MC68HC912D60 Datasheet, PDF (179/432 Pages) Freescale Semiconductor, Inc – M68HC12 Microcontrollers

Clock Functions
Freescale Semiconductor, Inc.
Bit 7
6
5
4
3
2
1
Bit 0
Bit 7
6
5
4
3
2
1
Bit 0
RESET:
0
0
0
0
0
0
0
0
COPRST — Arm/Reset COP Timer Register
$0017
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.
Advance Information
179
Clock Functions
For More Information On This Product,
Go to: www.freescale.com
68HC(9)12D60 — Rev 4.0
MOTOROLA