UPD78F0034BGC-8BS-A Renesas Electronics America, UPD78F0034BGC-8BS-A Datasheet - Page 289

• Manufacturer Part Number: UPD78F0034BGC-8BS-A
• Description: MCU 8-Bit 78K0 CISC 32KB Flash 2.5V/3.3V/5V 64-Pin LQFP
• Manufacturer: Renesas Electronics America

Specifications of UPD78F0034BGC-8BS-A

• Package: 64LQFP
• Family Name: 78K0
• Maximum Speed: 12 MHz
• Ram Size: 1 KB
• Program Memory Size: 32 KB
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 51
• Interface Type: 3-Wire/UART
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 3

14.4.2 Input voltage and conversion results
A/D conversion result (stored in A/D conversion result register 0 (ADCR0)) is shown by the following expression.
The relationship between the analog input voltage input to the analog input pins (ANI0 to ANI7) and the theoretical
or
where, INT( ):
Figure 14-6 shows the relationship between the analog input voltage and the A/D conversion result.
ADCR0 = INT (
(ADCR0 – 0.5)
Figure 14-6. Relationship Between Analog Input Voltage and A/D Conversion Result
V
AV
ADCR0: A/D conversion result register 0 (ADCR0) value
A/D conversion result
IN
:
REF
CHAPTER 14 10-BIT A/D CONVERTER ( PD780034A, 780034AY SUBSERIES)
:
Function which returns integer part of value in parentheses
Analog input voltage
AV
AV
V
(ADCR0)
AV
REF
IN
REF
1024
REF
pin voltage
1024 + 0.5)
1023
1022
1021
V
3
2
1
IN
< (ADCR0 + 0.5)
2
2
2
2
2
2
0
6
6
6
6
6
6
2048
User’s Manual U14046EJ5V0UD
1
1024
1
2048
3
1024
AV
1024
2
REF
2048
5
Input voltage/AV
1024
3
2043
2048
REF
1022
1024
2045
2048
1023
1024
2047
2048
1
287