Watchdog Timer Characteristics; Operation Timing - Renesas H8 Series Hardware Manual

16.8.9

Watchdog Timer Characteristics

Table 16.33 Watchdog Timer Characteristics
AV = 2.7 V to 5.5 V, V
CC
Item
On-chip oscillator
overflow time
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.
V
IH
OSC1
x
V
1
IL
= AV = 0.0 V, unless otherwise specified
SS SS
Applicable
Symbol Pins
t
OVF
t , tw
OSC
t t
CPH
t t
CPr CPf
Figure 16.1 Clock Input Timing
Section 16 Electrical Characteristics
Rated Values
Min Typ Max
0.2 0.4 —
CPL
Rev. 7.00 Mar 10, 2005 page 529 of 652
Test
Unit Note Condition
s V = 5 V
*
CC
REJ09B0042-0700