参数资料
型号: M68HC05M68H
厂商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件页数: 34/130页
文件大小: 1541K
代理商: M68HC05M68H
Memory
Advance Information
MC68HC705P6A
Rev. 2.0
34
Memory
MOTOROLA
2.8 Mask Option Register
The mask option register (MOR) is a pair of EPROM bytes located at
$1EFF and $1F00. It controls the programmable options on the
MC68HC705P6A. See
Section 11. Mask Option Register (MOR)
for
additional information.
2.9 Computer Operating Properly (COP) Clear Register
The computer operating properly (COP) watchdog timer is located at
address $1FF0. Writing a logical 0 to bit zero of this location will clear the
COP watchdog counter as described in
4.4.2 Computer Operating
Properly (COP) Reset
.
$1EFF
Bit 7
6
5
4
3
2
1
Bit 0
Read:
PA7PU
PA6PU
PA5PU
PA4PU
PA3PU
PA2PU
PA1PU
PA0PU
Write:
Erased State:
0
0
0
0
0
0
0
0
$1F00
Bit 7
6
5
4
3
2
1
Bit 0
Read:
SECURE
SWAIT
SPR1
SPR0
LSBF
LEVEL
COP
Write:
Erased State:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 2-4. Mask Option Register (MOR)
$1FF0
Bit 7
6
5
4
3
2
1
Bit 0
Read:
0
0
0
0
0
0
0
0
Write:
COPR
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 2-5. COP Watchdog Timer Location
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