mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 179

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

14.4.7 COPS (COP Short Timeout)
14.5 COP Control Register
14.6 Interrupts
14.7 Monitor Mode
MC68HC08QA24
Freescale Semiconductor
Address: $FFFF
The COPS bit selects the state of the COP short timeout bit (COPS) in
the MOR ($001F). Timeout periods can be (2
CGMXCLK cycles. (See
The COP control register is located at address $FFFF and overlaps the
reset vector. Writing any value to $FFFF clears the COP counter and
starts a new timeout period. Reading location $FFFF returns the low
byte of the reset vector.
The COP does not generate CPU interrupt requests.
The COP is disabled in monitor mode when V
Electrical
Reset:
Read:
Write:
Computer Operating Properly (COP)
Bit 7
Figure 14-2. COP Control Register (COPCTL)
Characteristics) is present on the IRQ pin or on the RST pin.
6
5.4 Mask Option
5
Low byte of reset vector
Unaffected by reset
Clear COP counter
4
Computer Operating Properly (COP)
3
Register.)
18
DD
–2
+ V
4
2
) or (2
HI
(see
13
1
Technical Data
–2
23.5 DC
4
)
Bit 0
177