UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 160

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

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Notes 1.
Caution The above sampling time and conversion time do not include the clock frequency error. Select the
Remarks 1. f
160
AV
AV
AV
AV
Range
Reference
REF
REF
REF
REF
Voltage
≥ 4.5 V
≥ 4.0 V
≥ 2.85 V
≥ 2.7 V
2.
3.
4.
Note 1
sampling time and conversion time such that Notes 2 and 3 above are satisfied, while taking the
clock frequency error into consideration (an error margin maximum of ±5% when using the high-
speed internal oscillator).
2. The conversion time refers to the total of the sampling time and the time from successively comparing
Be sure to set the FR2, FR1, and FR0, in accordance with the reference voltage so that Notes 2 and 3
below are satisfied.
Example When AV
• The sampling time is 11.0
• Set FR2, FR1, and FR0 = 0, 1, 1 or 1, 1, 1.
Set the sampling time as follows.
• AV
• AV
• AV
• AV
Set the A/D conversion time as follows.
• AV
• AV
• AV
• AV
Setting is prohibited because the values do not satisfy the condition of Notes 2 or 3.
with the sampling value until the conversion result is output.
XP
less.
: Oscillation frequency of clock to peripheral hardware
12/f
24/f
96/f
48/f
48/f
24/f
176/f
88/f
Sampling
Time
REF
REF
REF
REF
REF
REF
REF
REF
XP
XP
XP
XP
XP
XP
XP
≥ 4.5 V:
≥ 4.0 V:
≥ 2.85 V: 3.0
≥ 2.7 V:
≥ 4.5 V:
≥ 4.0 V:
≥ 2.85 V: 6.0
≥ 2.7 V:
XP
Note 2
Conversion
36/f
72/f
144/f
96/f
72/f
48/f
224/f
112/f
Time
Table 10-1. Sampling Time and A/D Conversion Time
1.0
2.4
11.0
3.0
4.8
14.0
XP
XP
XP
XP
XP
REF
XP
XP
XP
Note 3
µ
µ
µ
µ
µ
µ
≥ 2.7 V, f
s or more
s or more
s or more
µ
s or more and less than 100
s or more and less than 100
s or more and less than 100
µ
s or more
s or more and less than 100
µ
1.5
3.0
12.0
6.0
6.0
3.0
22.0
11.0
Sampling
Time
s or more and the A/D conversion time is 14.0
CHAPTER 10 A/D CONVERTER
XP
µ
µ
µ
µ
µ
User’s Manual U16898EJ5V0UD
µ
µ
µ
s
s
s
s
s
= 8 MHz
Note 2
s
s
s
f
XP
= 8 MHz
Conversion
4.5
9.0
18.0
12.0
9.0
6.0
28.0
14.0
Time
µ
µ
µ
µ
µ
µ
µ
µ
s
s
s
s
Note 3
s
s
s
s
µ
µ
µ
s
s
s
µ
s
(2.4
1.2
2.4
9.6
4.8
4.8
Setting
prohibited
Note 4
17.6
Setting
prohibited
Note 4
(8.8
Sampling
Time
µ
µ
µ
µ
µ
µ
µ
s
s
s
s
s
µ
s)
s)
Note 2
s
f
XP
= 10 MHz
3.6
7.2
14.4
9.6
7.2
Setting
prohibited
Note 4
(4.8
22.4
Setting
prohibited
Note 4
(11.2
Conversion
Time
µ
µ
µ
µ
µ
s
s
µ
s
s
µ
s)
µ
Note 3
s
s
s)
µ
s or more and 100
FR2
0
1
1
1
0
0
1
0
FR1
0
0
1
0
1
0
1
1
FR0
0
0
0
1
0
1
1
1
µ
s or