CHAPTER 9 WATCHDOG TIMER
9.2 Watchdog Timer Configuration
The watchdog timer includes the following hardware.
Table 9-3. Configuration of Watchdog Timer
Configuration
Item
Control registers
Watchdog timer clock select register (WDCS)
Watchdog timer mode register (WDTM)
Figure 9-1. Block Diagram of Watchdog Timer
Internal bus
f
X
TMMK4
Prescaler
24
f
X
f
X
f
X
26
28
210
INTWDT
Maskable
TMIF4
interrupt request
7-bit counter
Clear
Controller
RESET
INTWDT
Non-maskable
interrupt request
3
TCL22 TCL21 TCL20
RUN WDTM4 WDTM3
Watchdog timer clock select register
(WDCS)
Watchdog timer mode register (WDTM)
Internal bus
User’s Manual U15075EJ1V0UM00
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NEC [ NEC ]
