µ
PD75512
52
(3)
A/D Converter (T
a
= -10 to +70
°
C, V
DD
= 3.5 to 6.0 V, AV
SS
= V
SS
= 0 V)
Parameter
Symbol
Conditions
MIN.
TYP.
MAX.
Unit
Resolution
8
8
8
bit
Absolute Accuracy*
1
2.5 V
≤
AV
REF
≤
V
DD
*
2
±
1.5
LSB
Conversion Time*
3
t
CONV
168/f
X
µ
s
Sampling Time*
4
t
SAMP
44/f
X
µ
s
Analog Input Voltage
V
IAN
AV
SS
AV
REF
V
Analog Input Impedance
R
AN
1000
M
Ω
AV
REF
Current
I
REF
1.0
2.0
mA
*1: Absolute accuracy excluding quantization error (
±
1
–
2
LSB)
2: Set ADM1 as follows, in respect to the reference voltage of the AD converter (AV
REF
).
ADM1 can be set to either 0 or 1 when 0.6V
DD
≤
AV
REF
≤
0.65V
DD
3: Time since execution of conversion start instruction until EOC = 1 (40.1
µ
s: f
X
= 4.19 MHz)
4: Time since execution of conversion start instruction until end of sampling (10.5
µ
s: f
X
= 4.19 MHz)
2.5 V
0.6 V
DD
0.65 V
DD
V
DD
(3.5 to 6.0 V)
ADM1=0
ADM1=1
AV
REF
Содержание mPD75512
Страница 66: ...µPD75512 66 APPENDIX B RELATED DOCUMENTS ...