Watchdog Timer Configuration; Block Diagram Of Watchdog Timer; Configuration Of Watchdog Timer - NEC PD789488 User Manual

9.2 Watchdog Timer Configuration

The watchdog timer includes the following hardware.
Item
Control registers Watchdog timer clock selection register (WDCS)
Watchdog timer mode register (WDTM)
f
X
Prescaler
2 4
f f
X X
2 6 2 8
Watchdog timer clock selection register
168
CHAPTER 9 WATCHDOG TIMER
Table 9-3. Configuration of Watchdog Timer
Figure 9-1. Block Diagram of Watchdog Timer
f
X
2 10
7-bit counter
Clear
3
WDCS2 WDCS1 WDCS0
(WDCS)
Internal bus
User's Manual U15331EJ4V1UD
Configuration
Internal bus
WDTMK
WDTIF
Controller
RUN WDTM4 WDTM3
Watchdog timer mode register (WDTM)
INTWDT
Maskable
interrupt request
RESET
INTWDT
Non-maskable
interrupt request