MC68HC908GR8A Datasheet, PDF (80/252 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. 2
80
Freescale Semiconductor