UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 304

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

12.4.2 Input voltage and conversion results
A/D conversion result (stored in the 10-bit A/D conversion result register (ADCR)) is shown by the following
expression.
304
The relationship between the analog input voltage input to the analog input pins (ANI0 to ANI5) and the theoretical
or
where, INT( ):
Figure 12-12 shows the relationship between the analog input voltage and the A/D conversion result.
SAR = INT (
ADCR = SAR
(
ADCR
64
A/D conversion result
V
AV
ADCR: A/D conversion result register (ADCR) value
SAR:
CHAPTER 12 10-BIT SUCCESSIVE APPROXIMATION TYPE A/D CONVERTER ( PD78F041x only)
AIN
Figure 12-12. Relationship Between Analog Input Voltage and A/D Conversion Result
REF
:
0.5)
:
AV
Function which returns integer part of value in parentheses
Analog input voltage
AV
Successive approximation register
V
AIN
REF
64
REF
AV
1024
REF
pin voltage
1024 + 0.5)
V
AIN
1023
1022
1021
< (
SAR
3
2
1
0
ADCR
64
2048
1
User’s Manual U18698EJ1V0UD
+ 0.5)
1024
1
2048
3
AV
1024
1024
REF
2
2048
5
Input voltage/AV
1024
3
2043
2048
REF
1022
1024
2045
2048
1023
1024
2047
2048
ADCR
1
FFC0H
FF80H
FF40H
00C0H
0080H
0040H
0000H