MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 192

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Clock Functions
COPRST — Arm/Reset COP Timer Register
Technical Data
192
RESET:
Bit 7
Bit 7
0
6
6
0
Always reads $00.
Writing $55 to this address is the first step of the COP watchdog
sequence.
Writing $AA to this address is the second step of the COP watchdog
sequence. Other instructions may be executed between these writes
but both must be completed in the correct order prior to time-out to
avoid a watchdog reset. Writing anything other than $55 or $AA
causes a COP reset to occur.
5
5
0
Clock Functions
4
4
0
3
3
0
2
2
0
MC68HC912DT128A — Rev 4.0
1
1
0
Bit 0
Bit 0
0
MOTOROLA
$0017