mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 354
mc68hc908sr12
Manufacturer Part Number
mc68hc908sr12
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908SR12.pdf
(404 pages)
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Computer Operating Properly (COP)
21.4.5 Internal Reset
21.4.6 Reset Vector Fetch
21.4.7 COPD (COP Disable)
21.4.8 COPRS (COP Rate Select)
Data Sheet
354
Address:
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
CONFIG1 register. (See
and Mask Option Registers (CONFIG &
The COPRS signal reflects the state of the COP rate select bit (COPRS)
in the CONFIG1 register.
COPRS — COP Rate Select
COPD — COP Disable Bit
Reset:
Read:
Write:
COPRS selects the COP time-out period. Reset clears COPRS.
COPD disables the COP module.
1 = COP time out period = 2
0 = COP time out period = 2
1 = COP module disabled
0 = COP module enabled
* Reset by POR only.
COPRS
$001F
Computer Operating Properly (COP)
Bit 7
Figure 21-2. Configuration Register 1 (CONFIG1)
0
LVISTOP LVIRSTD LVIPWRD LVI5OR3
6
0
Figure 21-2
5
0
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
13
18
4
0
– 2
– 2
and
4
4
ICLK cycles
ICLK cycles
Section 5. Configuration
0*
MOR).)
3
SSREC
Freescale Semiconductor
2
0
STOP
1
0
COPD
Bit 0
0
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