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TC70

更新时间： 2024-02-23 08:39:45
品牌 Logo 应用领域
TELCOM 电池监视器监控
页数 文件大小 规格书
7页 88K
描述
MICROMASTER - SYSTEM SUPERVISOR WITH POWER SUPPLY MONITOR, WATCHDOG AND BATTERY BACKUP

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中文翻译

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TC70 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：PLASTIC, DIP-8Reach Compliance Code：unknown
风险等级：5.74Is Samacsys：N
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：R-PDIP-T8JESD-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
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
认证状态：Not Qualified子类别：Power Management Circuits
最大供电电流 (Isup)：6.5 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：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
Base Number Matches：1

TC70 数据手册

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5
TC70/71  
MICROMASTER™ – SYSTEM SUPERVISOR WITH POWER SUPPLY  
MONITOR, WATCHDOG AND BATTERY BACKUP  
FEATURES  
GENERAL DESCRIPTION  
■ Maximum Functional Integration: Precision Power  
Supply Monitor, Watchdog Timer, External RESET  
Override, Threshold Detector and Battery Backup  
Controller in an 8-Pin Package  
■ Generates Power-on RESET and Guards Against  
Unstable Processor Operation Resulting from  
Power "Brown-out"  
■ Automatically Halts and Restarts an Out-of-  
Control Microprocessor  
■ Output Can be Wire-ORed, or Hooked to Manual  
RESET Pushbutton Switch  
■ Watchdog Disable Pin for Easier Prototyping  
(TC70)  
■ Voltage Monitor for Power Fail or Low Battery  
Warning (TC71)  
■ Available in 8-Pin Plastic DIP or 8-Pin SOIC  
Packages  
■ Cost Effective  
The TC70/71 is a fully-integrated power supply monitor,  
watchdog and battery backup circuit in a space-saving  
8-pin package.  
When power is initially applied, the TC70/71 holds the  
processor in its reset state for a minimum of 500msec after  
VCC is in tolerance to ensure stable system start-up. After  
start-up, processor sanity is monitored by the on-board  
watchdog circuit. The processor must provide periodic high-  
to-low level transitions to the TC70/71 to verify proper  
execution. Should the processor fail to supply this signal  
withinthespecifiedtimeoutperiod, anout-of-controlproces-  
sor is indicated and the TC70/71 issues a momentary  
processor reset as a result. The TC70 also features a  
watchdog disable pin to facilitate system test and debug.  
The output of the TC70/71 can be wire-ORed to a push-  
button switch (or electronic signal) to reset the processor.  
When connected to a push-button switch, the TC70/71  
provides contact debounce.  
Theintegratedbatterybackupcircuiton-boardtheTC70/  
71 converts CMOS RAM into nonvolatile memory by first  
write-protecting, thenswitchingtheVCC lineoftheRAMover  
to an external battery.  
The TC71 incorporates an additional 1.3V threshold  
detector for power fail warning, low battery detection or to  
monitor power supply voltages other than +5V.  
TYPICAL APPLICATIONS  
■ All Microprocessor-based Systems  
■ Test Equipment  
■ Instrumentation  
■ Set-Top Boxes  
FUNCTIONAL BLOCK DIAGRAM  
ORDERING INFORMATION  
V
CC  
V
CCO  
Part No.  
Package  
Temp. Range  
BATTERY  
BACK-UP  
CONTROL  
CEO  
(TC70)  
CEI  
(TC70)  
T
C70COA  
8-Pin SOIC  
0°C to +70°C  
0°C to +70°C  
PF  
(TC71)  
TC70CPA  
TC70EOA  
TC70EPA  
8-Pin Plastic DIP  
8-Pin SOIC  
V
BATT  
– 40°C to +85°C  
– 40°C to +85°C  
0°C to +70°C  
8-Pin Plastic DIP  
8-Pin SOIC  
T
C71COA  
V
REF1  
TC71CPA  
TC71EOA  
TC71EPA  
8-Pin Plastic DIP  
8-Pin SOIC  
0°C to +70°C  
WATCHDOG  
TIMER  
∆V  
WDD  
(TC70)  
– 40°C to +85°C  
– 40°C to +85°C  
DETECTOR  
8-Pin Plastic DIP  
RS  
V
REF2  
PIN CONFIGURATIONS (DIP and SOIC)  
DELAY  
TIMER  
V
V
V
1
2
3
4
1
2
3
4
V
8
7
BATT  
CCO  
8
7
CCO  
BATT  
GND  
V
V
RS  
CC  
RS  
CC  
V
REF3  
TC71  
TC70  
PF  
GND  
CEI  
6
5
6
5
GND  
TDI  
WDD  
CEO  
TDO  
(TC71)  
TDI  
(TC71)  
TDO  
TC70/71  
TC70/71-1 11/18/96  
TELCOM SEMICONDUCTOR, INC.  
5-7  
1234567

中文翻译

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