mc68hc908mr8 Freescale Semiconductor, Inc, mc68hc908mr8 Datasheet - Page 291

• Manufacturer Part Number: mc68hc908mr8
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Technical Data — MC68HC908MR8
15.1 Contents
15.2 Introduction
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor
Section 15. Computer Operating Properly (COP)
15.2
15.3
15.4
15.4.1
15.4.2
15.4.3
15.4.4
15.4.5
15.4.6
15.5
15.6
15.7
15.8
15.9
15.10 COP Module During Break Mode . . . . . . . . . . . . . . . . . . . .295
This section describes the computer operating properly module (COP,
version B), a free-running counter that generates a reset if allowed to
overflow. The COP module helps software recover from runaway code.
Prevent a COP reset by periodically clearing the COP counter.
COP Control Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Stop Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .291
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . .292
I/O Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Monitor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
Wait Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .295
Computer Operating Properly (COP)
CGMXCLK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
COPCTL Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
Power-On Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
Internal Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Reset Vector Fetch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
COP Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Technical Data
291