HD6413008VF25 Datasheet, PDF (356/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

11. Watchdog Timer
11.1.2 Block Diagram
Figure 11.1 shows a block diagram of the WDT.
Overflow
Interrupt signal
Interrupt
(interval timer) ^control
TCNT
TCSR
RSTCSR
Reset
(internal, external)
Reset control
Clock
Clock
selector
Legend:
TCNT: Timer counter
TCSR: Timer control/status register
RSTCSR: Reset control/status register
Figure 11.1 WDT Block Diagram
Read/
write
control
Internal
data bus
Internal clock sources
φ/2
φ/32
φ/64
φ/128
φ/256
φ/512
φ/2048
φ/4096
11.1.3 Pin Configuration
Table 11.1 describes the WDT output pin.
Table 11.1 WDT Pin
Name
Abbreviation
Reset output RESO
Note: * Open-drain output.
I/O
Output*
Function
External output of the watchdog timer reset signal
Rev.4.00 Aug. 20, 2007 Page 310 of 638
REJ09B0395-0400