UPD78F9221CS-CAC-A Renesas Electronics America, UPD78F9221CS-CAC-A Datasheet - Page 165

• Manufacturer Part Number: UPD78F9221CS-CAC-A
• Description: MCU 8BIT 2KB FLASH 20PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9221CS-CAC-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 15
• Program Memory Size: 2KB (2K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Notes 1.
Caution The above sampling time and conversion time do not include the clock frequency error. Select the
Remarks 1. f
AV
AV
AV
AV
Reference
Range
REF
REF
REF
REF
Voltage
2.
3.
4.
4.5 V
4.0 V
2.85 V
2.7 V
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
Set the sampling time as follows.
Set the A/D conversion time as follows.
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
The sampling time is 11.0 s or more and the A/D conversion time is 14.0 s or more and 100 s or
less.
Set FR2, FR1, and FR0 = 0, 1, 1 or 1, 1, 1.
AV
AV
AV
AV
AV
AV
AV
AV
: Oscillation frequency of clock to peripheral hardware
12/f
24/f
96/f
48/f
48/f
24/f
176/f
88/f
Sampling
REF
REF
REF
REF
REF
REF
REF
REF
Time
XP
XP
XP
XP
XP
XP
XP
XP
Note 2
4.5 V:
4.0 V:
2.85 V: 3.0 s or more
2.7 V:
4.5 V:
4.0 V:
2.85 V: 6.0 s or more and less than 100 s
2.7 V:
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 s or more
2.4 s or more
11.0 s or more
3.0 s or more and less than 100 s
4.8 s or more and less than 100 s
14.0 s or more and less than 100 s
XP
XP
XP
XP
XP
REF
XP
XP
XP
Note 3
2.7 V, f
1.5 s
3.0 s
12.0 s
6.0 s
6.0 s
3.0 s
22.0 s
11.0 s
Sampling
CHAPTER 10 A/D CONVERTER
Time
XP
User’s Manual U16898EJ6V0UD
= 8 MHz
Note 2
f
XP
= 8 MHz
Conversion
4.5 s
9.0 s
18.0 s
12.0 s
9.0 s
6.0 s
28.0 s
14.0 s
Time
Note 3
prohibited
Note 4
(2.4 s)
prohibited
Note 4
(8.8 s)
1.2 s
2.4 s
9.6 s
4.8 s
4.8 s
Setting
17.6 s
Setting
Sampling
Time
Note 2
f
XP
= 10 MHz
3.6 s
7.2 s
14.4 s
9.6 s
7.2 s
Setting
prohibited
Note 4
(4.8 s)
22.4 s
Setting
prohibited
Note 4
(11.2 s)
Conversion
Time
Note 3
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
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