MC68HC908KX8 Datasheet, PDF (162/310 Pages) Motorola, Inc – Microcontrollers

Computer Operating Properly Module (COP)
11.5.2 STOP Instruction
The STOP instruction clears the COP prescaler.
11.5.3 COPCTL Write
Writing any value to the COP control register (COPCTL) clears the COP
counter and clears stages 12–5 of the COP prescaler. Reading the COP
control register returns the low byte of the reset vector.
11.5.4 Power-On Reset
The power-on reset (POR) circuit clears the COP prescaler 4096
CGMXCLK cycles after power-up.
11.5.5 Internal Reset
An internal reset clears the COP prescaler and the COP counter.
11.5.6 Reset Vector Fetch
A reset vector fetch occurs when the vector address appears on the data
bus. A reset vector fetch clears the COP prescaler.
11.5.7 COPD (COP Disable)
The COPD signal reflects the state of the COP disable bit (COPD) in the
configuration register. See Section 9. Configuration Register
(CONFIG).
11.5.8 COPRS (COP Rate Select)
The COPRS signal reflects the state of the COP rate select bit (COPRS)
in the configuration register. See Section 9. Configuration Register
(CONFIG).
Technical Data
162
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
Computer Operating Properly Module (COP)
MOTOROLA