52
38C1 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
A-D Converter Characteristics
Table 17 A-D converter recommended operating condition
(Vcc = 2.0 to 5.5 V (One Time PROM version: 2.2 to 5.5 V), Ta = –20 to 85
°
C, unless otherwise noted)
Power source voltage
“H” input voltage
ADKEY
0
–ADKEY
3
“L” input voltage
ADKEY
0
–ADKEY
3
AD converter control clock
(low-speed mode and ring
oscillator mode excluded)
Unit
V
V
V
V
MHz
MHz
MHz
Limits
Typ.
5.0
5.0
Parameter
Min.
2.0
2.2
0.9V
CC
0
Max.
5.5
5.5
V
CC
0.7V
CC
–0.5
20
V
CC
–38
20
V
CC
–26
3
40
V
CC
–82
3
10
V
CC
–19
8.0
Symbol
Mask ROM version
One Time PROM version
Mask ROM version
V
CC
≤
2.2 V
2.2 < V
CC
≤
2.5 V
One Time PROM version
V
CC
≤
2.5 V
2.5 < V
CC
≤
2.7 V
2.5 < V
CC
≤
5.5 V
2.7 < V
CC
≤
5.5 V
Mask ROM version
One Time PROM version
Conditions
V
DD
V
IH
V
IL
f(X
IN
)
Table 18 A-D converter characteristics
(Vcc = 2.0 to 5.5 V (One Time PROM version: 2.2 to 5.5 V), Ta = –20 to 85
°
C, unless otherwise noted)
Resolution
Linearity error
Differential non-linearity error
Zero transition voltage
Full-scale transition voltage
Absolute accuracy
(quantification error excluded)
Conversion time (
Note
)
Analog input current
Unit
BIT
LSB
LSB
mV
mV
mV
mV
LSB
LSB
LSB
LSB
tc(
φ
AD)
μ
A
Limits
Typ.
Parameter
Min.
0
0
5070
2535
106
20
10
5100
2550
Max.
8
±
1
±
0.9
50
25
5120
2560
±
2
±
2
±
5
±
3
109
±
5
Symbol
Ta = 25
°
C, 2.5
≤
V
CC
≤
5.5 V
Ta = 25
°
C, 2.5
≤
V
CC
≤
5.5 V
V
CC
= 5.12 V, Ta = 25
°
C
V
CC
= 2.56 V, Ta = 25
°
C
V
CC
= 5.12 V, Ta = 25
°
C
V
CC
= 2.56 V, Ta = 25
°
C
2.2
<
V
CC
≤
5.5 V (2.7
<
V
CC
≤
5.5 V for One Time PROM version),
f(X
IN
)
≤
8.0 MHz, or low-speed or ring oscillator mode
2.2
<
V
CC
≤
2.5 V (2.5
<
V
CC
≤
2.7 V for One Time PROM version),
f(X
IN
)
≤
2.0 MHz, or low-speed or ring oscillator mode
2.2
≤
V
CC
<
2.3 V for One Time PROM version
Low-speed or ring oscillator mode excluded
Condition except above
Test conditions
—
LIN
DIF
V0T
VFST
ABS
T
conv
I
IA
Note:
The operation clock is X
IN
in the middle- or high-speed mode, or the ring oscillator in the other modes.
When the A-D conversion is executed in the middle- or high-speed mode, set f(X
IN
)
≥
500 kHz.
tc(
φ
AD): One cycle of control clock for A-D converter. X
IN
input is used in the middel- or high-speed mode, and ring oscillator is used in the low- or ring
oscillator mode for the control clock.