MC68HC705 MOTOROLA [Motorola, Inc], MC68HC705 Datasheet - Page 116

• Manufacturer Part Number: MC68HC705
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

EPROM/OTPROM (PROM)
9.5.3 Mask Option Register 2
Technical Data
116
NOTE:
Address:
PBPU0/COPC programmed to a 1 enables the port B pullup bit. This bit
is also used to clear the non-programmable COP (MC68HC05C4A
type). Writing to this bit to clear the COP will not affect the state of the
port B pull-up (bit 0). See
Non-Programmable COP Watchdog
When using the MC68HC705C8A in an MC68HC705C8 or
MC68HSC705C8 application, program locations $1FF0 and $1FF1 to
$00.
Mask option register 2 (MOR2) shown in
register that enables the non-programmable COP watchdog. Data from
MOR2 is latched on the rising edge of the voltage on the RESET pin.
See
Resets.
NCOPE — Non-Programmable COP Watchdog Enable Bit
Erased:
Reset:
Read:
Write:
This EPROM bit enables the non-programmable COP watchdog.
5.3.3 Programmable and Non-Programmable COP Watchdog
1 = Non-programmable COP watchdog enabled
0 = Non-programmable COP watchdog disabled
$1FF1
Bit 7
0
Figure 9-6. Mask Option Register 2 (MOR2)
EPROM/OTPROM (PROM)
= Unimplemented
6
0
5.3.3 Programmable and
5
0
Unaffected by reset
4
0
Resets.
Figure 9-6
3
0
MC68HC705C8A — Rev. 2.0
2
0
is an EPROM
1
0
MOTOROLA
NCOPE
Bit 0
0