MC68HC705K1 Datasheet, PDF(81/140 Page) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

MC68HC705K1 Datasheet, PDF (81/140 Pages) Freescale Semiconductor, Inc – HCMOS Microcontroller Unit

◁

Freescale Semiconductor, Inc.

Multifunction Timer

COP Watchdog

Table 8-2 summarizes recommended conditions for enabling and

disabling the COP watchdog.

Table 8-2. COP Watchdog Recommendations

Voltage on

IRQ/VPP Pin

SWAIT

Bit(1)

Wait/Halt Time

Recommended

COP Watchdog

Condition

Less than 2 Ã VDD

1

Less than COP timeout period

Enabled(2)

Less than 2 Ã VDD

1

Greater than COP timeout period

Less than 2 Ã VDD

0

X(3)

Disabled

Disabled

More than 2 Ã VDD

X

X

Automatically

disabled

1. The SWAIT bit in the mask option register converts STOP instructions to HALT instruc-

tions.

2. Reset the COP watchdog immediately before executing the WAIT/HALT instruction.

3. X = Donât care

MC68HC705K1 â Rev. 2.0

Multifunction Timer

For More Information On This Product,

Go to: www.freescale.com

Technical Data

▷