R8C/13 Group 5. Electrical Characteristics
Rev.1.20 Jan 27, 2006 page 18 of 27
REJ03B0069-0120
Table 5.7
Reset Circuit Electrical Characteristics (When Using Hardware Reset 2
(1, 3)
)
S
y
m
b
o
l
Standard
T
y
p
.
U
n
i
t
Measuring condition
M
i
n
.M
a
x
.
P
a
r
a
m
e
t
e
r
V
p
o
r
2
P
o
w
e
r
-
o
n
r
e
s
e
t
v
a
l
i
d
v
o
l
t
a
g
e
VV
d
e
t
N
O
T
E
S
:
1
.
T
h
e
v
o
l
t
a
g
e
d
e
t
e
c
t
i
o
n
c
i
r
c
u
i
t
w
h
i
c
h
i
s
e
m
b
e
d
d
e
d
i
n
a
m
i
c
r
o
c
o
m
p
u
t
e
r
i
s
a
f
a
c
t
o
r
t
o
g
e
n
e
r
a
t
e
t
h
e
h
a
r
d
w
a
r
e
r
e
s
e
t
2
.
R
e
f
e
r
t
o
5
.
1
.
2
H
a
r
d
w
a
r
e
R
e
s
e
t
2
o
f
H
a
r
d
w
a
r
e
M
a
n
u
a
l
f
o
r
d
e
t
a
i
l
s
.
2
.
T
h
i
s
c
o
n
d
i
t
i
o
n
i
s
n
o
t
a
p
p
l
i
c
a
b
l
e
w
h
e
n
u
s
i
n
g
V
C
C
≥
1
.
0
V
.
3
.
W
h
e
n
t
u
r
n
i
n
g
p
o
w
e
r
o
n
a
f
t
e
r
t
h
e
e
x
t
e
r
n
a
l
p
o
w
e
r
h
a
s
b
e
e
n
h
e
l
d
b
e
l
o
w
t
h
e
v
a
l
i
d
v
o
l
t
a
g
e
(
V
p
o
r
1
)
f
o
r
g
r
e
a
t
e
r
t
h
a
n
1
0
s
e
c
o
n
d
s
,
r
e
f
e
r
t
o
T
a
b
l
e
5
.
8
R
e
s
e
t
C
i
r
c
u
i
t
E
l
e
c
t
r
i
c
a
l
C
h
a
r
a
c
t
e
r
i
s
t
i
c
s
(
W
h
e
n
N
o
t
U
s
i
n
g
H
a
r
d
w
a
r
e
R
e
s
e
t
2
)
.
4
.
t
w
(
p
o
r
2
)
i
s
t
i
m
e
t
o
h
o
l
d
t
h
e
e
x
t
e
r
n
a
l
p
o
w
e
r
b
e
l
o
w
e
f
f
e
c
t
i
v
e
v
o
l
t
a
g
e
(
V
p
o
r
2
)
.
S
u
p
p
l
y
v
o
l
t
a
g
e
r
i
s
i
n
g
t
i
m
e
w
h
e
n
p
o
w
e
r
-
o
n
r
e
s
e
t
i
s
c
a
n
c
e
l
e
d
(2
)
t
W
(
V
p
o
r
2
-
V
d
e
t
)
m
s
1
0
0
2
0
°
C
≤
T
o
p
r
<
8
5
°
C
2
0
°
C
≤
T
o
p
r
<
8
5
°
C
,
t
W
(
p
o
r
2
)
≥
0
s
(4
)
Figure 5.3 Reset Circuit Electrical Characteristics
Table 5.8
Reset Circuit Electrical Characteristics (When Not Using Hardware Reset 2)
V
por1
V
cc min
V
det
(3)
V
det
(3)
t
w(por1)
t
w(Vpor1–Vdet)
Sampling time
(1,2)
Internal reset signal
(“L” effective)
f
RING-S
1
X 32
f
RING-S
1
X 32
V
por2
NOTES:
1. Hold the voltage of the microcomputer operation voltage range (Vccmin or above) within sampling time.
2. A sampling clock is selectable. Refer to “5.4 Voltage Detection Circuit” of Hardware manual for details.
3. V
det
shows the voltage detection level of the voltage detection circuit. Refer to “5.4 Voltage Detection Circuit” of
Hardware manual for details.
t
w(por2)
t
w(Vpor2 –Vdet)
Table 5.6
Voltage Detection Circuit Electrical Characteristics
Symbol
Standard
Typ.
Unit
Measuring condition
Min. Max.
Parameter
Vdet
Voltage detection level
V3.8
4.3
NOTES:
1. The measuring condition is Vcc=AVcc=2.7V to 5.5V and Topr=-40°C to 85°C.
2. This shows the time until the voltage detection interrupt request is generated since the voltage passes Vdet.
3. This shows the required time until the voltage detection circuit operates when setting to "1" again after setting the VC27 bit in the VCR2
register to “0”.
Voltage detection interrupt request generating time
(
2)
40
nA
Voltage detection circuit self consumption current
Waiting time until voltage detection circuit operation starts
(
3)
td(E-A)
VC27=1, VCC=5.0V
3.3
20
600
µs
µs
Vccmin
Microcomputer operation voltage minimum value
2.7
V
Symbol
S
t
a
n
d
a
r
d
T
y
p
.
U
n
i
t
M
e
a
s
u
r
i
n
g
c
o
n
d
i
t
i
o
n
Min. M
a
x
.
Parameter
0
.
1
N
O
T
E
S
:
1
.
W
h
e
n
n
o
t
u
s
i
n
g
h
a
r
d
w
a
r
e
r
e
s
e
t
2
,
u
s
e
w
i
t
h
V
c
c
≥
2
.
7
V
.
2
.
t
w
(
p
o
r
1
)
i
s
t
i
m
e
t
o
h
o
l
d
t
h
e
e
x
t
e
r
n
a
l
p
o
w
e
r
b
e
l
o
w
e
f
f
e
c
t
i
v
e
v
o
l
t
a
g
e
(
V
p
o
r
1
)
.
100
1
tW(Vpor1-
Vdet)
S
u
p
p
l
y
v
o
l
t
a
g
e
r
i
s
i
n
g
t
i
m
e
w
h
e
n
p
o
w
e
r
-
o
n
r
e
s
e
t
i
s
c
a
n
c
e
l
e
d
0
.
5
tW(Vpor1-
Vdet)
Supply voltage rising time when power-on reset is canceled
tW(Vpor1-
Vdet)
Supply voltage rising time when power-on reset is canceled
V
V
p
o
r
1
P
o
w
e
r
-
o
n
r
e
s
e
t
v
a
l
i
d
v
o
l
t
a
g
e
ms
ms
ms
tW(Vpor1-
Vdet)
Supply voltage rising time when power-on reset is canceled 100
ms
0°C
≤
Topr
≤
85°C, tW(por1)
≥
10s
(2)
2
0
°
C
≤
T
o
p
r
<
0
°
C
,
tW(
p
o
r
1
)
≥
1
0
s
(2
)
0°C
≤
Topr
≤
85°C, tW(por1)
≥
1s
(2)
2
0
°
C
≤
T
o
p
r
<
8
5
°
C
20°C
≤
Topr < 0°C, tW(por1)
≥
30s
(2)
