UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 317

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

FR2
A/D Converter Mode Register (ADM)
FR2
A/D Converter Mode Register (ADM)
0
0
0
0
1
1
0
0
0
0
1
1
Note This can be set only when 4.0 V ≤ AV
Cautions 1. Set the conversion times with the following conditions.
Remark f
FR1
FR1
0
0
1
1
0
0
0
0
1
1
0
0
Other than above
Other than above
2. When rewriting FR2 to FR0, LV1, and LV0 to other than the same data, stop A/D conversion
3. Change LV1 and LV0 from the default value, when 2.3 V ≤ AV
4. The above conversion time does not include clock frequency errors. Select conversion time,
PRS
FR0
FR0
0
1
0
1
0
1
: Peripheral hardware clock frequency
0
1
0
1
0
1
once (ADCS = 0) beforehand.
taking clock frequency errors into consideration.
• 4.0 V ≤ AV
• 2.7 V ≤ AV
• 2.3 V ≤ AV
LV1
0
0
0
0
0
0
LV1
0
0
0
0
0
0
LV0
LV0
REF
REF
REF
1
1
1
1
1
1
0
0
0
0
0
0
≤ 5.5 V: f
< 4.0 V: f
< 2.7 V: f
Table 13-2. A/D Conversion Time Selection
264/f
176/f
132/f
88/f
66/f
44/f
Setting prohibited
480/f
320/f
240/f
160/f
120/f
80/f
Setting prohibited
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
CHAPTER 13 A/D CONVERTER
AD
AD
AD
User’s Manual U17260EJ6V0UD
(1) 2.7 V ≤ AV
(2) 2.3 V ≤ AV
= 0.6 to 3.6 MHz
= 0.6 to 1.8 MHz
= 0.6 to 1.48 MHz
REF
≤ 5.5 V.
Setting prohibited
33.0
22.0
f
PRS
Conversion Time Selection
Conversion Time Selection
µ
µ
= 2 MHz
Setting prohibited
60.0
40.0
s
s
REF
REF
f
µ
µ
PRS
s
s
≤ 5.5 V
< 2.7 V
= 2 MHz
26.4
17.6
13.2
8.8
6.6
Setting prohibited
f
PRS
µ
µ
= 10 MHz
µ
µ
µ
s
s
Note
Note
s
s
s
Setting prohibited
64.0
48.0
32.0
Setting prohibited
Setting prohibited
REF
f
µ
µ
µ
PRS
f
13.2
8.8
6.6
Setting prohibited
PRS
s
s
s
< 2.7 V.
= 5 MHz
= 20 MHz
µ
µ
µ
s
s
Note
Note
s
Note
Note
f
f
f
f
f
f
f
f
f
f
f
f
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
PRS
Conversion Clock
Conversion Clock
/12
/8
/6
/4
/3
/2
/12
/8
/6
/4
/3
/2
(f
(f
AD
AD
)
)
317