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

7.2 Watchdog Timer Configuration

The watchdog timer consists of the following hardware.
Item
Control register
f
X
Prescaler
2 4
f f f
X X
2 6 2 8 2
Timer clock select register 2
(TCL2)
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CHAPTER 7
Table 7-3. Configuration of Watchdog Timer
Timer clock select register 2 (TCL2)
Watchdog timer mode register (WDTM)
Figure 7-1. Block Diagram of Watchdog Timer
X
10
7-bit counter
Clear
3
TCL22 TCL21 TCL20 RUN
Internal bus
User's Manual U12978EJ3V0UD
WATCHDOG TIMER
Configuration
Internal bus
TMMK4
TMIF4
Controller
WDTM4 WDTM3
Watchdog timer mode register (WDTM)
INTWDT
maskable
interrupt request
RESET
INTWDT
non-maskable
interrupt request