MC68HC908MR8 Datasheet, PDF (292/372 Pages) Motorola, Inc – Microcontrollers

Computer Operating Properly (COP)
15.3 Functional Description
Figure 15-1 shows the structure of the COP module.
CGMXCLK
SIM
13-BIT SIM COUNTER
SIM RESET CIRCUIT
SIM RESET STATUS REGISTER
INTERNAL RESET SOURCES(1)
RESET VECTOR FETCH
COPCTL WRITE
COPD (FROM CONFIG)
RESET
COPCTL WRITE
COP MODULE
6-BIT COP COUNTER
CLEAR
COP COUNTER
Note: See 7.4.2 Active Resets from Internal Sources.
Figure 15-1. COP Block Diagram
Addr.
$FFFF
Register Name
Bit 7 6
5
4
3
2
Read
:
COP Control Register
(COPCTL)
Write:
See page 294.
Reset
:
Low byte of reset vector
Clear COP counter
Unaffected by reset
Figure 15-2. COP I/O Register Summary
1 Bit 0
Technical Data
292
Computer Operating Properly (COP)
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor