Renesas H8/38024 Series, Hardware Manual

Page: 540 / 661

Rev. 6.00, 08/04, page 510 of 628
16.8.9 Watchdog Timer Characteristics
Table 16.33 Watchdog Timer Characteristics
AV
CC
= 2.7 V to 5.5 V, V
SS
= AV
SS
= 0.0 V, unless otherwise specified
Rated Values
Item Symbol
Applicable
Pins
Min Typ Max Unit Note
Test
Condition
On-chip oscillator
overflow time t
OVF
0.2 0.4 — s
*
Note:
*
When the on-chip oscillator is selected, the timer counts from 0 to 255, indicating the time
remaining until an internal reset is generated.
16.9 Operation Timing
Figures 16.1 to 16.6 show timing diagrams.
t , tw
OSC
V
IH
V
IL
t
CPH
t
CPL
t
CPr
OSC1
x
1
t
CPf
Figure 16.1 Clock Input Timing
RES
V
IL
t
REL
Figure 16.2
RES RES RES RES
Low Width