MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 162
MC68HC908KX2
Manufacturer Part Number
MC68HC908KX2
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908KX2.pdf
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Computer Operating Properly Module (COP)
11.5.2 STOP Instruction
11.5.3 COPCTL Write
11.5.4 Power-On Reset
11.5.5 Internal Reset
11.5.6 Reset Vector Fetch
11.5.7 COPD (COP Disable)
11.5.8 COPRS (COP Rate Select)
Technical Data
162
The STOP instruction clears the COP prescaler.
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.
The power-on reset (POR) circuit clears the COP prescaler 4096
CGMXCLK cycles after power-up.
An internal reset clears the COP prescaler and the COP counter.
A reset vector fetch occurs when the vector address appears on the data
bus. A reset vector fetch clears the COP prescaler.
The COPD signal reflects the state of the COP disable bit (COPD) in the
configuration register. See
(CONFIG).
The COPRS signal reflects the state of the COP rate select bit (COPRS)
in the configuration register. See
(CONFIG).
Computer Operating Properly Module (COP)
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
Section 9. Configuration Register
Section 9. Configuration Register
MOTOROLA
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