UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 399

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

watchdog timer (start the count) within a given period are inserted at various places in a program.
a watchdog timer interrupt (INTWDT) is generated and a program error is reported.
12.1 CONFIGURATION
The watchdog timer is a timer that detects inadvertent program loops.
Watchdog timer interrupts are used to detect system or program errors. For this purpose, instructions that clear the
If an instruction that clears the watchdog timer is not executed within the set time and the watchdog timer overflows,
The watchdog timer block diagram is shown in Figure 12-1.
f
CLK
CHAPTER 12 WATCHDOG TIMER FUNCTION
Clear Signal
Figure 12-1 Watchdog Timer Block Diagram
Watchdog Timer
f
f
f
f
CLK
CLK
CLK
CLK
/2
/2
/2
/2
21
20
19
17
Selector
INTWDT
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