HD6432633 Datasheet, PDF (726/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

15.1.2 Block Diagram
Figure 15-1 (a) and 15-1 (b) show a block diagram of the WDT.
WOVI 0
(interrupt request
signal)
WDTOVF
Internal reset signal*
Interrupt
control
Reset
control
Overflow
Clock
Clock
select
ø/2
ø/64
ø/128
ø/512
ø/2048
ø/8192
ø/32768
ø/131072
Internal clock
sources
RSTCSR
TCNT
TSCR
Module bus
Bus
interface
WDT
Legend
TCSR : Timer control/status register
TCNT : Timer counter
RSTCSR : Reset control/status register
Note: * The type of internal reset signal depends on a register setting.
There are two alternative types of reset, namely power-on reset and manual reset.
Figure 15-1 (a) Block Diagram of WDT0
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