MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 172

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Computer Operating Properly (COP)
13.3 Functional Description
Advance Information
172
Addr.
$FFFF
NOTE:
1. See
INTERNAL RESET SOURCES
9.4.2 Active Resets from Internal Sources
RESET VECTOR FETCH
COPD (FROM CONFIG)
STOP INSTRUCTION
COPEN (FROM SIM)
COPCTL WRITE
COPCTL WRITE
COP Control Register
Register Name
CGMXCLK
RESET
COPL
(COPCTL)
(1)
Figure 13-1
Figure 13-2. COP I/O Register Summary
COP MODULE
Reset:
Read:
Write:
Figure 13-1. COP Block Diagram
12-BIT SIM COUNTER
Computer Operating Properly (COP)
Bit 7
shows the structure of the COP module.
.
COP COUNTER
6-BIT COP COUNTER
CLEAR
SIM
6
Writing to $FFFF Clears COP Counter
5
Low Byte of Reset Vector
Unaffected by Reset
4
3
MC68HC708AS48
SIM RESET STATUS REGISTER
SIM RESET CIRCUIT
2
1
MOTOROLA
—
Rev. 4.0
Bit 0