Watchdog Timer Timing - Hitachi SH7032 Hardware Manual

CK
Ports A–C
(Read)
Ports A–C
(Write)
Figure 20.38 Programmable Timing Pattern Controller Output Timing

(7) Watchdog Timer Timing

Table 20.11 Watchdog Timer Timing
Case A: V = 3.0 to 5.5 V, AV
CC
V = AV
SS SS
Case B: V = 5.0 V ±10%, AV
CC
V = AV
SS SS
Note: * Regular-specification products; for wide-temperature-range products, Ta = –40 to +85°C
Item
WDTOVF delay time
CK
WDTOVF
T
1
t
PRS
= 3.0 to 5.5 V, AV
CC
= 0 V, φ = 12.5 MHz, Ta = –20 to +75°C *
= 5.0 V ±10%, AV
CC
= 0 V, φ = 20 MHz, Ta = –20 to +75°C *
Symbol
t
t
WOVD
Figure 20.39 Watchdog Timer Output Timing
T
2
t
PRH
t
PWD
= V
CC CC
= V
CC CC
Cases A and B
Min
—
WOVD
t
WOVD
T
3
±10%, AV = 3.0 V to AV
ref
±10%, AV = 4.5 V to AV
ref
Max Unit Figure
100 ns 20.39
,
CC
,
CC
511