R8C/12 Group 5. Electrical Characteristics
Rev.1.20 Jan 27, 2006 page 15 of 25
REJ03B0068-0120
Table 5.3 A/D Conversion Characteristics
S
t
a
n
d
a
r
d
M
i
n
.T
y
p
.M
a
x
.
– R
e
s
o
l
u
t
i
o
n
B
i
t
Vr
e
f
=
VC
C 1
0
S
y
m
b
o
lP
a
r
a
m
e
t
e
r Measuring condition U
n
i
t
LSB
±
3
R
L
A
D
D
E
R
tC
O
N
V
L
a
d
d
e
r
r
e
s
i
s
t
a
n
c
e
C
o
n
v
e
r
s
i
o
n
t
i
m
e
R
e
f
e
r
e
n
c
e
v
o
l
t
a
g
e
A
n
a
l
o
g
i
n
p
u
t
v
o
l
t
a
g
e
V
V
I
A
VR
E
F
0
VC
C
(
4
)
Vr
e
f
NOTES:
1. V
CC=AVCC=2.7 to 5.5V at Topr = -20 to 85 °C / -40 to 85 °C, unless otherwise specified.
2. If f
AD exceeds 10 MHz, divide the fAD and hold A/D operating clock frequency (ØAD) 10 MHz or below.
3. If the AVcc is less than 4.2V, divide the f
AD and hold A/D operating clock frequency (ØAD) fAD/2 or below.
4. Hold Vcc=Vref.
ø
A
D
=
1
0
M
H
z
,
V
r
e
f
=
V
c
c
=
5
.
0
V
VR
E
F=
VC
C
–
A
b
s
o
l
u
t
e
a
c
c
u
r
a
c
y
–
10 bit mode
8
b
i
t
m
o
d
e
øAD=10 MHz, Vref=Vcc=5.0V
±
2
L
S
B
1
0
b
i
t
m
o
d
e
8
b
i
t
m
o
d
e
ø
A
D
=
1
0
M
H
z
,
V
r
e
f
=
V
c
c
=
3
.
3
V
(3
)
±
5L
S
B
øAD=10 MHz, Vref=Vcc=3.3V
(3)
±
2L
S
B
1
0 40
kΩ
10 bit mode
8
b
i
t
m
o
d
e
øAD=10 MHz, Vref=Vcc=5.0V
øAD=10 MHz, Vref=Vcc=5.0V
3
.
3
2
.
8
µs
µs
V
A
/
D
o
p
e
r
a
t
i
n
g
c
l
o
c
k
f
r
e
q
u
e
n
c
y
(2
)
W
i
t
h
o
u
t
s
a
m
p
l
e
&
h
o
l
d
With sample & hold
0
.
2
5
10
MHz
1.0
10
MHz
Figure 5.1 Port P0 to P4 measurement circuit
P0
P1
P2
P3
P4
30pF
