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MAX820

更新时间: 2024-01-11 15:37:40
品牌 Logo 应用领域
美信 - MAXIM 存储微处理器监控
页数 文件大小 规格书
16页 250K
描述
Microprocessor and Non-Volatile Memory Supervisory Circuits

MAX820 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:DIP
包装说明:CERAMIC, DIP-16针数:16
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.15
其他特性:RESET THRESHOLD VOLTAGE IS 3.06V; MANUAL RESET INPUT可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY MANAGEMENT CIRCUITJESD-30 代码:R-GDIP-T16
JESD-609代码:e0湿度敏感等级:1
信道数量:1功能数量:1
端子数量:16最高工作温度:125 °C
最低工作温度:-55 °C封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DIP封装等效代码:DIP16,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):245电源:3.3 V
认证状态:Not Qualified座面最大高度:5.08 mm
子类别:Power Management Circuits最大供电电流 (Isup):0.15 mA
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):2.75 V
标称供电电压 (Vsup):5 V表面贴装:NO
技术:CMOS温度等级:MILITARY
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:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.62 mm
Base Number Matches:1

MAX820 数据手册

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19-0147; Rev. 2; 6/98  
Mic ro p ro c e s s o r a n d No n -Vo la t ile  
Me m o ry S u p e rvis o ry Circ u it s  
79/MAX820  
Ge n e ra l De s c rip t io n  
Fe a t u re s  
The MAX792/MAX820 microprocessor (µP) supervisory  
circuits provide the most functions for power-supply  
and watchdog monitoring in systems without battery  
backup. Built-in features include the following:  
Manual-Reset Input  
200ms Power-OK/Reset Time Delay  
Independent Watchdog Timer—Preset or Adjustable  
On-Board Gating of Chip-Enable Signals  
Memory Write-Cycle Completion  
1) µP reset: Assertion of RESET and RESET outputs dur-  
ing power-up, power-down, and brownout condi-  
tions. RESET is guaranteed valid for VCC down to 1V.  
10ns (max) Chip-Enable Gate Propagation Delay  
Voltage Monitor for Overvoltage Warning  
2) Manual-reset input.  
3) Two-stage power-fail warning: A separate low-line  
comparator compares VCC to a preset threshold  
120mV above the reset threshold; the low-line and  
reset thresholds can be programmed externally.  
±2% Reset and Low-Line Threshold Accuracy  
(MAX820, external programming mode)  
Ord e rin g In fo rm a t io n  
4) Watchdog fault output: Assertion of WDO if the watch-  
dog input is not toggled within a preset timeout  
period.  
PART**  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
PIN-PACKAGE  
16 Plastic DIP  
16 Narrow SO  
Dice*  
MAX792_CPE  
MAX792_CSE  
MAX792_C/D  
5) Puls e d wa tc hd og outp ut: Ad va nc e wa rning of  
impending WDO assertion from watchdog timeout  
that causes hardware shutdown.  
Ordering Information continued at end of data sheet.  
* Dice are tested at T = +25°C, DC parameters only.  
6) Write protection of CMOS RAM, EEPROM, or other  
memory devices.  
A
**These parts offer a choice of five different reset threshold volt-  
ages. Select the letter corresponding to the desired nominal  
reset threshold voltage and insert it into the blank to complete the  
part number.  
The MAX792 and MAX820 are identical, except the  
MAX820 guarantees higher low-line and reset threshold  
accuracy (±2%).  
SUFFIX  
RESET THRESHOLD (V)  
Ap p lic a t io n s  
Computers  
Controllers  
L
M
T
S
R
4.62  
4.37  
3.06  
2.91  
2.61  
Intelligent Instruments  
Critical µP Power Monitoring  
Typ ic a l Op e ra t in g Circ u it  
V
CC  
0.1µF  
3
V
V
CC  
CC  
13  
14  
CE OUT  
4
5
RESET IN/INT  
µP  
RAM  
MAX792  
ADDRESS  
DECODER  
CE IN  
OVO  
LLIN/  
REFOUT  
A0-A15  
6
10  
1
LOW LINE  
RESET  
MR  
NMI  
7
8
OVI  
RESET  
9
SWT  
GND  
12  
GND  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  

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