參數(shù)資料
型號: COP800
英文描述: COP800 Based Automated Security/Monitoring System(137.88 k)
中文描述: 基于自動(dòng)安全/監(jiān)測系統(tǒng)(137.88畝COP800)
文件頁數(shù): 1/8頁
文件大?。?/td> 137K
代理商: COP800
TLDD10607
COP800
Based
Automated
SecurityMonitoring
System
AN-662
National Semiconductor
Application Note 662
Ramesh Sivakolundu
March 1991
COP800 Based Automated
SecurityMonitoring
System
INTRODUCTION
National Semiconductor’s COP800 family of full-feature
cost effective fully static single chip micro CMOS micro-
controllers provide efficient system solutions with a versatile
instruction set and high functionality The heart of the ASM
System prototype is a COP800 family member with at least
the following features 4k bytes of on-board program memo-
ry 192 bytes of on-board data memory memory mapped
IO fourteen multi-sourced vectored interrupts and a versa-
tile instruction set
The family member used is the
COP888CG microcontroller
This application note describes the implementation of a Se-
curityMonitoring System using the COP888CG microcon-
troller The COP888CG contains features such as
Low power HALT and IDLE modes
MICROWIREPLUSTM serial communication
Multiple multi-mode general purpose timers
Multi-input wakeupinterrupt
WATCHDOGTM and Clock monitor
Maskable vectored interrupt scheme
UART
In addition to these features common to the COP888 sub-
family of microcontrollers COP888CG has a full duplex
double buffered UART and two Differential Comparators
The COP888CG based Automated SecurityMonitoring
(ASM) System consists of several features
Automatic Telephone Dialing
Real Time Clock
Non-Volatile storage of real time information of events
Continuous display of events on the terminal
Battery operated remote sensors and transmitters
Exit and Entry delays
Expandable to add new features
SYSTEM OVERVIEW
Figure 1 gives the block diagram of the ASM System proto-
type hardware The application consists of following major
blocks
Central Controlling Unit
Receiver
Sensors and Transmitters
Keypad Unit
Auto-Dialer Unit
Data Storage Unit
Display Terminal Unit
LED Display Unit
The implementation allows easy expansion of the ASM Sys-
tem features by adding new blocks to the Central Control-
ling Unit
COP888CG is the workhorse of the ASM System and pro-
vides the processing power to scan the keypad service the
Receiver interrupts update the real time clock serially com-
municate with the LED display unit and Data Storage Unit
activate the Auto-Dialer Unit and use the full-duplex double
buffered UART to interface with the Display Terminal Unit
System capabilities may be enhanced or scaled down by
simply changing the processor’s algorithm The subsequent
sections describe each of the units and their interface with
the COP888CG
TLDD10607 – 1
FIGURE 1 Block Diagram of SecurityMonitoring System
MICROWIREPLUSTM and WATCHDOGTM are trademarks of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75Printed in U S A
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