upd78f9211grt2-jjg-a ETC-unknow, upd78f9211grt2-jjg-a Datasheet - Page 152

• Manufacturer Part Number: upd78f9211grt2-jjg-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: ETC-unknow

152
Address: FF80H
Symbol
ADM
Remarks 1. f
Notes 1. Even when the ADCE = 0 (comparator operation stopped), the A/D conversion operation starts if
FR2
ADCS
ADCS
ADCE
0
1
1
1
0
0
1
0
1
0
<7>
Note 1
Note 1
0
1
2. Be sure to set the FR2, FR1, and FR0, in accordance with the reference voltage so that Notes 2
After reset: 00H
2. The conversion time refers to the total of the sampling time and the time from successively
the ADCS is set to 1. However, the data of the first conversion is out of the guaranteed-value
range, so ignore it.
and 3 below are satisfied.
Example
FR1
comparing with the sampling value until the conversion result is output.
0
0
1
0
1
0
1
1
Stops conversion operation
Starts conversion operation
Stops operation of comparator
Enables operation of comparator
XP
: Oscillation frequency of clock to peripheral hardware
Figure 9-3. Format of A/D Converter Mode Register (ADM)
6
0
FR0
When AV
• The sampling time is 11.0
• Set FR2, FR1, and FR0 = 0, 1, 1 or 1, 1, 1.
0
0
0
1
0
1
1
1
more and 100
R/W
Reference
V
4.5 V
V
4.0 V
V
2.85 V
V
2.7 V
Range
Voltage
DD
DD
DD
DD
FR2
REF
5
≥
≥
≥
≥
CHAPTER 9 A/D CONVERTER
≥ 2.7 V, f
Note 2
User’s Manual U16994EJ3V0UD
µ
s or less.
12/f
24/f
96/f
48/f
48/f
24/f
176/f
88/f
Sampling
Time
XP
XP
XP
XP
XP
XP
XP
XP
FR1
XP
A/D conversion operation control
Comparator operation control
4
Note 3
= 8 MHz
Conversion
µ
36/f
72/f
144/f
96/f
72/f
48/f
224/f
112/f
Time
s or more and the A/D conversion time is 14.0
XP
XP
XP
XP
XP
XP
XP
XP
Note 4
FR0
3
1.5
3.0
12.0
6.0
6.0
3.0
22.0
11.0
Sampling
Time
µ
µ
µ
µ
µ
s
s
µ
s
s
s
µ
µ
f
Note 3
s
s
s
XP
= 8 MHz
Note 5
2
0
Conversion
4.5
9.0
18.0
12.0
9.0
6.0
28.0
14.0
Time
µ
µ
µ
µ
s
s
µ
µ
s
s
µ
µ
Note 4
s
s
s
s
1.2
2.4
9.6
4.8
4.8
Setting
prohibited
(2.4
17.6
Setting
prohibited
(8.8
Sampling
1
0
Time
µ
µ
µ
µ
µ
µ
µ
s
s
s
s
s
µ
f
XP
s)
s)
Note 3
s
= 10 MHz
Conversion
3.6
7.2
14.4
9.6
7.2
Setting
prohibited
(4.8
22.4
Setting
prohibited
(11.2
ADCE
Time
<0>
µ
µ
µ
µ
µ
s
s
µ
s
s
µ
µ
s)
Note 4
µ
s
s
s)
s or