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10
Data Sheet
STC803/809/810-811/812/-823/824/825-6342/6343/6344/6345
µµµµµP Supervisor Circuits
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
STC
Ver1.0
AC Electrical Characteristics
Table 5. AC Electrical Characteristics
m
y
Sm
y
S m
y
S m
y
Sm
y
Sn
o
i
t
p
i
r
c
s
e
Dn
o
i
t
p
i
r
c
s
e
D
n
o
i
t
p
i
r
c
s
e
D
n
o
i
t
p
i
r
c
s
e
Dn
o
i
t
p
i
r
c
s
e
Ds
n
o
i
t
i
d
n
o
C
t
s
e
Ts
n
o
i
t
i
d
n
o
C
t
s
e
T
s
n
o
i
t
i
d
n
o
C
t
s
e
T
s
n
o
i
t
i
d
n
o
C
t
s
e
Ts
n
o
i
t
i
d
n
o
C
t
s
e
Tn
i
Mn
i
M n
i
M n
i
Mn
i
Mp
y
Tp
y
T p
y
T p
y
Tp
y
Tx
a
Mx
a
M x
a
M x
a
Mx
a
Ms
t
i
n
Us
t
i
n
U
s
t
i
n
U
s
t
i
n
Us
t
i
n
U
t
S
R
h
t
d
i
W
e
s
l
u
P
t
e
s
e
Rh
g
i
H
o
t
w
o
l
m
o
r
f
R
M0
4
10
0
20
8
2s
m
t
D
W
d
o
i
r
e
P
t
u
o
e
m
i
T
g
o
d
h
c
t
a
W
V
o
t
d
e
i
t
R
M
d
n
a
I
D
W
C
C ,
V
C
C
V
>
N
R
%
5
+
2
1
.
16
.
15
2
.
2s
t
R
M
h
t
d
i
W
e
s
l
u
P
R
M1
µs
t
D
M
y
a
l
e
D
T
E
S
E
R
o
t
R
MV
C
C
V
0
.
5
=0
5
2s
n
t
P
W
h
t
d
i
W
e
s
l
u
P
I
D
W0
5s
n
Figure 4. Watchdog Timing Diagram
V
CC
t
RS
RESET
RESET
V
RST
V
RST
WDI
t
WD
t
RS
MR
t
MD
t
MR
t
WP
t
RS
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