UPD78F9212CS-CAB-A Renesas Electronics America, UPD78F9212CS-CAB-A Datasheet - Page 170

• Manufacturer Part Number: UPD78F9212CS-CAB-A
• Description: MCU 8BIT 4KB FLASH 16PIN
• Manufacturer: Renesas Electronics America
• Series: 78K0S/Kx1+r

Specifications of UPD78F9212CS-CAB-A

• Core Processor: 78K0S
• Core Size: 8-Bit
• Speed: 10MHz
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K 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: -
• Connectivity: -

9.4.2
A/D conversion result (stored in the 10-bit A/D conversion result register (ADCR)) is shown by the following
expression.
168
The relationship between the analog input voltage input to the analog input pins (ANI0 to ANI3) and the theoretical
or
where, INT( ):
Figure 9-11 shows the relationship between the analog input voltage and the A/D conversion result.
ADCR = INT (
(ADCR
Input voltage and conversion results
A/D conversion result
V
V
ADCR: 10-bit A/D conversion result register (ADCR) value
AIN
DD
Figure 9-11. Relationship Between Analog Input Voltage and A/D Conversion Result
:
:
0.5)
Function which returns integer part of value in parentheses
Analog input voltage
V
DD
V
V
1024
V
AIN
DD
pin voltage
DD
1024 + 0.5)
V
AIN
CHAPTER 9 A/D CONVERTER ( PD78F921x ONLY)
< (ADCR + 0.5)
1023
1022
1021
SAR
3
2
1
0
2048
1
User’s Manual U16994EJ6V0UD
1024
1
2048
1024
3
V
DD
1024
2
2048
5
Input voltage/V
1024
3
2043
2048
DD
1022
1024
2045
2048
1023
1024
2047
2048
ADCR
1
03FFH
03FEH
03FDH
0003H
0002H
0001H
0000H