Datasheet

WDOG_CNTL field descriptions
Field Description
7–0
CNTLOW
Low byte of the Watchdog Counter
22.2.5 Watchdog Timeout Value Register: High (WDOG_TOVALH)
This section describes the watchdog timeout value registers: high (TOVALH) and low
(TOVALL) combined. TOVALH:L contains the 16-bit value used to set the timeout
period of the watchdog.
The watchdog counter (CNTH:L) is continuously compared with the timeout value
(TOVALH:L). If the counter reaches the timeout value, the watchdog forces a reset.
NOTE
Do not write 0 to the watchdog timeout value register.
Otherwise, the watchdog always generates a reset.
Address: 3030h base + 4h offset = 3034h
Bit 7 6 5 4 3 2 1 0
Read
TOVALHIGH
Write
Reset
0 0 0 0 0 0 0 0
WDOG_TOVALH field descriptions
Field Description
7–0
TOVALHIGH
High byte of the timeout value
22.2.6 Watchdog Timeout Value Register: Low (WDOG_TOVALL)
See the description of the WDOG_TOVALH register.
NOTE
All the bits reset to 0 in read.
Address: 3030h base + 5h offset = 3035h
Bit 7 6 5 4 3 2 1 0
Read
TOVALLOW
Write
Reset
0 0 0 0 0 1 0 0
Chapter 22 Watchdog (WDOG)
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
Freescale Semiconductor, Inc. 581