认证状态:Not Qualified子类别:Power Management Circuits
最大供电电流 (Isup):0.1 mA最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):4.5 V标称供电电压 (Vsup):5 V
表面贴装:NO技术:CMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUALBase Number Matches:1

DS1312 数据手册

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DS1312  
Nonvolatile Controller with Lithium  
Battery Monitor  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Converts CMOS SRAM into nonvolatile  
memory  
VCCO  
VBAT  
TOL  
GND  
1
2
3
4
8
7
6
5
VCCI  
BW  
VCCO  
VBAT  
TOL  
GND  
1
2
3
4
8
7
6
5
VCCI  
BW  
Unconditionally write-protects SRAM when  
CEO  
CEI  
CEO  
CEI  
VCC is out of tolerance  
Automatically switches to battery backup  
supply when VCC power failure occurs  
Monitors voltage of a lithium cell and  
provides advanced warning of impending  
battery failure  
DS1312 8-Pin DIP  
(300-mil)  
DS1312S-2 8-Pin SOIC  
(150-mil)  
NC  
VCCO  
NC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
NC  
NC  
VCCO  
NC  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
NC  
VCCI  
RST  
NC  
VCCI  
RST  
NC  
Signals low-battery condition on active low  
Battery Warning output signal  
VBAT  
NC  
VBAT  
NC  
16  
NC  
BW  
CEO  
NC  
Optional -5% or -10% power-fail detection  
Space-saving 8-pin DIP and SOIC packages  
Optional 16-pin SOIC and 20-pin TSSOP  
versions reset processor when power failure  
occurs and hold processor in reset during  
system power-up  
NC  
BW  
NC  
TOL  
NC  
15  
14  
13  
12  
11  
TOL  
NC  
CEO  
NC  
GND  
CEI  
NC  
DS1312S 16-Pin SOIC  
(300-mil)  
GND  
CEI  
DS1312E 20-Pin TSSOP  
Industrial temperature range of -40°C to  
+85°C  
PIN DESCRIPTION  
VCCI  
VCCO  
VBAT  
- +5V Power Supply Input  
- SRAM Power Supply Output  
- Backup Battery Input  
CEI  
- Chip Enable Input  
CEO  
TOL  
- Chip Enable Output  
- VCC Tolerance Select  
BW  
- Battery Warning Output  
(Open Drain)  
RST  
GND  
NC  
- Reset Output (Open Drain)  
- Ground  
- No Connection  
DESCRIPTION  
The DS1312 Nonvolatile Controller with Battery Monitor is a CMOS circuit which solves the application  
problem of converting CMOS RAM into nonvolatile memory. Incoming power is monitored for an out-  
of-tolerance condition. When such a condition is detected, chip enable is inhibited to accomplish write  
protection and the battery is switched on to supply the RAM with uninterrupted power. Special circuitry  
uses a low-leakage CMOS process which affords precise voltage detection at extremely low battery  
consumption.  
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