mc68hc908ap8a Freescale Semiconductor, Inc, mc68hc908ap8a Datasheet - Page 284
mc68hc908ap8a
Manufacturer Part Number
mc68hc908ap8a
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908AP8A.pdf
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Computer Operating Properly (COP)
19.7.1 Wait Mode
The COP remains active during wait mode. To prevent a COP reset during wait mode, periodically clear
the COP counter in a CPU interrupt routine.
19.7.2 Stop Mode
Stop mode turns off the ICLK input to the COP and clears the COP prescaler. Service the COP
immediately before entering or after exiting stop mode to ensure a full COP timeout period after entering
or exiting stop mode.
To prevent inadvertently turning off the COP with a STOP instruction, a configuration option is available
that disables the STOP instruction. When the STOP bit in the configuration register has the STOP
instruction is disabled, execution of a STOP instruction results in an illegal opcode reset.
19.8 COP Module During Break Mode
The COP is disabled during a break interrupt when V
is present on the RST pin.
TST
MC68HC908AP A-Family Data Sheet, Rev. 3
284
Freescale Semiconductor
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