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MAX802RMJA

更新时间： 2024-11-15 22:23:47
品牌 Logo 应用领域
美信 - MAXIM 微处理器监控
页数 文件大小 规格书
12页 102K
描述
3.0V/3.3V Microprocessor Supervisory Circuits

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MAX802RMJA 数据手册

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19-0243; Rev 1; 9/94  
3 .0 V/3 .3 V Mic ro p ro c e s s o r S u p e rvis o ry Circ u it s  
MAX972,4–806TS/R  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
♦ RESET and RESET Outputs  
♦ Manual Reset Input  
–————–  
These microprocessor (µP) supervisory circuits reduce  
the complexity and number of components required for  
power-supply monitoring and battery-control functions  
in µP systems. They significantly improve system relia-  
b ility a nd a c c ura c y c omp a re d to s e p a ra te ICs or  
discrete components.  
♦ Precision Supply-Voltage Monitor  
♦ 200ms Reset Time Delay  
♦ Watchdog Timer (1.6sec timeout)  
♦ Battery-Backup Power Switching—  
These devices are designed for use in systems powered  
by 3.0V or 3.3V supplies. See the selector guide in the  
back of this data sheet for similar devices designed for  
5V systems. The suffixes denote different reset threshold  
voltages: 3.075V (T), 2.925V (S), and 2.625V (R) (see  
Reset Threshold section in the Detailed Description). All  
these parts are available in 8-pin DIP and SO packages.  
Functions offered in this series are as follows:  
Battery Can Exceed V in Normal Operation  
CC  
♦ 40µA V Supply Current  
CC  
♦ 1µA Battery Supply Current  
♦ Voltage Monitor for Power-Fail or  
Low-Battery Warning  
–————–  
♦ Guaranteed RESET Assertion to V = 1V  
CC  
♦ 8-Pin DIP and SO Packages  
______________Ord e rin g In fo rm a t io n  
PART**  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
8 Plastic DIP  
8 SO  
MAX690_CPA  
MAX690_CSA  
MAX690_C/D  
MAX690_EPA  
MAX690_ESA  
MAX690_MJA  
Part  
0°C to +70°C  
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
MAX690  
MAX704  
MAX802  
MAX804  
MAX805  
MAX806  
±4%  
±4%  
±2%  
±2%  
±4%  
±2%  
±75mV  
±75mV  
±2%  
0°C to +70°C  
Dice*  
✓
✓
-40°C to +85°C  
-40°C to +85°C  
-55°C to +125°C  
8 Plastic DIP  
8 SO  
✓
✓
✓
✓
✓
8 CERDIP  
±2%  
±75mV  
±2%  
Ordering Information continued on last page.  
* Contact factory for dice specifications.  
✓
** These parts offer a choice of reset threshold voltage. Select  
the letter corresponding to the desired nominal reset threshold  
voltage (T = 3.075V, S = 2.925V, R = 2.625V) and insert it into  
the blank to complete the part number.  
________________________Ap p lic a t io n s  
Battery-Powered Computers and Controllers  
Embedded Controllers  
_________Typ ic a l Op e ra t in g Circ u it s  
Intelligent Instruments  
Automotive Systems  
REGULATED +3.3V OR +3.0V  
Critical µP Power Monitoring  
Portable Equipment  
V
CC  
UNREGULATED  
DC  
µP  
0.1µF  
V
CC  
RESET  
(RESET)  
RESET  
__________________P in Co n fig u ra t io n  
R1  
NMI  
PFO  
TOP VIEW  
MAX690T/S/R  
MAX802T/S/R  
MAX804T/S/R  
MAX805T/S/R  
I/O LINE  
GND  
PFI  
WDI  
3.6V  
LITHIUM  
BATTERY  
R2  
1
2
3
4
8
7
6
5
BUS  
V
VBATT  
OUT  
MAX690T/S/R  
MAX704T/S/R  
MAX802T/S/R  
MAX804T/S/R  
MAX805T/S/R  
MAX806T/S/R  
V
OUT  
VBATT  
RESET (RESET)  
WDI <MR>  
PFO  
V
CC  
GND  
V
CC  
CMOS RAM  
GND  
GND  
PFI  
0.1µF  
0.1µF  
DIP/SO  
( ) ARE FOR MAX804T/S/R, MAX805T/S/R  
( ) ARE FOR MAX804T/S/R, MAX805T/S/R  
< > ARE FOR MAX704T/S/R, MAX806T/S/R  
See last page for MAX704T/S/R, MAX806T/S/R.  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
1234567...12

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