MC68HC705J1A

Manufacturer Part NumberMC68HC705J1A
ManufacturerMotorola
MC68HC705J1A datasheet
 


Specifications of MC68HC705J1A

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Technical Data — MC68HC705J1A
Section 7. Computer Operating Properly (COP) Module
7.1 Contents
7.2
7.3
7.3.1
7.3.2
7.3.3
7.4
7.5
7.6
7.6.1
7.6.2
7.2 Introduction
The computer operating properly (COP) watchdog resets the
microcontroller (MCU) in case of software failure. Software that is
operating properly periodically services the COP watchdog and prevents
COP reset. The COP watchdog function is programmable by the
COPEN bit in the mask option register.
Features include:
MC68HC705J1A — Rev. 4.0
MOTOROLA
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
COP Watchdog Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
COP Watchdog Timeout Period . . . . . . . . . . . . . . . . . . . . . . 98
Clearing the COP Watchdog . . . . . . . . . . . . . . . . . . . . . . . .98
Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
COP Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Low-Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Protection from runaway software
Wait and halt mode operation
Computer Operating Properly (COP) Module
Technical Data
97