UPD78F9234MC-5A4-A Renesas Electronics America, UPD78F9234MC-5A4-A Datasheet - Page 170

• Manufacturer Part Number: UPD78F9234MC-5A4-A
• Description: MCU 8BIT 8KB FLASH 30PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9234MC-5A4-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 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: -

(1) A/D converter mode register (ADM)
168
Address: FF80H
Symbol
ADM
This register sets the conversion time for analog input to be A/D converted, and starts/stops conversion.
ADM can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears this register to 00H.
Remarks 1. f
Note
ADCS
ADCS
ADCE
1
0
FR2
<7>
Note 1
Note 1
0
0
1
1
1
0
0
1
0
1
1.
After reset: 00H
2. The conversion time refers to the total of the sampling time and the time from successively
Even when the ADCE = 0 (comparator operation stopped), the A/D conversion operation starts if
the ADCS is set to 1. However, the first conversion data is out of the guaranteed-value range, so
ignore it.
comparing with the sampling value until the conversion result is output.
XP
Stops conversion operation
Starts conversion operation
Stops operation of comparator
Enables operation of comparator
: Oscillation frequency of clock to peripheral hardware
Figure 10-3. Format of A/D Converter Mode Register (ADM)
FR1
0
0
1
0
1
0
1
1
6
0
R/W
FR0
FR2
0
0
0
1
0
1
1
1
5
CHAPTER 10 A/D CONVERTER
User’s Manual U17446EJ5V0UD
Reference
Range
AV
4.5 V
AV
4.0 V
AV
2.85 V
AV
2.7 V
Voltage
REF
REF
REF
REF
FR1
A/D conversion operation control
Comparator operation control
Note 2
4
Sampling
12/f
24/f
96/f
48/f
48/f
24/f
176/f
88/f
Time
XP
XP
XP
XP
XP
XP
XP
XP
Note 3
FR0
3
Conversion
36/f
72/f
144/f
96/f
72/f
48/f
224/f
112/f
Time
XP
XP
XP
XP
XP
Note 4
XP
XP
XP
Sampling
Time
1.5 s
3.0 s
12.0 s
6.0 s
6.0 s
3.0 s
22.0 s
11.0 s
Note 6
2
0
f
XP
Note 3
= 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 4
1
0
Sampling
1.2 s
2.4 s
9.6 s
4.8 s
4.8 s
Setting
prohibited
Note 5
(2.4 s)
17.6 s
Setting
prohibited
Note 5
(8.8 s)
Time
f
XP
Note 3
= 10 MHz
ADCE
Conversion
3.6 s
7.2 s
14.4 s
9.6 s
7.2 s
Setting
prohibited
Note 5
(4.8 s)
22.4 s
Setting
prohibited
Note 5
(11.2 s)
<0>
Time
Note 4