55
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3827 Group
Table 18 A-D converter characteristics
(V
CC
= 2.2 to 5.5 V, V
SS
= 0 V, Ta = –20 to 85
°
C, 4 MHz
≤
f(X
IN
)
≤
8 MHz, in middle/high-speed mode unless otherwise noted)
Symbol
Parameter
Limits
Typ.
Min.
Unit
Max.
10
±
2.5
±
4.0
31
(Note)
Test conditions
–
Resolution
Absolute accuracy
(excluding quantization error)
V
CC
≥
V
REF
= 4 V
V
CC
≥
V
REF
= 2.7 V
30.5
Bits
LSB
LSB
35
150
0.5
Note:
When an internal trigger is used in middle-speed mode, it is 34
μ
s.
μ
s
f(X
IN
) = 4 MHz
V
REF
= 5 V
Conversion time
Ladder resistor
Reference power source input current
Analog port input current
–
t
CONV
R
LADDER
I
VREF
I
IA
k
μ
A
μ
A
Table 19 D-A converter characteristics
(V
CC
= 2.2 to 5.5 V, V
CC
= V
REF
, V
SS
= AV
SS
= 0 V, Ta = –20 to 85
°
C, in middle/high-speed mode unless otherwise noted)
Symbol
Parameter
Limits
Typ.
Min.
Unit
Max.
8
1.0
2.0
Test conditions
–
Resolution
V
CC
= V
REF
= 5 V
V
CC
= V
REF
= 2.7 V
1
Bits
%
%
μ
s
k
mA
3
2.5
Note:
Using one D-A converter, with the value in the D-A conversion register of the other D-A converter being “00
16
”, and excluding currents flowing through
the A-D resistance ladder.
(Note)
Setting time
Output resistor
Reference power source input current
–
t
su
R
O
I
VREF
4
6.0
50
Absolute accuracy
200
5.0