CHAPTER 9 A/D CONVERTER
User’s Manual U18172EJ2V0UD
153
Figure 9-3. Format of A/D Converter Mode Register (ADM)
Address: FF80H After reset: 00H R/W
Symbol
<7>
6 5 4 3 2 1
<0>
ADM
ADCS 0 FR2 FR1 FR0 0
0 ADCE
ADCS
A/D conversion operation control
0 Stops
conversion
operation
1
Note 1
Starts
conversion
operation
f
XP
= 8 MHz
f
XP
= 10 MHz
FR2 FR1 FR0
Reference
Voltage
Range
Note 2
Sampling
Time
Note 3
Conversion
Time
Note 4
Sampling
Time
Note 3
Conversion
Time
Note 4
Sampling
Time
Note 3
Conversion
Time
Note 4
0 0 0
V
DD
≥
4.5 V
12/f
XP
36/f
XP
1.5
µ
s 4.5
µ
s 1.2
µ
s 3.6
µ
s
1 0 0
V
DD
≥
4.0 V
24/f
XP
72/f
XP
3.0
µ
s 9.0
µ
s 2.4
µ
s 7.2
µ
s
1 1 0
96/f
XP
144/f
XP
12.0
µ
s 18.0
µ
s 9.6
µ
s 14.4
µ
s
1 0 1
48/f
XP
96/f
XP
6.0
µ
s 12.0
µ
s 4.8
µ
s 9.6
µ
s
0 1 0
48/f
XP
72/f
XP
6.0
µ
s 9.0
µ
s 4.8
µ
s 7.2
µ
s
0 0 1
V
DD
≥
2.85 V
24/f
XP
48/f
XP
3.0
µ
s 6.0
µ
s
Setting
prohibited
Note 5
(2.4
µ
s)
Setting
prohibited
Note 5
(4.8
µ
s)
1 1 1
176/f
XP
224/f
XP
22.0
µ
s 28.0
µ
s 17.6
µ
s
22.4
µ
s
0 1 1
V
DD
≥
2.7 V
88/f
XP
112/f
XP
11.0
µ
s 14.0
µ
s
Setting
prohibited
Note 5
(8.8
µ
s)
Setting
prohibited
Note 5
(11.2
µ
s)
ADCE
Comparator operation control
Note 6
0
Note 1
Stops operation of comparator
1
Enables operation of comparator
Remarks 1.
f
XP
: Oscillation frequency of clock to peripheral hardware
2.
The conversion time refers to the total of the sampling time and the time from successively
comparing with the sampling value until the conversion result is output.
Notes 1.
Even when the ADCE = 0 (comparator operation stopped), the A/D conversion op.1561(lue )8(lue0.0032 Two0 0 6 1791c 0. 9 0 0i44.16 0.96 -0.96 r0 60i44.16 0.96 -0.96 r0 60i[(op.1561(lue )0 1 Tf030.0032 Tw52al haarator op)-6(er)-9(ation st)]TJ22.9467 0 Td[(opp)-6(ed),)- ref[9467 0EDn Td[(op.1561(lue )8(lue0.0032 Two0 0 6 1796 1791c 0. )1( the)-6( Ar96 renA/D conversion )]TJo69f[9467 0EDn Td[(op.1561(lue )8(lue0.0032 Two0ihsion )]TJo69 ( t32 Tc(Notes hsion )]TJo69 ( t32 T8siowit)-11(h)-(opp)-6(ed),)- ref[961(lue TJo69 ( t 0 Td[(op.1561(l re.1561(l l)-6007 T5.08 244.9801 Tm5 )82.6 3133-(opp)-6(ed),)- ref[961(1[)]TJ/T1_w52al haarat7601 Tm(Notes 1. )Tj/T1 r7 Tw 9 Tm(Notes 11561(lue )8(lTm5 ). )Tj/T1 r7 Tw )-(op-6(er)-9(atiol2otes 11561(lue )8(lTm5 ). )Tj/T1 r7 Tw )-(op-6(er)-9(atiol2ir)-926j/T1 r7 T1 Tw9 0 0i44.16 0.96)2(ato1)1l1(c)]T ref g89ara3 w 9 Tmvj0.003 63lTm5 ) Tw to1)1l1(c)]T[)]Tsioh Tmvj0.003 Tw )-(op-6(er)-9(atiol2otes 11561(lue )9(atiol2otes 11561(lue )onvers2t(atiol2otes1)-6( Ar96 c[7(atiol2otes 11561(lue )onvers5(n)2(56 0.96 -0.96 r33lTm5 ) Tw to16i(atiol2otes1)-6( 02 85.c 9 0rs5(n)2(56 C031\43 2 re0ari)-7 r op)-6(er661(luo]TJ-0.0011 803lTmC031\43 h2otes 11561(lue )8(lTm ) Twr0ari)w 10.0(3ess91 Tf-0.0016 Tc 0.0569 Tw 4.9467 0 Td[.55 63-(opp)-6(ed),)- ref[-6007 T5.07 r op)-6(eB)-6(te 6)5iowit)ersion 3N80.0011 803lTmu iowit)ersion 3N80.8a3 w 9 Tmvj0.03.0565 1-6(e3661(lu021 Tol2ot 21 0i44.16 0.96 -0.96 r0 60i44.16 0.96 -0.96 r0 60i[(op.1561(lue )0 1 Tf044.9801 T030.0032 0.0569 Tw044583r)- y( ADCE = 016007 T5f0302e162o6 1791c 06 299.7 377.04 -0.96 ref552.6 313.68 0.9 21 w 9 Tmo46)ers-6007 tef5)0 1021 w 9 Tmo46)ery 21 w 22.946Tc 0.0( th49.7 T030.0032 i)w 10.0(3ess91 TflTm ) Twr0[Tmo46)ery 21 w 22.946Tc 0.0( th46e t32 Tc(Notes hsion )]TJo69 ( t32 T8s030.0032 i)1.96cor op)-6(er)-9(ation st)]TJ29 ( t32 T8s03p.4 0 Td[(to030or op)-6(er)-9(ation st)]TJ29 ( t32 T8s03mr Twion st)parator96 rr op)-61o46)em ) ion s91/T1 rr op)-61o46)em ) i4030.0The con T8s030.0032 ieration st