MC68HC908GR8A_07 Datasheet, PDF (82/260 Pages) Freescale Semiconductor, Inc – Microcontrollers

Computer Operating Properly (COP) Module
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 disabled, execution of a STOP instruction results in an illegal opcode reset.
6.8 COP Module During Break Mode
The COP is disabled during a break interrupt when V_TST is present on the RST pin.
MC68HC908GR8A • MC68HC908GR4A Data Sheet, Rev. 5
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Freescale Semiconductor