Watchdog Timer Enable Flag (Wdtm); Format Of Watchdog Timer Enable Flag (Wdtm) - NEC PD754144 User Manual

6.3.3 Watchdog timer enable flag (WDTM)

WDTM is a flag that enables assertion of the reset signal when an overflow occurs.
This flag is set by a bit manipulation instruction. Once this flag has been set, it cannot be cleared by an instruction.
Example To set watchdog timer function
SEL MB15
SET1 WDTM
•
•
•
SET1 BTM.3
The contents of this flag are cleared to 0 when the RESET signal is asserted.
Figure 6-22. Format of Watchdog Timer Enable Flag (WDTM)
Address
F8BH.3
CHAPTER 6 PERIPHERAL HARDWARE FUNCTION
; or CLR1 MBE
; Sets bit 3 of BTM to "1"
WDTM
BT mode
0
Sets IRQBT when basic interval timer (BT) overflows
WT mode
1 Asserts internal reset signal when basic interval timer
(BT) overflows
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